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Composite slit leading dual-band and double-fed microstrip antenna with low elevation and high gain

A technology of microstrip antenna and low elevation angle, which is applied to the antenna, the device that enables the antenna to work in different bands at the same time, the structural form of the radiation element, etc., can solve the problems of small gain and difficulty in achieving low elevation angle gain, achieve high gain, improve Low elevation angle performance, the effect of reducing the operating frequency of the antenna

Inactive Publication Date: 2013-11-20
XIAMEN UNIV
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Problems solved by technology

However, the beamwidth of ordinary microstrip antennas is generally only about 90 degrees, and the gain at an elevation angle of 10 degrees is relatively small (generally below 8dB), and it is difficult to optimize the gain at low elevation angles

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  • Composite slit leading dual-band and double-fed microstrip antenna with low elevation and high gain
  • Composite slit leading dual-band and double-fed microstrip antenna with low elevation and high gain
  • Composite slit leading dual-band and double-fed microstrip antenna with low elevation and high gain

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Embodiment Construction

[0022] The technical solutions of the present invention and its outstanding effects will be further described below in conjunction with the embodiments and drawings.

[0023] See Figure 1~4 , The embodiment of the present invention is provided with an upper substrate 1 and a lower substrate 2. The upper surface of the upper substrate 1 is provided with an upper patch A, the upper patch A is a copper-clad layer with a rod and seam composite leading to the array structure, and the upper patch A There is an upper main microstrip patch 5, the upper main microstrip patch 5 adopts a symmetrical square cut corner structure 4, and the upper main microstrip patch 5 is provided with 4 symmetrical guiding slits 6, leading to the slits 6 and There is a gap at the edge of the upper main microstrip patch 5. There are 4 symmetrical rod slits on the outermost periphery of the upper main microstrip patch 5 to guide the vibrator 3, and a high frequency feed point is provided in the middle of the ...

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Abstract

The invention provides a composite slit leading dual-band and double-fed microstrip antenna with low elevation and high gain, and relates to a microstrip antenna. The microstrip antenna is provided with an upper substrate and a lower substrate, wherein an upper patch is arranged on the upper surface of the upper substrate and provided with a main upper microstrip patch which adopts an angularly symmetrical square chamfer structure; four symmetrical leading gaps are formed in the main upper microstrip patch, and four symmetrical slit leading vibrators are arranged on the outermost periphery of the main upper microstrip patch; an interlayer patch having the same structure with the upper patch is arranged between the upper substrate and the lower substrate and provided with a main interlayer microstrip patch which adopts the angularly symmetrical square chamfer structure; four symmetrical leading gaps are formed in the main interlayer microstrip patch, space is reserved between the four symmetrical leading gaps and the edges of the main interlayer microstrip patch, and four symmetrical rodlike leading vibrators are arranged on the periphery of the main interlayer microstrip patch; and a lower patch is arranged on the lower surface of the lower substrate, and a main lower microstrip patch is arranged on the lower patch.

Description

Technical field [0001] The invention relates to a microstrip antenna, in particular to a high-gain low-elevation dual-frequency double-fed miniaturized microstrip antenna used in a Beidou navigation system. Background technique [0002] BeiDou (COMPASS) Navigation Satellite System is an important research and development hotspot in China, with independent and high-precision navigation capabilities. At present, the Beidou satellite navigation system has become one of the four core suppliers recognized by the ICG (United Nations Satellite Navigation Committee), and has entered the international satellite navigation stage. The system will provide military and civilian users in China and surrounding areas with land, sea, and air navigation and positioning services, promote the application of satellite positioning, navigation, timing and communication services, and provide positioning and orbit determination methods for space users to meet weapon guidance and navigation The need for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q13/08H01Q5/00H01Q5/10H01Q5/20H01Q5/307
Inventor 周建华全威游佰强胡宝法
Owner XIAMEN UNIV
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