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A phase dispersion compensation device of a waveguide branch bridge

A technology of waveguide branching and dispersion compensation, which is applied in the field of dispersion compensation, can solve the problems of not being able to obtain broadband phase characteristics, etc., and achieve the effects of good standing wave index, improved standing wave and compact structure

Active Publication Date: 2022-08-09
ANHUI SUN CREATE ELECTRONICS
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Problems solved by technology

[0003] Although the feed network is adjusted to the same phase at the center frequency, their lengths are also equal, but the phase characteristics of the broadband cannot be obtained due to the dispersion effect

Method used

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  • A phase dispersion compensation device of a waveguide branch bridge
  • A phase dispersion compensation device of a waveguide branch bridge
  • A phase dispersion compensation device of a waveguide branch bridge

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Embodiment Construction

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] like figure 1 As shown in the figure, it is a waveguide branch bridge model with a working bandwidth of 9.0-9.6GHz. The long side dimension of the waveguide port is a=22.86mm, and the wide side dimension b=10.96mm. The four ports of the waveguide branch bridge are as follows: figure 1 As shown, P1 is the input port, P2 is the straight-through port, P3 is the isolation port, and P4 is the coupling port.

[0029] If a section of...

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Abstract

The invention belongs to the technical field of dispersion compensation, in particular to a phase dispersion compensation device of a waveguide branch bridge. The invention includes a waveguide high-low impedance transformation section arranged on the output arm of the straight-through port of the waveguide branch bridge. The waveguide high-low impedance transformation section adopts four high-impedance transformation sections and four low-impedance transformation sections to realize dispersion compensation, and completes the Impedance matching, the sum of the lengths of the adjacent high-impedance transformation sections and low-impedance transformation sections is a quarter of the wavelength of the waveguide. After the round-trip phase superposition, the reflected wave is opposite to the incident wave, and the amplitude is canceled, which effectively improves the The impedance matching and the standing wave of the port can well compensate the phase dispersion of the branch bridge itself. The invention can realize dispersion compensation only by modifying the size of the waveguide on the output arm of the straight port, and has the advantages of simple and compact structure, low loss, good port matching and high power capacity.

Description

technical field [0001] The invention belongs to the technical field of dispersion compensation, in particular to a phase dispersion compensation device of a waveguide branch bridge. Background technique [0002] The anti-jamming performance requirements of modern radars are getting higher and higher, so the antenna side lobes are required to be lower and lower. Especially for airborne pulse Doppler radar, in order to counteract the clutter interference of ground objects, the requirements for the antenna side lobes should be less than -30 decibels, -40 decibels, or even lower than -50 decibels. To obtain such a low side lobe, most of the slit array antennas are used, and the amplitude and phase distribution of the antenna power division network should have high precision. Therefore, how to design a power division network with high-precision amplitude and phase distribution has become a technical key. In order to reduce the mutual coupling between the antenna units and the v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/18
CPCH01P5/18
Inventor 侯艳茹胡卫东孙浩李霞
Owner ANHUI SUN CREATE ELECTRONICS
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