RF Transceiver Module Distributor in China
- High performance, highly flexible, and single-chip RF Transmitter.
- Low power, high performance and standalone RF receivers.
- Applicable on security systems, remote gate controls, remote sensing, etc.
- Long-range line-of-sight communication for up to 1200 m or 3200 m.
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Reputed RF Transceiver Module Supplier - Rantle East Electronic
RANTLE RF Transceiver Module is a high performance, highly flexible, and single-chip RF Transmitter. It is based on direct synthesis of the RF frequency. Also, the RF Transceiver is a low power, high performance and standalone RF receivers. Working with the built-in sleep timer, it consumes less power.
RANTLE RF Transceiver Module is a range of basic radio telemetry transmitter and receiver modules operating in the 433MHz ISM frequency band. Digital data can be communicated directly from a microcontroller serial or via a suitable codec. It is applicable on security systems, remote gate controls, remote sensing, data capture, garage door controller, and short-range communication for the internet o things.
RANTLE RF Transceiver Module has designed to improved power consumption, support for over-the-air firmware updates. It provides an upgrade path protocol. Also provides a long-range line-of-sight communication for up to 1200 m or 3200 m.
Additionally, RANTLE RF Transceiver Module is a highly integrated, low-cost 868MHz ISM-band transceiver module. It has built-in antenna diversity and support for frequency hopping and can be used to extend range and enhance performance.
RANTLE RF Transceiver Module are hot-swappable and protocol-independent. They typically operate at near-infrared wavelengths (color) of 850 nm, 1310 nm or 1550 nm. Principal applications include 10 Gigabit Ethernet, 10 Gbit/s FIBRE Channel, synchronous optical networking.
RANTLE is an independent RF Transceiver Module distributor for almost 15 years. We assure you high quality parts, competitive price, swift delivery, quality service, good reputation, and global sourcing network. We stock an extensive range of RF Transceiver Module and also offer a free component sourcing service for our customers.
Our Quality Control team is working hard to ensure the quality of all the parts we are selling. We provide 30 days warranty so you have nothing to worry about. Our inventory is maintained to the highest standards in our controlled environment warehousing facility. Feel free to contact us today.
RF Transceiver Module: The Ultimate FAQ Guide
Most likely, you would like to import or learn more about RF transceiver modules.
That’s why I have compiled all the necessary information you should know about RF transceiver such as uses, design, working principle, amplitude shift and characteristics, amongst others.
Keep reading if you want to be an expert in RF transceiver modules.
- What is an RF Transceiver Module?
- What are the RF Transmitter and Receiver?
- How does an RF Transceiver Module work?
- What System Employs the RF Transceiver Module?
- What is Half-duplex and Full-duplex in RF Transceiver Modules?
- What is the Construction of an RF Transceiver Module?
- What are the Components of an RF Transceiver Module?
- What are the Modulation Methods?
- Why is Modulation needed?
- How does Analog Modulation compare to Digital Modulation?
- What are some Modulation Techniques used in the RF Transceiver Module?
- What is meant by AM and FM?
- What Factors Influence the Communication of an RF Transceiver Module?
- What are some Characteristics Relating to an RF Transceiver Module?
- What are the Applications of an RF Transceiver Module?
- What are the Specifications of an RF Transceiver Module?
What is an RF Transceiver Module?
A radio frequency transceiver module is a compact electronic gadget consisting of both a transmitter and a receiver.
RF Transceiver module
The transmitter and receiver in the module are each connected to a microcontroller to help in data transfer.
The RF transceiver module is used in the transmission and reception of radio frequency signals. Such an application is in wireless communication systems.
The RF transceiver modules are used to convert information into a data form that can be conveyed over wireless means.
What are the RF Transmitter and Receiver?
RF Transmitter and receiver
· RF Transmitter
A radio frequency transmitter is a circuit formation that has the ability to disseminate a radio signal.
It can do this by first modulating the signal to data-carrying ability.
The RF transmitter incorporates the use of a microcontroller for data handling operations.
An RF transmitter will have independent characteristics as to its transmitter output power and harmonics.
· RF Receiver
An RF receiver demodulates that it receives. Receivers can be super-heterodyne or super-regenerative.
The crystal design of a super-heterodyne receiver allows higher levels of accuracy and stability over a wide temperature and voltage values.
This allows it to offer better performance than the super-generative receiver.
The super-generative receiver consumes less power utilizing multiple amplifiers for modulated data extraction from a signal carrier.
They are easily affected by temperature variations and voltage sources, resulting in a reduced performance level.
You find the RF transceiver module is enabled to carry information over distances at a defined data rate.
RF transceiver modules have a wide range of working voltages using limited amounts of power while in operation.
How does an RF Transceiver Module work?
You find an RF transceiver composed of radio transmitters and radio receivers in one compact system.
The radio transmitter is used as a signal source and the radio receiver as a signal destination.
RF transceiver modules transmit and receive signals as electromagnetic energy in a waveform.
The radio transmitter in a module generates signals at determinate frequencies via the oscillator, which produces a carrier wave.
This wave is then modulated to conform to digital or analog specification as desired then amplified.
Amplification allows for the signal to attain the desired frequencies of transmission and determines its transmission frequency power.
The wavelength of the signal is also determined before being conducted to the antenna for transmission.
You realize that the wavelength of a signal is directly related to its transmission distance.
A signal with a long wavelength can, therefore, travel further.
Additionally, this waveform allows it to overcome obstacles in its path.
The antenna is the first stop for signal reception.
Also, the antenna, exposed to the atmosphere, which is a medium of wave transfer, stimulates an alternating current signal.
This signal is transferred to a radio signal amplifier where it is softened to its original form.
Besides, this is because the transmitted signal was amplified before dissemination.
This process allows for easier demodulation and extraction of relevant information.
Many radio waves are captured by the antenna, but the desired information is contained in only a particular waveform.
The characteristics of the waves are based on frequencies.
A tuner is used to establish the desired communication.
The tuner is an inductor-capacitance combination that provides a frequency value for the desired communication.
This frequency is referred to as resonating frequency.
When the desired frequency is identified, other radio waves not coinciding with this frequency are blocked.
The wave sequence coinciding with this frequency is the one that is identified as bearing the relevant communication.
Upon demodulation, this communication is extracted from the radio signal via a detector.
Audio data is amplified before being outputted through a speaker.
What System Employs the RF Transceiver Module?
The RF transceiver module finds use mostly as an embedded device in communication systems to allow wireless communication.
This communication is mostly through radio frequency, which does not require a line of sight.
Such systems of communication include mobile phones, wireless telephones, and portable bidirectional radios.
The RF transceiver module finds other applications in remotely controlled automation systems and alarm systems.
What is Half-duplex and Full-duplex in RF Transceiver Modules?
A radio frequency transceiver can transmit signals while the receiver is dormant.
The transmitter and the receiver share an antenna.
It is, therefore, important for the functions of the two separate devices to be coordinated.
A switch is used for this purpose.
When a switch is used to separate the operation of transmitting signals and receiving them, it is a half-duplex operation.
This type of operation only allows one operation at a time.
You find you cannot receive a radio frequency signal while you are transmitting one.
Other RF transceiver modules allow for both the transmitter and receiver to operate simultaneously.
In this case, the communication system can receive radio frequency signals, while the signal transmission is being carried out.
Such an operation is referred to as full-duplex.
Full-duplex operation is enabled by the separation of operational frequencies for both the transmitter and the receiver.
In this case, the operation of the transmitter does not interfere with that of the receiver, and vice versa.
Here, the transmitter is made to operate at slightly different levels of frequency from the receiver.
This way, signals can be transmitted at the set transmitter signal and received at the set receiver signal. Many communication gadgets employ this method.
For example, communication networks employing the use of satellites use full-duplex transceiver modules.
The signal transmitted from the RF transceiver module is referred to as the uplink.
Also, the signal received from the satellite is the downlink.
What is the Construction of an RF Transceiver Module?
RF transceiver modules find use in different communication system circuits.
In these systems, the quantity of information to be transferred differs at different data rates.
Additionally, the distance over which the information is intended to be transferred is not the same.
Typically, you find the RF transceiver module with an electronic circuit for the transmitter and the receiver.
Additionally, you find an antenna that serves the dual purpose of receiving and transmitting signals.
Besides these, the RF transceiver module provides a communication interface via the processor.
What are the Components of an RF Transceiver Module?
The radio frequency transceiver module is composed of a transmitter and receiver rigged to convey and decode radio signals, respectively.
The components of an RF transceiver can be described for both transmitter and receiver architecture.
For the radio frequency transmitter, the following elements are interconnected, enabling the production of radio signals for data transfer.
Components of transceiver module
· Power Source
The RF transmitter needs a power source to drive its radio signal generation.
A power supply is essential for the transmitter circuit’s electrical energy.
The oscillator is responsible for the alternating current that is produced at the frequency of signal transmission.
Also, the alternating current takes a sine waveform otherwise known as a carrier wave.
The modulator serves to transform the carrier wave by enhancing its data-carrying capacity. Modulation can either be amplitude modulation or frequency modulation.
Amplitude modulation (AM) alters the wave carrier’s intensity while frequency modulation (FM) modifies its frequency.
The amplifier serves the purpose of increasing the strength/power of the signal.
To obtain a high power signal, you employ a powerful amplifier.
The antenna is typically a conductive wire of some length. It is used for signal conversion into radio waves.
Besides, the radio waves are then disseminated bound for their destination from the antenna.
For the radio receiver, the following interconnected components provide for the interpretation of collected waves.
You find that an RF transceiver utilizes a single antenna for both the transmission and reception of radio waves.
However, while it disseminates radio waves while in transmission mode, it collects the same working as a receiver.
When radio waves arrive at the antenna, they stimulate the occurrence of an alternating signal. Due to external conditions, the signal can be very weak or strong.
· A Radio Signal Amplifier
The amplifier in a receiver circuit increases the signal strength of the radio frequency received at the antenna.
This allows for easier processing and demodulation.
There is no frequency discrimination of the radio waves collected by the antenna.
This necessitates a method of identifying the radio signals of the desired frequency.
The tuner provides circuitry for the extraction of the relevant radio signal frequency.
The circuit for a tuner can be constructed to include an inductor and capacitor of the attached values.
This combination pair will provide a resonating response when the frequency corresponds to these values.
This is the resonating frequency.
The values for the resonant frequency can be changed by altering the values of the inductor or the capacitor.
This is called tuning.
Signals of values below or exceeding the resonating frequency are blocked.
A detector is used to extract the audio data from the demodulated wave. A diode is used to obtain the information for AM.
The diode rectifies the AC signal.
Normally, the resulting direct signal is directed to a circuit containing an amplifier for audio. FM signals require sophisticated circuitry.
· An Audio Amplifier
The role of this amplifier is to enhance the audio data retrieved.
The signal received from the detector is typically weak and can, if not amplified, will be inaudible.
As an amplifier, a circuit containing a transistor can be used.
The number of circuit components from both the transmitter and receiver can be altered to enhance the signals.
What are the Modulation Methods?
Modulation methods are the processes used in the transformation of data into electrical signals before they are transmitted.
You find the following existing modulation methods: analog modulation and digital modulation.
Analog modulation finds use in the broadcasting of short-wave frequencies and radios using AM and FM signals.
Digital modulation transmits signals in the form of binary values 1 and 0.
Why is Modulation needed?
You find modulation in radio frequency transceiver modules useful in the following ways:
1. Assignment of Frequency
Modulation is useful in the assignment of frequency to radio signals.
Frequency assignment is useful as it provides a pathway for two-way communication.
RF transceiver modules communicate through channels whose major basis of distinction is the frequency of operation.
To enable communication through a particular channel, the radio signals received or sent should conform to the respective frequency.
Modulation provides the modification of radio waves into signals that conform to the required frequency.
2. To Reduce Interference
There is an abundance of radio waves carrying communication throughout the atmosphere.
The antenna to an RF transceiver module does not discriminate what waves are received on the antenna.
To identify the relevant communication intended for the module, modulation of the radio waves has to be carried out.
The modulation will block out the irrelevant radio waves, only smoothing the required frequency signal.
Multiplexing allows the transmission of varied signals, whether analog or digital, as a single signal over a common media medium.
Multiplexing eliminates the need to use independent transmission channels for individual communications.
This saves a lot on infrastructural costs and space.
Multiplexing is enabled during modulation where signals are combined for transmission over a single medium.
When these signals are picked, to identify relevant communication, de-multiplexing is carried out.
This process is also done during signal modulation.
4. Limitations of Equipment
The limitation of equipment can be attributed to the signal bandwidth.
Signal bandwidth provides an RF transceiver module’s highest and lowest signal frequency achievable for a given strength.
To achieve larger bandwidths, you will incur more equipment costs.
To maximize a single bandwidth, numerous radio waves are carried.
Modulation intervenes in this limitation by synthesizing only required signals from a host of different waves.
5. Antenna Frequency Characteristics
The antenna picks up radio waves present in its atmospheric immediacy.
This way, there is no telling what communication is picked.
When these waves are captured, they induce an alternating current in the antenna.
Modulation converts this alternating current into identifiable radio frequency signals.
It then blocks out signals with frequencies that are undesired, allowing through the only the wanted communication.
6. Communication Medium Properties
Radio waves are transmitted over a medium such as cables and air.
With these, there are several factors that affect each transmission medium, which is foreign to the RF transceiver module.
Modulation filters out unwanted signals and amplifies the required signal to a clarity level.
It ensures no interference in the medium is carried over to the communication.
How does Analog Modulation compare to Digital Modulation?
You find the following advantages attached to employing digital modulation.
Digital systems have fairly inexpensive circuit components.
With digital modulation, data can be encrypted, protecting privacy.
Different data types, such as video and voice, can be merged and conveyed over a similar path.
Using code correction, errors can be corrected.
However, digital modulation requires more bandwidth alongside the problem of synchronizing data.
Analog modulation, on the other hand, provides for easier synchronization with a smaller use of bandwidth. It nonetheless has the following disadvantages.
Components in the analog modulation circuit are relatively expensive.
Data cannot be encrypted for analog modulation providing a risk of privacy encroachment.
There is no method of correcting an error in analog systems.
What are some Modulation Techniques used in the RF Transceiver Module?
Some common modulation techniques used in the RF transceiver module are:
· Amplitude-shift Keying (ASK)
This is a technique of amplitude modulation.
With this technique, data in its digital form is represented as a variant of a carrier wave’s amplitude.
A binary value of 1 is provided by the transmission of the sine wave.
The sine wave has to have a determined amplitude and frequency and with a defined time period given in seconds.
If not, a binary value of 0 is transmitted.
This modulation technique creates a binary pattern with determinate amplitudes that equally encode bits.
For each binary pattern is an amplitude symbol.
A demodulator identifies a signal’s amplitude and converts it to its symbol form of original data.
With amplitude-shift keying, the carrier wave’s frequency and phase remain unchanged.
It has linear property and susceptible to atmospheric constraints such as noise.
Using this technique is inexpensive, with a switch configuration as its simplest form.
· The On-off Keying (OOK)
This technique is an amplitude-shifty keying technique but its most basic form.
With this technique, digital data is identified by the carrier wave’s absence or presence.
In this case, for a binary value of 1, you have a wave presence.
An absence is presented by a binary 0.
The on-off keying is well established in Morse code transmission.
It, however, exhibits noise sensitivity sometimes when used with super-regenerative receivers.
· Frequency-shift Keying (FSK)
This modulation technique allows the dissemination of digital data via discrete changes in frequency for carrier waves.
When simplified to express the binary values of 1 and 0, it is called binary frequency-shift keying.
This technique finds use in transmissions of radio waves over low frequencies and in specialized communication applications.
What is meant by AM and FM?
AM vs FM
AM refers to amplitude modulation, while FM refers to frequency modulation.
Both are techniques used in the modification of signals for transmission.
In both instances, the difference arises from the way the data modifies the carrier wave.
In amplitude modulation, the carrier wave’s amplitude changes with the data contained in the signal.
For frequency modulation, the data signal influences the wave’s frequency.
A signal modulated by amplitude is capable of achieving long distances.
For frequency modulated signals, they are characterized by larger bandwidths.
This provides for a better quality of audio data transmissions.
You also find that amplitude modulated signals are more sensitive to noise levels than frequency modulated signals.
What Factors Influence the Communication of an RF Transceiver Module?
The following factors are important in determining your RF transceiver module’s communication capability.
i. Output Power
The output of an RF transceiver module is its transmitted signal at a given frequency. The transmission is ejected via the antenna, and it is measured in watts.
A large output power provides for a large transmission signal.
ii. Line of Sight
For communication to be effectively transmitted, the antenna of origin of the transmission should be in view of the recipient antenna.
This should be a straight line and is what is called the line of sight.
Radio frequencies are dispersed upon transmission.
This creates areas around the antennas that can be considered to be in the line of sight despite not being straight lines.
iii. Sensitivity of the Receiver
The sensitivity of the receiver describes the signal limit which a module’s receiver can demodulate.
When an RF module sends a signal, it is usually amplified.
The receiver needs to capture and demodulate the signal, which will be dependent on its sensitivity.
What are some Characteristics Relating to an RF Transceiver Module?
An RF transceiver module has the following characteristics related to its technical aspects.
The characteristics are distinguished for the transmitter part and the receiver part due to their functional dissimilarity.
For the RF Transceiver, the following features are identified.
· Gain and Flatness
The gain and flatness are parameters taken for the amplifier in a transmitter.
The gain of an amplifier is a measure that describes the signal variance between the output and input.
This measure assumes a constant impedance value for the system and input and output, respectively.
Flatness seeks to describe the variation of gain of an amplifier for the established frequency margin.
When flatness varies, there is bound to be a signal distortion of signals in the amplifier.
· Frequency Range
The RF transceiver modules frequency range describes the working frequencies for its signal transmission and reception.
It describes frequency values for which the transmitter can capture and modulate radio waves.
Similarly, it describes the output signals frequency values.
· Gain Adjustment
Gain adjustment is a feature that seeks to establish evenness between the voltage of the output source and the amplifier’s input circuit.
This feature is useful in the tuning of radio signals to provide clarity.
· Conversion Gain
The conversion gain of a radio frequency transceiver module is a performance indicator.
It is obtained by determining the ratio of the output power of the modulated signal and that of the input.
· Compression Point
The compression point is indicative of the instant where an amplifier’s gain is decreased while its input power is increased.
At this point, the output power increases in a non-linear way.
Additionally, at this point, there is a distortion of signals and harmonic presence.
· Frequency Stability
Frequency stability is provided for by the oscillator in a radio frequency transceiver.
It ensures that the frequency of the signal outputted is close enough to that which is desired. Besides, the frequency stability is quantified in hertz or parts per million.
Furthermore, frequency stability can be expressed over the desired frequency or below it.
When the transmitted signal is above the desired frequency, it is called the frequency drift.
When the frequency transmitted is below that of the desired frequency, it is frequency error.
· Spurious Emission & Harmonic Output
When a radio frequency transmitter produces and disseminates unintended frequencies.
It is known as a spurious emission. A harmonics output is a suitable case of spurious emission.
Harmonic outputs can be determined by the use of a radio spectrum analyzer.
You can also identify a harmonic output’s frequency by tuning the receiver to settle the harmonics.
Harmonic outputs could be precarious in instances where the frequency to which they settle is used for communication.
This could interfere with the communication on the said frequency.
· Noise Figure
The noise figure of an RF transceiver module is a result of interlinked components a signal goes through.
It is described in relation to the noise factor and provides a degradation description for the signal-to-noise ratio.
To determine the noise factor, you establish the ratio of the signal-to-input ratio of the input and output.
The output usually has a lower signal-to-ratio value, and as such, the noise factor will always be greater than one.
A lower noise figure is indicative of an RF transceiver’s better performance. The noise figure is stated in decibels.
· Image Response
Actually referred to as the image response rejection ratio, this is a ratio between the intermediate frequency and the image frequency.
The intermediate frequency and image frequency used in this expression are that which would be produced by the desired frequency.
This ratio is expressed in decibels and can be simply described as the ratio of the desired signal and the undesirable signal.
These signals are, however, pitted on the receiver output.
Adjacent channel interference
Interference from an adjacent signal is caused by an extremely strong signal being transmitted by the adjacent channel.
The strong signal could be indicative of poor control of frequency, incomplete filtering during modulation, or tuning frailties.
What are the Applications of an RF Transceiver Module?
You find the following application for the RF transceiver module.
This module is entrenched in wireless communication systems.
The RF transceiver modules are used to convert information into a data form that can be conveyed over wireless means.
Communication devices such as mobile phones and walkie-talkies utilize RF transceiver modules integrated into their systems.
The RF transceiver module is employed in the transmission of radio and television signals and also enabling communication via satellites.
Besides, the radio frequency transceiver module is also used in smart home systems.
In this case, RF transceiver modules are integrated into electrical circuits and house appliances.
You will find remote controlled or sensor-based lighting systems, and voice-controlled household appliances such as refrigerators and microwaves.
The use of RF transceiver modules in the home has made life easier, especially the unassisted elderly and handicapped.
New age robots also employ RF transceiver modules to help in aspects such as voice recognition.
Additionally, such robots with the RF transceiver modules are being applied for self-driving vehicles to avoid obstacles by bouncing signals.
You also find the RF transceiver module useful in modifying intermediate frequency (IF).
The intermediate frequency is a frequency type that is created through the combination of the carrier and oscillator signals.
This allows for the amplification of an incoming or outgoing signal.
What are the Specifications of an RF Transceiver Module?
The following are some of the specifications attached to an RF transceiver module.
- Transmission range when in open space pursuant to standard atmospheric conditions that are given in meters.
- Frequency of the RF receiver provided in hertz.
- RF receiver’s sensitivity to noise given in decibels.
- Modules’ receiver current supply provided in milliamperes.
- Intermediate frequency able to be captured by the radio receiver in the module in hertz.
- Maximum data rate achievable by the module in kilobits per second.
- Voltage requirements for both the receiver and the transmitter.
- Output power produced by the radio transmitter in the module expressed in decibels.
- Frequency range of the module’s radio transmitter, which is expressed in hertz.
As you can see, there are so many things you need to know about RF transceiver.
The best parts, this guide has outlined all the critical aspects.
However, if you have more questions or inquiries about RF transceivers, Rantle team is here to help.