CN219980820U - Multichannel radio frequency front end based on LRM framework - Google Patents

Abstract

The utility model relates to the technical field of wireless communication, in particular to a multichannel radio frequency front end based on an LRM architecture; the power divider comprises a multi-channel formed by six channels and an insertion box, wherein the channels are integrated on the insertion box, each channel is mutually independent, noise signals are divided into six paths to the output end of each channel through the power divider, and the noise signals are output by combining with radio frequency signals; the input L-band radio frequency signals are amplified, directly passed through, filtered, digitally attenuated, amplified, combined and low-pass filtered through the channels and then output, noise signals are generated at the same time, the noise is amplified and filtered and then divided into six channels, and the six channels of noise signals are respectively output to the output ends of the six channels and are combined with the channel signals to be output; the radio frequency front end channels are integrated into one module, and the effects of compact structure, convenience in installation and easiness in debugging are achieved.

Description

Multichannel radio frequency front end based on LRM framework

Technical Field

The utility model relates to the technical field of wireless communication, in particular to a multichannel radio frequency front end based on an LRM architecture.

Background

The receiver is used as a component of a wireless communication system, the structure and performance of the receiver directly affect the whole communication system, and the radio frequency front end is used as an important component of the receiver and is a key component of dynamic performance of the receiver, and the radio frequency front end works before the intermediate frequency amplifier. Such as dynamic range, intermodulation distortion, 1dB compression point, and third order intermodulation intercept point, are directly related to the performance of the receiver front-end.

The existing communication usually works in an L frequency band, adopts an AD direct sampling mode, requires more channels of a receiving front end, often requires a plurality of radio frequency front ends to form, and leads to low space utilization rate.

Disclosure of Invention

The utility model aims to provide a multichannel radio frequency front end based on an LRM architecture, which integrates a plurality of radio frequency front end channels into one module, and achieves the effects of compact structure, convenient installation and easy debugging.

In order to achieve the above purpose, the multichannel radio frequency front end based on the LRM architecture comprises a multichannel and an insertion box, wherein the multichannel and the insertion box are formed by six channels, a plurality of channels are integrated on the insertion box, each channel is independent, and noise signals are divided into six paths to the output end of each channel through a power divider and are output in a combined way with radio frequency signals.

Wherein, the frequency range of the input signal of the channel is 960 MHz-1300 MHz.

Wherein, the channel carries out filtering at two ends, the filtering frequency band at one end is 960-1180 MHz, and the filtering frequency band at the other end is 1120-1300 MHz.

Wherein, the cartridge adopts an LRM architecture.

The channel comprises a low-noise amplifier, a filter bank, an attenuator, a first amplifier and a low-pass filter, wherein the filter bank is respectively connected with the low-noise amplifier and the attenuator, the first amplifier is respectively connected with the attenuator and the low-pass filter, a combining point is arranged between the first amplifier and the low-pass filter, and the combining point is the output end of the channel.

The utility model relates to a multichannel radio frequency front end based on an LRM architecture, wherein an input L-band radio frequency signal is amplified, directly passed, filtered, digitally attenuated, amplified, combined and low-pass filtered and then output, a noise signal is generated at the same time, the amplified and filtered noise is divided into six paths, and the six paths of noise signals are respectively output to the output ends of six channels and the combined output of the channel signals; the radio frequency front end channels are integrated into one module, and the effects of compact structure, convenience in installation and easiness in debugging are achieved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic circuit diagram of a multichannel rf front-end based on LRM architecture according to the present utility model.

10-channel, 11-low noise amplifier, 12-filter bank, 13-attenuator, 14-first amplifier, 15-combining point, 16-low pass filter, 21-second amplifier, 22-filter, 23-power divider.

Detailed Description

Referring to fig. 1, fig. 1 is a schematic circuit diagram of a multichannel rf front end based on LRM architecture.

The utility model provides a multichannel radio frequency front end based on an LRM architecture, which comprises: the multi-channel power divider comprises a multi-channel and a plug box which are formed by six channels 10, wherein a plurality of channels 10 are integrated on the plug box, each channel 10 is mutually independent, noise signals are divided into six paths to the output end of each channel 10 through the power divider 23, and the noise signals are combined with radio frequency signals to be output.

In this embodiment, the channel 10 outputs the input L-band radio frequency signal after amplifying and passing through, filtering, digitally-controlled attenuation, amplifying, combining and low-pass filtering, and generates noise signals, the noise is divided into six channels after amplifying and filtering, and the six channels of noise signals are respectively output to the output ends of the six channels 10 and combined with the channel signals; the multiple channels 10 are integrated into one module, and the effects of compact structure, convenient installation and easy debugging are achieved.

Further, the frequency range of the input signal of the channel 10 is 960 MHz-1300 MHz.

Further, the channel 10 performs filtering at two ends, wherein the filtering frequency band at one end is 960-1180 MHz, and the filtering frequency band at the other end is 1120-1300 MHz.

In this embodiment, the multichannel radio frequency front end based on LRM architecture amplifies the received 960-1300 MHz signal, filters the amplified signal at two ends, and outputs the amplified signal in a combination way with noise signals, wherein the frequency ranges at two ends are 960-1180 MHz and 1120-1300 MHz respectively; each channel 10 in the multichannel radio frequency front end based on the LRM architecture has an amplifying straight-through function, a gain control function and a channel 10 detection function; the amplifying straight-through function is a low noise amplifier at the protection input end, and when the large signal input is a straight-through path; the gain control range is 31dB, the step is 1dB, and when the channel 10 detects a module fault, the fault channel 10 is rapidly detected; the multichannel radio frequency front end based on the LRM architecture has voltage, current and temperature detection functions, so that the fault can be conveniently and rapidly positioned when the front end module fails.

Further, the cartridge adopts an LRM architecture.

In this embodiment, an LRM architecture is adopted, so that the installation is convenient, and six channels 10 are integrated in the cartridge of one LRM architecture, so that the size is small and the structure is compact.

Further, the channel 10 includes a low noise amplifier 11, a filter bank 12, an attenuator 13, a first amplifier 14 and a low pass filter 16, where the filter bank 12 is connected with the low noise amplifier 11 and the attenuator 13, the first amplifier 14 is connected with the attenuator 13 and the low pass filter 16, a combining point 15 is between the first amplifier 14 and the low pass filter 16, and the combining point 15 is an output end of the channel 10.

In this embodiment, the second amplifier 21, the filter 22 and the power divider 23 multiplex the channel 10 to provide power and control functions such as gain control, amplification direct connection, and band switching, where the channel 10 outputs the input L-band radio frequency signal after passing through the low noise amplifier 11, the filter bank 12, the attenuator 13, the first amplifier 14, the combining point 15, and the low pass filter 16, and generates a noise signal, and the noise is amplified and filtered to be power-divided into six channels, where the six channels of noise signals are respectively output to the output ends of the six channels 10 and the channel signal in a combining way; the radio frequency front end channels are integrated into one module, and the effects of compact structure, convenience in installation and easiness in debugging are achieved.

The above disclosure is only a preferred embodiment of the present utility model, and it should be understood that the scope of the utility model is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present utility model.

Claims (5)

1. A multichannel RF front end based on LRM architecture is characterized in that,

the power divider comprises a multi-channel formed by six channels and an inserting box, wherein a plurality of channels are integrated on the inserting box, each channel is mutually independent, noise signals are divided into six paths to the output end of each channel through the power divider, and the noise signals are output by combining with radio frequency signals.

2. The LRM architecture based multichannel RF front-end of claim 1,

the frequency range of the input signal of the channel is 960 MHz-1300 MHz.

3. The LRM architecture based multichannel RF front-end of claim 1,

the channel carries out filtering at two ends, the filtering frequency band at one end is 960-1180 MHz, and the filtering frequency band at the other end is 1120-1300 MHz.

4. The LRM architecture based multichannel RF front-end of claim 1,

the cartridge adopts an LRM architecture.

5. The LRM architecture based multichannel RF front-end of claim 1,

the channel comprises a low-noise amplifier, a filter bank, an attenuator, a first amplifier and a low-pass filter, wherein the filter bank is respectively connected with the low-noise amplifier and the attenuator, the first amplifier is respectively connected with the attenuator and the low-pass filter, a combining point is arranged between the first amplifier and the low-pass filter, and the combining point is the output end of the channel.