317050008

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Frequency:	1.575GHz
Sensitivity:	-165dBm
Data Rate (Max):	--
Modulation or Protocol:	Galileo, GLONASS, GPS
Applications:	General Purpose
Current - Receiving:	--
Data Interface:	UART
Memory Size:	--
Antenna Connector:	--
Features:	--
Voltage - Supply:	3.6V
Operating Temperature:	-20°C ~ 70°C
Package / Case:	Module
Supplier Device Package:	--

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RF Receivers

317050008 Application Field and Working Principle

Radio Frequency (RF) receivers are an essential component of electronic systems. They range from small receivers used in consumer electronics like laptop computers, to large commercial wireless systems used in the telecommunications industry. In this article, we’ll discuss the different types of RF receivers, their application fields, and their working principle.The most common type of RF receiver is the superheterodyne. It is used in most consumer electronics and provides highly accurate performance. It consists of an oscillator, mixer, IF (intermediate frequency) amplifier, and detector stages. The input signal is mixed with a local oscillator signal, forming an IF frequency. The IF signal is then amplified and detected. Superheterodyne receivers are highly selective and have low noise levels.The second type of RF receiver is the Direct Conversion Receiver (DCR). This type of receiver mixes the incoming signal with an oscillator signal that is equal to the center frequency of the signal. This eliminates the need for an intermediate frequency amplifier and detector stages. It is much simpler than the superheterodyne, but it is also less accurate. DCR receivers are often seen in consumer products like cordless telephones and wireless LANs.The third type of RF receiver is the Frequency Modulated (FM) receiver. It has become the standard for use in cordless phones, radios, and television, as well as the cellular industry. In this type of receiver, the amplitude of the signal is kept constant while its frequency is increased or decreased according to the intended signal. FM receivers can be highly selective and can reject strong interfering signals.Finally, there is the Pulse Length Modulation (PLM) receiver. This type of receiver is used for detecting very short pulses like those used by radar systems. The input signal is converted into a series of pulses of varying lengths that are then amplified and detected. PLM receivers are highly sensitive and can be used for long-distance communications.In conclusion, RF receivers are an essential component of electronic systems. They come in many forms and each type has its own unique application field and working principle. Superheterodyne receivers are used for accurate performance in consumer electronics, while direct conversion receivers are simpler but less accurate. FM receivers are the standard for cordless phones and the cellular industry, and PLM receivers are used for long-distance communications.

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