Dual-frequency broadband differential antenna

An antenna and frequency difference technology, applied in the field of dual-frequency, signal transceiver antenna, broadband differential antenna, can solve the problem of narrow impedance bandwidth, etc., to achieve the effect of working frequency bandwidth, signal interference suppression, pattern symmetry

Active Publication Date: 2015-07-15
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the impedance bandwidth of existing dual-frequency differential antennas is generally narrow

Method used

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  • Dual-frequency broadband differential antenna
  • Dual-frequency broadband differential antenna
  • Dual-frequency broadband differential antenna

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0031] figure 1 A schematic diagram of a three-dimensional structure of the broadband dual-frequency differential antenna of the present invention is shown.

[0032] figure 2 A front view of the broadband dual-band differential antenna of the present invention is shown.

[0033] Such as figure 1 and figure 2 As shown, the broadband dual-frequency differential antenna of the present invention includes the following ...

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Abstract

The invention discloses a dual-frequency broadband differential antenna which comprises a radiation sheet (1), U-type grooves (2), a medium plate (3), a feed portion (4), an inner conductor, an earth plate (5) and an antenna interface (6). The radiation sheet (1) is used for emitting electromagnetic wave energy; the U-type grooves (2) are roughly and symmetrically arranged on the two side edges of the radiation sheet (1) in parallel; the medium plate (3) is used for carrying the radiation sheet (1); the feed portion (4) is used for supplying signal feed to the radiation sheet (1); the inner conductor of the antenna interface (6) is connected to the earth plate (5); the earth plate (5) is used for carrying an antenna body and supplying grounding signals; the antenna interface (6) is used for inputting differential signals. The dual-frequency broadband differential antenna is simple in structure, symmetrical in directional diagram, wide in working band, low in cross polarization and large in gain, thereby having good popularization prospects.

Description

technical field [0001] The invention relates to a dual-frequency, wide-band differential antenna, specifically, to a signal transmitting and receiving antenna applicable to a dual-frequency differential system, and belongs to the technical field of communication antennas. Background technique [0002] Because the differential circuit has the advantages of high linearity, strong anti-interference performance, large dynamic range and harmonic suppression, it is widely used in radio frequency communication systems. The application of the differential circuit improves the common-mode rejection of the signal and the suppression of interference, and can improve the performance index of the radio frequency signal. [0003] In the prior art, most antenna designs adopt a single-port design scheme. If a single-port antenna is applied to a differential system, an additional balun, that is, a balun, needs to be connected to realize the conversion from a single-port to a dual-port . On...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/48H01Q13/10
Inventor 吴永乐廖梦笔苏明刘元安黎淑兰于翠屏
Owner BEIJING UNIV OF POSTS & TELECOMM
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