Filtering directional coupler with adjustable frequency

A directional coupler and frequency technology, applied in waveguide devices, electrical components, connecting devices, etc., can solve problems such as complex system framework, large circuit area, and large loss

Inactive Publication Date: 2014-02-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the system framework is relatively complex, the required circuit area is large, and the loss after circuit cascading is large

Method used

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  • Filtering directional coupler with adjustable frequency
  • Filtering directional coupler with adjustable frequency

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0011] Such as figure 1 , figure 2 as shown in figure 1 , figure 2 As shown, a filter directional coupler with adjustable frequency includes a metal copper-clad upper layer 1, a dielectric layer 3, and a metal copper-clad lower layer 2 stacked sequentially from top to bottom. In order to form the directional coupler of this embodiment, by printing The circuit board manufacturing process processes the metal copper-clad upper layer 1 to form the required metal pattern (circuit structure), and the metal copper-clad lower layer 2 is not processed, and the various parts in the metal pattern are divided by virtual dotted lines, said The metal copper-clad upper layer 1 has four coupling lines 11, and every adjacent two of the four coupling lines 11 are divided into a group, and there is a slit 12 between the two coupling lines 11 of each group, a...

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Abstract

The invention relates to a filtering directional coupler with an adjustable frequency, which comprises an upper metal copper clad layer, a dielectric layer and a lower metal copper clad layer which are sequentially laminated from top to bottom, and is characterized in that the upper metal copper clad layer is provided with four coupling wires, and each two adjacent coupling wires are classified into a group, and a gap is formed between the two coupling wires of the same group; one ends of the four coupling wires are respectively connected with four grounded patches through four varactors, and the other ends are respectively connected with two ends of two branched wires through four transition wires; the four coupling wires, four transition wires and two branched wires surround an approximately-closed rectangular region; the four corners of the rectangle region are directly connected with four feed wires; and the grounded patches penetrate the dielectric layer to be connected with the lower metal copper clad layer through metallization grounded holes. The invention has the benefits that the filtering directional coupler with an adjustable frequency has a filtering function and a frequency adjustable capacity.

Description

technical field [0001] The invention belongs to the technical field of microwave passive devices, in particular to a directional coupler in microwave passive devices. Background technique [0002] One of the development trends of wireless mobile communication technology is to integrate multiple wireless platforms to form a multi-functional RF front end to meet the needs of system miniaturization and integration. Therefore, some new development requirements have been put forward for radio frequency circuits, such as continuously adjustable operating frequency and multifunctional integration of circuits. At this time, as one of the key devices in the radio frequency circuit - the directional coupler also needs to carry out the corresponding frequency adjustable and functional integration design. [0003] A directional coupler is a four-port device that inputs a signal from any one of its ports, outputs two signals from the corresponding two ports, and maintains good isolation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/18
Inventor 程钰间樊勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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