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Antenna and communication system

An antenna and output signal technology, which is applied in the direction of antenna, antenna grounding switch structure connection, radiation element structure, etc., can solve the problem that the circular polarization performance of satellites cannot be completely covered, and achieve good circular polarization characteristics and good impedance bandwidth. Effect

Inactive Publication Date: 2017-03-22
XIAN UNISTRONG NAVIGATION TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The present invention provides an antenna and a communication system to solve the problem in the prior art that satellites in all frequency bands of the upper hemisphere cannot be completely covered and the circular polarization performance is poor

Method used

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  • Antenna and communication system
  • Antenna and communication system
  • Antenna and communication system

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Embodiment Construction

[0034] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] The invention provides an antenna to solve the problem in the prior art that satellites in all frequency bands of the upper hemisphere cannot be completely covered and the performance of circular polarization is poor.

[0036] Specifically, the antenna, such as figure 1 As shown, it includes: reflector 101, upper radiation surface 102, lower radiation surface 103 and feed network 104; where:

[0037] Both the upper radiating surface 102 and the lower radiating surface 103 are center-symmetrical, and the center points of the upper radiating surface 102 and the lower radiating surface 103 are fixedly connected to the reflecting plate 101 through structural members respectively, and the upper radiating surface 102 and the lower rad...

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Abstract

The invention provides an antenna and a communication system. For paths of output signals of a feeding network are all coupled to a lower radiation surface through air firstly, and then coupled to an upper radiation surface through the lower radiation surface via air, so that the antenna has high impedance bandwidth, and the requirement of a full-frequency-band coverage satellite is satisfied; and in addition, the amplitudes of the four paths of output signals output by the four right-ward 7-shaped probes of the feeding network are equivalent, and the phase difference is 90 degrees in sequence, so that the antenna has good circular polarization feature.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to an antenna and a communication system. Background technique [0002] In recent years, satellite navigation and positioning systems have been more and more widely used. Since the antenna is one of the most critical components in the satellite navigation and positioning system and plays a pivotal role, the communication system and its antennas have also developed rapidly. [0003] Since the antenna needs to receive signals from multiple navigation and positioning satellites to perform navigation and positioning calculations, and the satellite signals are relatively weak, in order to receive as many satellite signals as possible and obtain a good signal-to-noise ratio, it is required that the satellites can be seen The antenna has a uniform amplitude response to all satellite signals and a pattern with wide beam characteristics over the entire upper hemisphere. At the same time, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/50H01Q15/24H01Q1/36H01Q19/10
CPCH01Q1/50H01Q1/36H01Q15/24H01Q19/104
Inventor 马冰
Owner XIAN UNISTRONG NAVIGATION TECH CO LTD
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