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Filter device and method for realizing filtering power division and duplexer functions

A filter, a square technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of large footprint, high cost, single filter function, etc., and achieve the effect of ingenious structural design and cost reduction

Inactive Publication Date: 2021-01-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a filter device in order to solve the problems in the prior art that the number of duplexers is large, the occupied volume is large, the cost is high, the filter function is single, and the center frequency is uncontrollable

Method used

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  • Filter device and method for realizing filtering power division and duplexer functions
  • Filter device and method for realizing filtering power division and duplexer functions
  • Filter device and method for realizing filtering power division and duplexer functions

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

[0026] refer to Figure 1-4 Shown, the present invention provides following embodiment:

[0027] A filter device, comprising a square dielectric substrate, four resonators are arranged on the dielectric substrate, respectively the first resonator 1, the second resonator 2, the third resonator 3 and the fourth resonator 4, The resonators are symmetrically arranged with the center point of the dielectric substrate as the origin; each resonator adds two branches through a capacitive load, and a single branch between adjacent resonators is connected through a varactor diode. As a further preference, the die...

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Abstract

The invention discloses a filter device and a method for realizing functions of a filter power divider and a duplexer, which are used for realizing switching between the functions of the duplexer anda filter power division network, the functions of the duplexer can realize independent adjustment of receiving or transmitting passband frequency, and the passband of the filter power division function is reconfigurable, the filter device comprises a dielectric substrate, four resonators are arranged on the dielectric substrate in a central symmetry mode, the adjacent resonators are connected through varactors which are connected in series back to back, cathodes of the varactors load a voltage source, the coupling effect between the resonators of the filter network is adjusted by changing thevoltage value, and by changing the voltage value and the coupling coefficient, a filtering power division function or an independent channel controllable duplexer function is realized.

Description

technical field [0001] The invention belongs to the technical field of microwave communication, relates to a duplexer and power division filter technology, in particular to a filter device and a method for realizing filter power division and duplexer functions. Background technique [0002] The high-speed communication rate and huge communication capacity of 5G have promoted the continuous upgrading of RF front-end technology to meet the huge growing market demand. As the design of 5G terminals is becoming more and more complex, as one of the core components of the mobile communication system, it is responsible for transmitting and receiving the mobile phone. The number of filters and duplexers required to separate signals from different frequency bands is increasing exponentially. In order to reduce the size and cost of communication systems, multi-channel reconfigurable technology and duplexer technology are becoming more and more important in communication systems. In tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/208
CPCH01P1/208H01P1/2088
Inventor 杨涛赖俊辰徐锐敏
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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