Microstrip dual-mode feed network for four-port antenna

A feeder network, four-port technology, applied in the field of microstrip dual-mode feeder networks, can solve performance and application range limitations, and achieve the effects of reducing cross-polarization, improving isolation, and expanding bandwidth

Inactive Publication Date: 2011-12-14
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the use of single-mode feed, the performance and application range of the four-port antenna will be limited to a certain extent.

Method used

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  • Microstrip dual-mode feed network for four-port antenna
  • Microstrip dual-mode feed network for four-port antenna
  • Microstrip dual-mode feed network for four-port antenna

Examples

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Embodiment Construction

[0024] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0025] Such as Figure 1-3 As shown, this embodiment includes: a first dual-mode sub-network 1 and a second dual-mode sub-network 13 that are relatively arranged, wherein:

[0026] The first dual-mode sub-network 1 includes: a first broadband balun 2, a first power divider 3, a diode switch 4-7, a first microstrip line 8 and a second microstrip line 9, wherein: the first A broadband balun 2 and the first power divider 3 are respectively connected to the first microstrip line 8 through the third diode switch 6 and the fourth diode switch 7, and connected to the first microstrip line 8 through the first diode switch...

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Abstract

The invention discloses a microstrip bimodule feed network of an antenna with four ports and belongs to the technical field of wireless radars. The network comprises a first bimodule sub network and a second bimodule sub network which are arranged opposite; the first bimodule sub network comprises a wide band balun, a power divider, a first microstrip line and a second microstrip line; the secondbimodule sub network comprises a wide band balun, a power divider, a third microstrip line and a fourth microstrip line. According to the invention, bimodule feed of a miniaturized antenna with four ports is realized so as to further expand the bandwidth of the antenna and improve the isolation of an input port within a wider frequency band range.

Description

technical field [0001] The invention relates to a device in the technical field of wireless radar, in particular to a microstrip dual-mode feeding network of a four-port antenna. Background technique [0002] With the rapid development of communication technology and the extensive application of precision-guided weapons on the modern battlefield, the development of advanced antenna detection technology has become an important measure to improve the survivability of combat platforms. Some communication systems require the antenna to have wide impedance bandwidth, high dual linear polarization isolation, and non-center feeding characteristics while being miniaturized. Traditional planar antennas are limited in application because they cannot meet the above requirements. The proposal of the port antenna provides an effective solution to this problem. [0003] After searching the literature of the prior art, it is found that the patent publication number CN101587984A discloses ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q23/00
Inventor 彭宏利任思伟毛军发尹文言
Owner SHANGHAI JIAO TONG UNIV
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