Planar waveguide continue transverse stub (CTS) antenna broadband feeding line source based on planar dielectric lens

Abstract

The invention proposes a planar waveguide continue transverse stub (CTS) antenna broadband feeding line source based on a planar dielectric lens, which is used for solving the problems of incapability in simultaneously achieving miniaturization, broadband and favorable matching and high difficulty in processing assembly of the traditional line source. The feeding line source comprises an H-surface trumpet (1), a planar dielectric lens (2) and a planar waveguide (3), wherein an output port of the H-surface trumpet (1) is connected with the planar waveguide (3), the planar dielectric lens (2) is arranged in the planar waveguide (3) and comprises an intermediate layer (21) and two matching layers (22), the two matching layers are symmetric to the intermediate layer (21) and comprise a plurality of matching sub layers, each layer adopts a straight line array structure formed by a plurality of strips with different dielectric constants and extend from the middle of the strip straight line array to the two ends, and the dielectric constants of the strips are gradually reduced. The planar waveguide CTS antenna broadband feeding line source has the advantages of small structural size, wide frequency band and favorable matching performance, is easy to produce, adjust and assemble, and can be applicable for planar waveguide CTS antenna feeding.

Description

technical field [0001] The invention belongs to the technical field of antennas and feed sources, and relates to a broadband line source that converts a cylindrical wave front generated by an H-plane horn into a plane wave front and outputs it through a planar dielectric lens, so as to realize power feeding to a planar waveguide CTS antenna. Background technique [0002] In the field of communication applications, high-performance antennas with wide frequency band and low profile have always been the goal pursued by antenna designers. Especially for space-borne antennas, the wide frequency band can enable the antenna to work in multiple frequency bands and achieve multi-functional multiplexing; the low profile can greatly reduce the cost of satellite launch. Therefore, it is an important task to propose a low-cost high-performance antenna that can be applied in the field of broadband communication. The desired characteristics include: wide frequency band, low mechanical prof...

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Problems solved by technology

[0010] In order to overcome the defects in the prior art, the present invention provides a slab waveguide CTS antenna broadband feeder source based on a planar dielectric lens, which is used to solve the problem that the existing slab waveguide CTS antenna feeder source cannot simultaneously realize miniaturization and broadband Belt and good matching and difficulty in processing and assembly

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