ATA5761N-TGQY RF/IF and RFID

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Introduction of RF Receivers

RF receivers are an essential component of the communication system. Its architecture often consists of an antenna, radio frequency (RF) amplifier, mixer, local oscillator, filters and demultiplexer. The most common application of an RF receiver is to receive and amplify of an RF signal transmitted from the antenna, and then process the signal through the mixer and local oscillator to obtain a digital signal.

Application Field of ATA5761N-TGQY

ATA5761N-TGQY is a highly integrated, low power and high data rate RF receiver from NXP Semiconductors. It consists of an input amplifier, mixer, local oscillator, a high performance IF amplifier and an integrated demodulator. The receiver uses the latest standard ASK modulation scheme, which allows its operation in the HF (13.56MHz) or UHF (868MHz/915MHz) bands. It is ideal for high speed wireless applications such as active RFID, automotive keyless entry, access control, medical, alarm systems, industrial monitoring and control applications.

Working Principle of ATA5761N-TGQY

First of all, the receiver makes use of a signal amplifier. The amplified signal is then applied to a mixer together with the RF input signal in order to convert the RF signal to an intermediate frequency (IF) signal. This IF signal is next filtered and amplified in order to reduce noise and improve signal-to-noise ratio. Finally, the demodulator is used to demodulate the IF signal and extract the data from it. The ATA5761N-TGQY uses an integrated demodulator to distinguish the data from the modulation signal.

The demodulator is essentially a voltage-controlled switch. It is a single-channel receiver that can detect and process different modulation schemes, including AM, FM, SSB, and ASK modulation. As the input voltage changes, the switching speed of the demodulator changes, thus allowing it to detect the modulation signal and extract the data from it. The ATA5761N-TGQY’s demodulator also contains several digital signal processing functions, such as digital low-pass filter and automatic gain control (AGC), to improve the signal performance.

Overall, the manufacturers of ATA5761N-TGQY propose a high-quality RF receiver that offers very low power consumption and high data rate. It is the ideal choice for applications involving wireless data transmission up to 500 Kbps, such as RFID tags, access control, medical, alarm systems, active RFID, automotive keyless entry, industrial monitoring and control applications.

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