A Vertically Feed Dual-Band Filter Patch Antenna
A technology of vertical feeding and patch antennas, which is applied in the direction of leaky waveguide antennas, antennas, resonant antennas, etc., can solve the problems of reduced filter antenna efficiency and large space occupation, and achieves improved gain roll-off rate, increased efficiency, and occupied size small effect
Active Publication Date: 2021-06-15
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0004] The purpose of the embodiments of the present invention is to provide a vertically fed dual-frequency filter patch antenna to solve the problem that the matching circuit connecting the antenna and the filter in the prior art occupies a large space and introduces additional insertion loss. Technical problems that reduce the efficiency of the entire filter antenna
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[0045] 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.
[0046]Aiming at the problem that the matching circuit connecting the antenna and the filter in the prior art takes up a large space and introduces additional insertion loss, which reduces the efficiency of the entire filter antenna, the embodiment of the present invention provides a vertically fed dual-band The filter patch antenna adopts a rectangular single patch and a single-layer feed network to realize a patch antenna with dual-band operation, and a single...
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An embodiment of the present invention provides a vertically fed dual-band filter patch antenna, using a rectangular single patch and a single-layer feed network, a patch antenna that works in dual frequency bands can be realized, and the dual frequency band work It is completely realized through the feed network, without additional increase in the size of the patch antenna; by adding a stub line on the back of the CPW, and opening U-shaped, L-shaped, and straight slots on the patch, the lower edge of the low-frequency band can , The upper edge of the high-frequency band, and the lower edge of the high-frequency band add three radiation zero points, which improves the gain roll-off rate of the patch antenna, so that both frequency bands have filtering performance. In addition, the embodiment of the present invention integrates the filtering function into the components of the patch antenna, and the signal transmission in the patch antenna does not require a matching circuit, which reduces the space occupied by the matching circuit of the entire filter patch antenna, and does not introduce The additional insertion loss increases the efficiency of the entire filter patch antenna.
Description
technical field [0001] The invention relates to the field of electrical technology, in particular to a vertically fed dual-frequency filter patch antenna. Background technique [0002] As wireless communication systems continue to evolve, so do RF front-end devices. As one of the important representatives of this trend, the filter antenna in the RF front-end device is composed of a filter and an antenna. Therefore, the filter and the antenna are used as RF front-end devices, and their performance directly affects the performance of the entire wireless communication system to a certain extent. The antenna is essentially an energy converter, which transmits the guided wave on the antenna transmission circuit into an electromagnetic wave that can propagate in space, or receives the electromagnetic wave propagated in space into a guided wave on the antenna transmission circuit. The filter is a key device for filtering out clutter on the antenna transmission circuit, which can ...
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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50H01Q5/307H01Q5/314H01Q9/04H01Q13/22
CPCH01Q1/36H01Q1/38H01Q1/50H01Q9/0407H01Q13/22H01Q5/307H01Q5/314
Inventor 吴永乐刘星宇王卫民
Owner BEIJING UNIV OF POSTS & TELECOMM