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Power feed stacked microstrip antenna array with circular polarized wide-band capacitor compensating probe

A capacitance compensation, microstrip antenna technology, applied to antenna unit combinations, antennas, electrical components and other directions with different polarization directions to achieve good consistency

Inactive Publication Date: 2008-11-19
SPACE STAR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Comprehensive use of capacitance compensation, stacked structure and low dielectric constant technology to broaden the bandwidth of microstrip antenna has not been reported in the literature

Method used

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  • Power feed stacked microstrip antenna array with circular polarized wide-band capacitor compensating probe
  • Power feed stacked microstrip antenna array with circular polarized wide-band capacitor compensating probe
  • Power feed stacked microstrip antenna array with circular polarized wide-band capacitor compensating probe

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with accompanying drawing.

[0045] Such as figure 1As shown, the circularly polarized broadband capacitance compensation probe-fed stacked microstrip antenna array includes a radome 1, two layers of dielectric substrates, two layers of support, a feed network 5 and a feed cable 6; the main two-layer support The role is to support and fasten the microwave dielectric substrate, and the feed network 5 is used to distribute power to the two microstrip antenna units and realize circular polarization.

[0046] Such as figure 2 , image 3 , Figure 4 As shown, there is a parasitic patch 21 on the inner side of the first dielectric substrate 2 ; the feeding patch 31 is on the top of the second dielectric substrate 3 , and the capacitance compensation metal patch 32 is on the bottom. Inside the radome 1, from left to right are the first dielectric substrate 2, the first support 4a, the second dielectric s...

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Abstract

Disclosed is a circularly polarized stacked microstrip antenna array with broad band, capacitance compensation, which is fed through a probe. A first medium substrate(2), a first support(4a), a second medium substrate(3), a second support(4b), a feed-in network(5), a feed-in cable(6) and a feed-in metal probe(33)are sequentially arranged inside an antenna shield. An parasitic appended patch(21) is arranged at the inner side of the first medium substrate; one side of the second medium substrate, which contacts with the first support(4a), is provided with a feed-in appended patch(31) and the other side is provided with a capacitance compensation metal appended patch(32); the output port of the feed-in network(5) is connected with the feed-in cable(6); the feed-in network(5) is welded with the feed-in metal probe(33)through the capacitance compensation metal appended patch(32). The invention introduces capacitance compensation, laminated structure and low dielectric constant to broaden the bandwidth of the microstrip antenna, making the relative bandwidth of the antenna reaching up to 20% and circular polarization ratio be less than 3dB within the range of the broadband.

Description

technical field [0001] The invention relates to the antenna technology in the field of wireless communication, especially for occasions with high requirements on broadband characteristics and circular polarization characteristics. Background technique [0002] Microstrip antenna has many advantages such as low profile and easy mass production, but its inherent narrow-band characteristics (generally, the relative bandwidth is less than 5%) limit its application range. When the microstrip antenna is formed into an array in a certain way, the gain can be increased, but due to the influence of unideal factors such as the feed network, the frequency band of the antenna array is narrower than that of the array units. At the same time, because the use of linearly polarized antennas on high-speed dynamic carriers will cause greater signal attenuation, circularly polarized antennas have obvious advantages in the application of mobile carriers. [0003] After patent retrieval, the re...

Claims

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Application Information

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IPC IPC(8): H01Q21/24H01Q13/08H01Q1/38
Inventor 董涛李景贵葛琳李时良张胜辉
Owner SPACE STAR TECH CO LTD
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