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Miniaturized high-isolation duplex device

A duplex device and high isolation technology, applied in the field of communication, can solve the problems of lower than the theoretical value and larger filter volume, and achieve the effect of small size, light weight, and meeting the requirements of transceiver isolation

Pending Publication Date: 2022-04-12
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional broadband comb-line structure filters have strong coupling between cavities, and the leakage between non-adjacent cavities will easily cause the stop-band suppression to deteriorate and drop, which is more than ten decibels or more lower than the theoretical value.
Achieving higher stop-band rejection requires more orders, which will make the filter volume larger

Method used

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  • Miniaturized high-isolation duplex device
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  • Miniaturized high-isolation duplex device

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Experimental program
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Embodiment Construction

[0022] Below, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0023] In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art Generally speaking, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

[0024] A miniaturized high-isolation duplex device includes a broadband impedance converter 1, a combiner 2, a high-frequency filter 3, and a low-frequency filter 4. It is characterized in that: when the duplex device is a type A machine, the low-frequency filter 4 is sequentially connected with the combiner 2 and the broadband impedance converter 1 to form a transmission channe...

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Abstract

The invention discloses a miniaturized high-isolation duplex device, and belongs to the technical field of communication. The broadband impedance converter comprises a broadband impedance converter, a combiner, a high-frequency filter and a low-frequency filter, a first input / output port of the low-frequency filter, a first input / output port of the broadband impedance converter and a first input / output port of the high-frequency filter are all connected with the combiner, a second input / output port of the high-frequency filter is connected with the high-frequency interface, a second input / output port of the low-frequency filter is connected with the low-frequency interface, and a second input / output port of the broadband impedance converter is connected with the combiner. And a second input / output port of the broadband impedance converter is connected with the antenna port. Idle space is fully utilized, the size is small, the weight is light, and the requirements of communication equipment for equipment miniaturization, low loss and rapid switching are met.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a miniaturized high-isolation duplex device. Background technique [0002] In current communication systems, the RF front-end module and the antenna feed are often in a split structure, and the two are connected by a feeder such as a radio frequency coaxial cable or a waveguide. Although the RF cable connection has the characteristics of convenient connection and easy disassembly, in specific engineering applications, because it is located at the front end of the RF, it is a frequently disassembled part, which is prone to problems such as breakage, poor contact, and damage to the connector plug, so that the insertion loss becomes smaller. Big. In the communication system, the RF front-end module and the RF cable are located between the low-noise amplifier and the antenna feed, and their insertion loss directly affects the noise figure of the receiving channel, thereby aff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/212H01P1/213H01P1/205H01P1/207
Inventor 王琦卢红丽刘帆薛宇飞贾建蕊李春红
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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