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X-band magnetic control frequency adjustable directional coupler

A directional coupler, X-band technology, applied in the microwave field, to achieve the effect of high frequency, simple and small size, and easy to integrate

Active Publication Date: 2022-04-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] In view of the above existing problems or deficiencies, in order to solve the high power transmission problem of the existing directional coupler with variable frequency, the present invention provides a directional coupler with adjustable frequency of X-band magnetic control, by adopting the substrate integrated waveguide structure The ferrite material is loaded on the short slot directional coupler, and the frequency adjustment of the directional coupler is realized by means of magnetic field regulation

Method used

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  • X-band magnetic control frequency adjustable directional coupler
  • X-band magnetic control frequency adjustable directional coupler
  • X-band magnetic control frequency adjustable directional coupler

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] A design method for an X-band magnetic control frequency adjustable directional coupler, comprising the following steps:

[0027] Step 1. According to the design method of SIW short slot directional coupler, determine the parameters:

[0028] The thickness of the dielectric substrate t=0.50mm, the relative permittivity ε of the dielectric substrate r =2.1, metallized through-hole diameter d=0.55mm, distance between adjacent metallized through-holes in the same row p=0.68mm, distance a between two adjacent rows of metallized through-holes=14.32mm, matching screws (that is, matching metal Diameter d1=0.15mm, slot width w=14.94mm; the transmission performance of the short slot directional coupler is modeled and analyzed in HFSS, and there is 30dB isolation and standing wave between 9.5Ghz and 10.5Ghz , the coupling degree is about 11dB; ...

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Abstract

The invention relates to a microwave technology, in particular to a directional coupler with adjustable X-band magnetic control frequency. Two rows of ferrite junctions are added in the SIW short-slit directional coupler, and a certain distance is kept between the two ferrite junctions in each row. Under the action of an external magnetic field, the ferrite junction is influenced and the equivalent inductance value of the SIW is changed through a magnetic field regulation and control mode, so that the electrical length of the transmission line is changed, the frequency of the transmission line is further changed, and finally, the frequency of the directional coupler is regulated. The device is low in delay, is not externally connected with an assembly structure, is simple, is small in size, is easy to integrate, and has a small influence on S31 (coupling degree) and S21 (insertion loss) under the condition that the frequencies of S11 (standing wave) and S41 (isolation) are synchronously adjusted. And high-power transmission is facilitated.

Description

technical field [0001] The invention relates to microwave technology, in particular to a directional coupler with adjustable X-band magnetic control frequency. Background technique [0002] With the development and progress of science and technology, microwave technology is gradually developing towards miniaturization and integration. Frequency-adjustable directional couplers can effectively solve this problem. Compared with traditional directional couplers, frequency-adjustable directional couplers can effectively reduce the number of couplers in the entire wireless communication system, reduce the weight of the wireless communication system, and facilitate small change. [0003] Compared with the traditional waveguide structure, the substrate integrated waveguide is significantly reduced in size, and the structure is similar to a planar structure, which is beneficial to integration, and also has the characteristics of microstrip components. [0004] The existing frequenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/18
Inventor 汪晓光王正华赵晓琴
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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