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Broadband magnetoelectric dipole filtering antenna

A filter antenna and dipole technology, which is applied in the field of radio frequency communication, can solve the problems of inability to have out-of-band suppression level, and achieve the effects of good out-of-band suppression level, good edge selectivity, and high edge filtering effect

Active Publication Date: 2020-11-03
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a broadband magnetoelectric dipole filter antenna, aiming to solve the problem that the existing magnetoelectric dipole cannot have a good level of out-of-band suppression

Method used

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Embodiment Construction

[0018] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0019] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive ...

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Abstract

The invention discloses a broadband magnetoelectric dipole filtering antenna, which is characterized in that a pair of patches which are horizontally arranged and vertically grounded are respectivelyused as an electric dipole and a magnetic dipole, the edges of the horizontal patches and the vertical patches are connected to form a magnetoelectric dipole antenna, and a copper bar is folded into an inverted L shape and is arranged between short-circuit patches to form a feeder line; signals are transmitted to the feeders through SMA on the floor and coupled to the horizontal patch and the vertical patch; antenna impedance matching is enhanced by loading parallel branches between vertical parts of the feeders, so that relative bandwidth and passband edge selectivity are improved; a radiation zero point is introduced to an out-of-band high-frequency position by loading open circuit branches at vertical long ends of the feeders; the surface current flow direction of the patch is changed by forming the rectangular groove in the horizontal patch, and the radiation zero point is introduced at the out-of-band high frequency, so that higher harmonics are effectively suppressed, and the out-of-band suppression level of the antenna is enhanced. The out-of-band rejection level of the antenna is improved on the premise of ensuring a stable radiation pattern, wide bandwidth, low back lobe radiation and low cross polarization, so that the antenna is suitable for a modern wireless communication system.

Description

technical field [0001] The invention relates to the field of radio frequency communication, in particular to a broadband magnetoelectric dipole filter antenna. Background technique [0002] With the rapid development of wireless communication technology in recent years, electronic systems are developing in the direction of low power consumption, multi-function and integration. Corresponding to this trend, filter antennas with specified radiation function and good frequency selectivity have received more and more attention. In 2006, Kwai-Man Luk designed a complementary antenna, using the duality of the magnetic dipole and the electric dipole to place it orthogonally, so that the antenna has almost the same pattern on the E plane and the H plane , this antenna has a stable radiation pattern, wide bandwidth, low backlobe radiation, low cross-polarization, stable gain in the operating frequency band, etc., but the out-of-band suppression level of this antenna needs to be impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/48H01Q1/50
CPCH01Q1/36H01Q1/48H01Q1/50Y02D30/70
Inventor 邵蔚李贺王建朋吴文
Owner NANJING UNIV OF SCI & TECH
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