A stripline forward wave directional coupler unit circuit
A technology of directional coupler and unit circuit, applied in the direction of circuits, waveguide devices, electrical components, etc., can solve the problems that microstrip transmission lines do not have self-encapsulation characteristics, etc., achieve simple structure, enhanced working bandwidth, and increased odd and even mode phase poor effect
Active Publication Date: 2022-02-18
HUAIAN COLLEGE OF INFORMATION TECH
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Problems solved by technology
The above-mentioned FWDC is designed based on the periodic unit structure of the microstrip transmission line, and the microstrip transmission line itself does not have self-encapsulation characteristics, so it is subject to certain restrictions in practical applications
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[0035] A strip line forward wave directional coupler unit circuit, the unit circuit includes a five-layer circuit structure and four dielectric layers arranged between adjacent circuit structures, such as figure 1 shown. The five-layer circuit structure includes: upper ground plate 1, parallel plate 2, first metal via group 3, coupled strip line group 4, two first branch lines 5, two first metal ring pads 6, two A second metal via hole 7, two second branch lines 8, two second metal ring pads 9, and a lower ground plate 10; wherein, the upper ground plate 1 is located on the first layer of the overall circuit; the parallel plate 2 includes, etc. The upper and lower metal plates arranged in parallel in size, wherein the upper metal plate is located on the second layer of the overall circuit, and the lower metal plate is located on the fourth layer of the overall circuit; the coupling strip line group 4 is located on the third layer of the overall circuit; the lower ground plate ...
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The invention discloses a strip line forward wave directional coupler unit circuit in the field of passive microwave devices. It includes: a grounding plate group, including two upper and lower grounding plates with equal dimensions arranged in parallel, and a parallel plate is arranged between them; parallel plates, including two upper and lower metal plates with equal dimensions and parallel settings, and two A coupling stripline group is provided between them; a dielectric layer is provided between the coupling stripline group and the metal plate, and between the adjacent metal plate and the ground plate; the first metal via group is connected to the phase Between the adjacent metal plate and the grounding plate; the second metal via hole is connected between the two grounding plates, and the second metal via hole is connected with the first metal ring pad and the second metal ring pad, Wherein, the first metal ring pad is connected to the coupled stripline group through the first branch line. The unit circuit of the stripline forward wave directional coupler has the characteristic of self-encapsulation, is more conducive to the integration of the front end of the system, has a simple structure and strong practicability.
Description
technical field [0001] The invention relates to a strip line forward wave directional coupler unit circuit, which belongs to the technical field of passive microwave devices. Background technique [0002] As a microwave passive device, the function of the directional coupler is to distribute and combine the power of the microwave signal in a certain proportion and maintain a certain directionality. The signal is input from the input terminal and output at the through terminal and coupled terminal and kept isolated from each other. In various communication systems, directional couplers are widely used. For example, in the radio frequency communication system, it can be used for signal detection and processing, signal synthesis, power monitoring, etc.; in the wireless communication system, it can realize mutual isolation between signals, etc.; The energy is coupled out as a local oscillator signal, which can be used to synthesize the antenna pattern of the feed network of th...
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IPC IPC(8): H01P5/18
CPCH01P5/184
Inventor 于正永董进钱建波倪春美朱重龙
Owner HUAIAN COLLEGE OF INFORMATION TECH