5g NR LFEM Out-of-Band Suppressed Null Reconfigurable Structure Receiver

Abstract

The invention provides a 5G NR LFEM out-of-band suppression zero-point reconfigurable structure receiver, which belongs to the technical field of communications. It includes ANT antenna input port, SP4T SP4T switch, SP3T SP3T switch, filter module, low noise amplifier LNA, output module and switch digital control interface MIPI. The suppression zero point provided by the present invention can be reconfigured, saves the designer's simulation and debugging time, meets different requirements of different terminals for out-of-band suppression, and the same scheme is compatible with multiple requirements, so that the same design can be compatible with different out-of-band requirements of different terminal customers for different Bands. Suppressing demand makes designers more flexible and convenient. The invention solves the problem that the out-of-band suppression zero point change in the traditional 5G NR LFEM receiving module needs to be changed in the design and matching method of the substrate.

Description

technical field [0001] The invention belongs to the field of communication technologies, and in particular relates to a 5G NR LFEM out-of-band suppression zero-point reconfigurable structure receiver. Background technique [0002] The RF front-end module is the core component of 5G communication. It is divided into the main transmitter module and the diversity receiver module. The 5G NR (New Radio) part of the diversity receiver module is called 5G NR LFEM, which is mainly composed of Switch, LNA, N77 / N79 filter is the core. [0003] In the 5G NR LFEM receiving module, the mainstream commonly used 5G receiving frequency bands are Bnad N77 (3.3GHz ~ 4.2GHz) and N79 (4.4GHz ~ 5GHz). There are rigid requirements for out-of-band suppression of received signals in terminal use. As for out-of-band suppression in different frequency bands, each terminal will vary according to different usage scenarios and regions. The traditional solution determines the position and matching meth...

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, a 5G NR LFEM out-of-band suppression zero-point reconfigurable structural receiver provided by the present invention solves the problem of changing the out-of-band suppression zero point in the traditional 5G NR LFEM receiving module and needs to change the substrate design and matching way problem

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