Phase dispersion compensation apparatus of waveguide branch electric bridge

A waveguide branching and dispersion compensation technology, applied in the field of dispersion compensation, can solve the problem of inability to obtain broadband phase characteristics, and achieve the effects of good standing wave index, simple and compact structure, and low loss.

Active Publication Date: 2017-06-20
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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  • Phase dispersion compensation apparatus of waveguide branch electric bridge
  • Phase dispersion compensation apparatus of waveguide branch electric bridge
  • Phase dispersion compensation apparatus of waveguide branch electric bridge

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] like figure 1 As shown, it is a waveguide branch bridge model with a working bandwidth of 9.0-9.6GHz. The dimension of the long side of the waveguide port is a=22.86mm, and the dimension of the wide side is 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 through port, P3 is the isolation port, and P4 is the coupling port.

[0030] If a section of waveguide is added, the size of...

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Abstract

The invention belongs to the technical field of dispersion compensation, and particularly relates to a phase dispersion compensation apparatus of a waveguide branch electric bridge. The phase dispersion compensation apparatus comprises waveguide high-impedance and low-impedance conversion sections arranged on an output arm of a direct connection opening of the waveguide branch electric bridge; the waveguide high-impedance and low-impedance conversion sections adopt four high-impedance conversion sections and four low-impedance conversion sections to realize dispersion compensation and to complete impedance matching at the same time; the sum of the lengths of the adjacent high-impedance conversion sections and the low-impedance conversion section is equal to wavelength of 1 / 4 waveguide; through reciprocating phase stacking, reflected wave and incident wave are opposite in phases, and the amplitudes are counteracted, so that impedance matching and port standing wave are effectively improved, and phase dispersion of the branch electric bridge body is well compensated; by adoption of the phase dispersion compensation apparatus, dispersion compensation can be realized by only modifying waveguide dimensions on the output arm of the direct connection opening; and the phase dispersion compensation apparatus has the advantages of simple and compact structure, low loss, high port matching, high power capacity and the like.

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 sidelobes are required to be lower and lower. Especially for airborne pulse Doppler radar, in order to counter ground clutter interference, the requirement for the side lobe of the antenna should be less than -30 decibels, -40 decibels, or even less than -50 decibels. To obtain such a low side lobe, most slot 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 key technology. In order to reduce the mutual coupling between the antenna units and the internal channels of t...

Claims

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Application Information

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Patent Type & Authority Applications(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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