Radio frequency front-end frequency selection circuit and signal receiving method thereof
A technology of frequency selection circuit and radio frequency front-end, which is applied in electrical components, transmission systems, etc., can solve the problems of increasing the design difficulty of the front-end multiplexer, large equipment size, and increasing the size of the multiplexer, and achieve consistent processing. Good performance, improved production efficiency, flexible design effect
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[0031] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0032] The traditional RF front-end frequency selection circuit such as figure 1 As shown, the circuit uses a multiplexer + switch to achieve frequency selection. With the increase of the frequency selection network at the front end of the receiver, the volume of the circuit will become larger and larger, which is not conducive to integration and high cost.
[0033] The present invention proposes a radio frequency front-end frequency selection circuit based on a microstrip filter. Part, the following according to different applications, combined with figure 2 , 3 , 4 Explain the specific application of the above circuit.
[0034] see figure 2 , the circuit is suitable for time-sharing single-channel frequency selection. There is only one antenna in the circuit. The...
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