S-waveband communication-in-motion double-frequency circularly polarized micro-strip antenna and array thereof

A technology of microstrip antenna and communication in motion, which is applied to the combination of antenna units, antennas, and radiating element structures with different polarization directions. Effect
CN104993245AInactive Publication Date: 2015-10-21常州吉赫射频电子技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
常州吉赫射频电子技术有限公司
Publication Date
2015-10-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an S-waveband communication-in-motion double-frequency circularly polarized micro-strip antenna and an array thereof. The micro-strip antenna includes a metal floor, a dielectric substrate, a radiation metal sheet, a parasitic metal sheet and a micro-strip feeder line, and the micro-strip antenna array includes a metal floor, a dielectric substrate, a radiation metal sheet, a parasitic metal sheet and a micro-strip feed network. The S-waveband double-frequency circularly polarized micro-strip antenna and the array thereof introduces the parasitic element on the basis of a traditional double-fed circularly polarized micro-strip antenna and an array thereof, thereby greatly expanding the working bandwidth, and enabling excellent impedance characteristic and radiation characteristic to be realized in a double-frequency-band range of uplink 1.98 to 2.01 GHz and downlink 2.17 to 2.20 GHz of an S waveband.
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Description

technical field

[0001] The invention relates to an S-band moving-in-motion dual-frequency circularly polarized microstrip antenna and an array thereof. Background technique

[0002] Mobile Communication is the abbreviation of "Moving Satellite Ground Station Communication System". In the satellite communication antenna system, the multi-frequency antenna can improve the communication capacity and reduce the construction cost of the ground station, so it is widely used. Compared with the traditional parabolic antenna, the microstrip antenna has many advantages such as low profile, light weight, easy processing, easy array formation, and low cost. It can realize multi-polarization working mode by rationally designing the radiation unit structure and feeding mode; however , usually, the impedance bandwidth of the microstrip antenna is very narrow (2-4%), which severely limits its application in the field of multi-frequency / broadband communication. Contents of the invention ...

Claims

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