Bridging type dual-frequency microstrip antenna with interdigital coupling control
A technology of coupling control and microstrip antenna, which is applied to antennas, resonant antennas, and devices that enable antennas to work in different bands at the same time, to achieve high phase center stability, convenient adjustment of feed point positions, and good phase and gain effects.
Active Publication Date: 2015-07-01
XIAMEN UNIV
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Problems solved by technology
[0009] At present, the double-feed dual-frequency microstrip antenna using the L-shaped interdigitated slot coupling technology has not been reported yet.
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[0026] The present invention will be further described below in conjunction with drawings and embodiments.
[0027] see Figure 1~3 , this embodiment is provided with a grounding plate 1, a dielectric substrate 2, and a radiation patch 3 from bottom to top; the grounding plate 1 is a copper plate, the dielectric substrate 2 is a ceramic plate, and the radiation patch 3 is a copper radiation patch. The radiation patch 3 is provided with two left-right symmetrical feed holes, and feed terminals 8 are respectively provided on the two feed holes, and the inner core 9 of the coaxial line passes through the dielectric substrate 2 to connect with the radiation patch 3, and the coaxial line The outer core (not shown) is connected to the ground plate 1; the shape of the radiation patch 3 is square, and the four corners of the radiation patch 3 are provided with L-shaped slots 31 with interdigitated fingers, and L-shaped slots with interdigitated fingers The inside and outside of 31 ar...
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A bridging type dual-frequency microstrip antenna with interdigital coupling control relates to a dual-frequency microstrip antenna. The bridging type dual-frequency microstrip antenna is provided with an earth plate, a dielectric substrate and a radiation patch from the bottom up; the earth plate is a conductor, the radiation patch is a metal radiation patch, and is provided with a left feed hole and a right feed hole which are symmetrical, feed terminals are respectively arranged on the two feed holes, and the radiation patch is connected with the dielectric substrate through coaxial cable cores passing through the feed holes; the radiation patch is square, the four corners of the radiation patch are respectively provided with an L-shaped interdigital slot, both the inner side and outer side of each L-shaped interdigital slot are provided with interdigitals which are arranged at intervals, interdigitals arranged on the inner sides of the L-shaped interdigital slots compose an inner-frame interdigital square coupled array, interdigitals arranged on the outer sides of the L-shaped interdigital slots compose an outer-frame interdigital square coupled array, the adjacent L-shaped interdigital slots are bridged, and with the four L-shaped interdigital slots as a boundary, the radiation patch forms an inner frame and an outer frame, i.e., the radiation patch forms a double-feed double-frame structure.
Description
technical field [0001] The invention relates to a dual-frequency microstrip antenna, in particular to a bridge-type cross-connected dual-frequency microstrip antenna with interdigital control, which can be applied to the Beidou satellite navigation system. Background technique [0002] BeiDou (COMPASS) Navigation Satellite System (BeiDou (COMPASS) Navigation Satellite System) is a global satellite navigation and positioning system independently developed and operated by my country, and is compatible with the GPS of the United States, GLONASS of Russia, and Galileo of the European Union The system can not only provide high-precision and high-reliability positioning, navigation and timing services, but also has the characteristics of short message communication, differential service and integrity service. [0003] The space segment of the Beidou satellite navigation system under construction consists of 5 geostationary orbit satellites and 30 non-geostationary orbit satellites,...
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IPC IPC(8): H01Q9/04H01Q5/10
Inventor 游佰强薛团辉李杰周建华
Owner XIAMEN UNIV