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Open-loop cross-coupled band-pass filter and corresponding radio frequency transceiving front-end circuit structure

A band-pass filter and cross-coupling technology, applied in the field of RF transceiver front-end circuit structure, can solve the problems of high price, large volume, high square coefficient, etc., and achieve the effect of solving low cost

Pending Publication Date: 2020-03-17
TRANSCOM INSTR +1
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AI Technical Summary

Problems solved by technology

Although the custom-made dielectric filter or LTCC filter is small in size, the group delay characteristic is limited by the degree of suppression and volume constraints, and the price is relatively high; although the cavity filter has the advantages of high squareness coefficient and small in-band fluctuation, the volume Larger, not suitable for 5G massive MIMO systems

Method used

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  • Open-loop cross-coupled band-pass filter and corresponding radio frequency transceiving front-end circuit structure
  • Open-loop cross-coupled band-pass filter and corresponding radio frequency transceiving front-end circuit structure
  • Open-loop cross-coupled band-pass filter and corresponding radio frequency transceiving front-end circuit structure

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Embodiment Construction

[0028] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0029] The split-ring cross-coupled bandpass filter of the present invention includes four split-ring resonators, and the four split-ring resonators are arranged up and down.

[0030] As a preferred embodiment of the present invention, the four split ring resonators are the first split ring resonator, the second split ring resonator, the third split ring resonator and the fourth split ring resonator, the first split ring resonator The two split ring resonators are connected to the input end, the fourth split ring resonator is connected to the output end, the openings of the second split ring resonator and the fourth split ring resonator are opposite, and the The first split ring resonator and the second split ring resonator and the third split ring resonator and the fourth split ring resonator, the third sp...

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Abstract

The invention relates to an open-loop cross-coupled band-pass filter which comprises four open loop resonators which are arranged up and down. The invention further relates to a radio frequency transceiving front-end circuit structure with the band-pass filter. By adopting the open loop cross-coupled band-pass filter and the radio frequency transceiving front-end circuit structure with the band-pass filter, the influence of the group time delay of the band-pass filter on the 5G signal distortion is solved. The bandwidth of a 5G system is larger than that of a 4G system, and the requirement ofthe 5G system for the group time delay of the filter is higher. According to the present invention, the problems of low cost and small size of the band-pass filter are solved. The 5G system adopts thelarge-scale multiple channels, and has higher requirements for the size and the cost.

Description

technical field [0001] The present invention relates to the field of microwave and radio frequency technology, in particular to the field of radio frequency front-end band-pass filter technology, and specifically refers to a split-ring cross-coupled band-pass filter and a radio-frequency transceiver front-end circuit structure with the band-pass filter. Background technique [0002] The rapid development of the wireless communication industry has attracted widespread attention, and both the market and users are full of expectations for its development. With the development of wireless communication technology, people's demand for wireless network continues to increase. The popularity of mobile devices such as smartphones and PDAs heralds the arrival of a mobile broadband society. According to Shannon's theorem, in order to meet the growth of system capacity, 5G proposes massive MIMO and 200MHz bandwidth (sub-6GHz) requirements. In the 5G communication network, whether it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203H04B1/40
CPCH01P1/203H04B1/40
Inventor 解建红蒋佳佳蒋政波
Owner TRANSCOM INSTR
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