Radiofrequency module is an electronic device used to transmit and receive radio signals between two devices.
- Wireless communication is accomplished through Radio Frequency (RF).
- Several carrier frequencies are commonly used in commercially-available RF modules they are 433.92 MHz, 315 MHz, 868 MHz, 915 MHz, and 2400 MHz.
- By increasing the transmitter power, a large communication distance will be achieved.
- The performance of the overall system may be improved by using matched antennas at each end of the communication link.
- RF Module consists of two parts
1. Transmitter section.
2. Receiver section.
- An RF transmitter module is capable of transmitting a radio wave and modulating that wave to carry data.
- Transmitter module connected with a microcontroller provides data to the module which can be transmitted.
- An RF receiver receives the modulated RF signal and demodulates it.
- There are two types of RF receiver module
- Superheterodyne module is generally imprecise as their frequency of operation varies considerably with temperature and power supply voltage.
- Super-regenerative module is usually low cost and low power design using a series of amplifiers to extract modulated data from a carrier wave.
- Robot remote control.
- Wireless data transmissions.
- Alarm systems.
- Digital home automation.
- Industrial data acquisition system.
- RF Module.
- PIC16f877a MicroController.
- Vcc: +5v.
- Data: To Microcontroller pin.
- Gnd: Gnd.
- Data1: To Microcontroller pin.
- Data2: To Microcontroller pin.
- Gnd: Gnd