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A slot-line coupled feed bandpass unit for multi-frequency balanced filter/duplexer

A balanced filter and slot-line coupling technology, which is applied to electrical components, waveguide devices, circuits, etc., can solve the problems that the work of multi-frequency duplexers has not been reported, and achieve simple implementation of common mode, improved selectivity, and common The effect of mode suppression improvement

Inactive Publication Date: 2018-06-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are only a small number of works designing balanced duplexers, while no work involving multi-frequency duplexers has been reported

Method used

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  • A slot-line coupled feed bandpass unit for multi-frequency balanced filter/duplexer
  • A slot-line coupled feed bandpass unit for multi-frequency balanced filter/duplexer
  • A slot-line coupled feed bandpass unit for multi-frequency balanced filter/duplexer

Examples

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with specific examples.

[0047] Such as figure 1 As shown, the slot-line coupled feeding bandpass unit for the multi-frequency balanced filter / duplexer described in this embodiment includes a mirror-symmetric first differential input-output port pair and a second differential input-output port pair, and the mirror image Symmetrical first slot line resonator C 1 and the second slot line resonator C 2 And the mirror-symmetric first microstrip resonator pair and the second microstrip resonator pair; wherein, the first differential input and output port pair and the second differential input and output port pair are connected to the first slot line resonator 1 and the second slot line resonator C 2 The same axis of symmetry, and the axis of symmetry is perpendicular to the axis of symmetry of the first pair of microstrip resonators and the second pair of microstrip resonators; the pair of first differ...

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Abstract

The invention discloses a grooved wire coupling and feeding bandpass unit for a multi-frequency balance filter / diplexer. The grooved wire coupling and feeding bandpass unit comprises symmetric first and second differential input-output port pairs, symmetric first and second grooved wire resonators and symmetric first and second microstrip resonator pairs, wherein the first differential input-output port pair comprises first and second input-output ports for an object, the first grooved wire resonator and the first differential input-output port pair have a microstrip feed line coupling portion, the second differential input-output port pair comprises symmetric third and fourth input-output ports, and the second grooved wire resonator and the second differential input-output port pair have a microstrip feed line coupling portion. The first microstrip resonator is formed by a first microstrip resonator and a second microstrip resonator, and the second microstrip resonator is formed by a third microstrip resonator and a fourth microstrip resonator. The grooved wire coupling and feeding bandpass unit realizes multi-frequency balance filter and balance diplexer with high selectivity, high common mode inhibition, independent and controllable frequency and bandwidth.

Description

technical field [0001] The invention relates to the technical field of microwave communication, in particular to a slot-line coupled feeding bandpass unit for a multi-frequency balanced filter / duplexer. Background technique [0002] The development of microwave and radio frequency communication technology makes our life more convenient. However, the bottleneck of this technology is limited frequency resources. With the rise of communication protocols such as Bluetooth, WiMax, WLAN, 3G, and LTE, how to suppress interference and blockage between frequency bands has become more and more serious. Multi-frequency filter / duplexer is a commonly used frequency selective device, and its performance usually determines the function of the communication system, so it is the most basic passive device in the RF communication front end. [0003] On the other hand, the communication system processing process often encounters the interference of environmental noise, and the noise is the bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203H01P7/08
Inventor 褚庆昕邱雷雷
Owner SOUTH CHINA UNIV OF TECH
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