Multi-layer three-dimension suspending unidirectional broadband circle polarized millimeter wave plane gap antenna

Abstract

The invention is concerned with a kind of multi-layer three-dimensional impending unilateralism and broad-band entelechy millimeter wave plane gap antenna, belonging to communication technology field, relating to circular metal gap inducting layer, microwave medium layer, entelechy gap radiation unit for coplanar wave-guide feeding, supporting layer and circular metal gap layer to cut off reflection of wave-guide. The circular metal gap inducting layer sets on a side of microwave medium layer, while entelechy gap radiation unit, circular metal gap layer and supporting layer are on the other side. The entelechy gap radiation unit for coplanar wave-guide feeding connects with microwave medium layer, and circular metal gap layer to cut off reflection of wave-guide connects with entelechy gap radiation unit for coplanar wave-guide feeding through the supporting layer. This invention is easy to adjust the size of coplanar wave-guide feeding to match with impedance and to prepare. It reaches the demand of entelechy and broad-band, unilateralism radiation and enhances plus of antenna remarkably.

Description

technical field [0001] The invention relates to an antenna in the technical field of communication, in particular to a unidirectional broadband circularly polarized millimeter-wave planar slot antenna with a multi-layer three-dimensional suspended structure. Background technique [0002] With the development of satellite communications and the increasingly crowded radio channels, radio technology is developing towards shorter and shorter millimeter waves and submillimeter waves. Millimeter wave has the characteristics of extremely wide bandwidth, high resolution, and all-weather operation. The size of millimeter wave components is small, and it is easier to miniaturize and integrate. Therefore, millimeter wave technology has a wide range of applications in military, communication, security and other fields. But traditional antennas have encountered new difficulties in the millimeter wave band. First of all, with the increase of frequency, the requirements for processing ac...

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Problems solved by technology

[0004] After searching the literature of the prior art, it was found that "Broadband CPW-Fed Square Slot Antennas" published by H.D. Chen in "Antennas and Propagation Progress" ("IEEE Transactions on Antennas and Propagation" VOL 51, 2003, pages 1982-1986) With a Widened TuningStub" ("coplanar waveguide fed wideband rectangular slot antenna with bandwidth adjustment branch"), this paper proposes to use a rectangular wide slot as the radiation element and add an adjustment branch to achieve a 60% bandwidth, but its The disadvantage is that due to the characteristics of the film slot antenna radiating from the slot, the antenna generally radiates in two directions, the gain is low, and circular polarization is not realized.

However, practice shows that simply adding a reflective ground plate to achieve unidirectional radiation will greatly affect the bandwidth, reflection loss and other performance of the antenna.

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