A Small Multi-Frequency Airborne Satellite Navigation Antenna
A satellite navigation antenna and antenna technology, which is applied in the direction of antenna, antenna grounding switch structure connection, antenna support/installation device, etc., can solve the problem that the positioning accuracy cannot meet the needs of users for high-precision positioning, achieve simple structure, improve axis Ratio characteristics, effect of improving radiation characteristics
Active Publication Date: 2019-11-29
BEIJING RES INST OF TELEMETRY +1
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Problems solved by technology
[0002] With the improvement of users' demand for satellite positioning accuracy, the positioning accuracy of the existing GPS satellite positioning system can no longer meet the needs of users for high-precision positioning
Method used
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Embodiment
[0053] 1. The height of feeder needle 1 is 14.7mm. The height of the compact 2 is 4.4 mm.
[0054] 2. The length of the radome 3 is 68mm, the width is 60mm, and the inner diameter is 32mm.
[0055] 3. The outer diameter of the GPS antenna printed board 4 is 38.4 mm, and the inner diameter is 12.5 mm; the length of the tuning teeth is 4 mm, and the width is 2.8 mm.
[0056] 4. The diameter of the first BD antenna printed board 5 is 46 mm, the length of the tuning teeth is 5.4 mm, and the width is 0.8 mm. The second BD antenna printed board 6 has an outer diameter of 5mm and an inner diameter of 2.6mm.
[0057] 5. The partition plate 7 and the radio frequency amplifying circuit board 8 have the same length and width, 66 mm in length and 58 mm in width. The thickness of the separator 7 is 0.5 mm.
[0058] 6. The size of the antenna of the whole machine is 95.82mm in length, 76.2mm in width, and the height direction does not exceed 25mm (excluding peripheral protruding parts s...
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Disclosed is a small-sized multi-frequency airborne satellite navigation antenna. The small-sized multi-frequency airborne satellite navigation antenna comprises a feed pin, a pressing block, an antenna cover, a GPS antenna printed board, a first BD antenna printed board, a second BD antenna printed board, an isolation board, a radio frequency amplifying circuit board, an antenna mounting framework, a connector assembly and a sleeve, wherein the feed pin runs through the GPS antenna printed board, the first BD antenna printed board, the second BD antenna printed board, the isolation board and the radio frequency amplifying circuit board and welded at the two ends; the sleeve selects CP-50 and is welded on the radio frequency amplifying circuit board; the welded assembly and the antenna cover are fixed on the antenna mounting framework by the pressing block and five screws; and an inner core of the TNC connector assembly is aligned and inserted into the sleeve CP-50 while the exterior of the connector assembly is tightly screwed to the antenna mounting framework through screw threads. The small-sized multi-frequency airborne satellite navigation antenna can realize multi-frequency operation and can cover satellite navigation frequency bands of GPSL1, L2, BDB1 and B3; and the small-sized multi-frequency airborne satellite navigation antenna is relatively wide in wave beam coverage range, high in gain, small in size, light in weight, free of debugging, and high in phase center stability, and can be widely applied to various kinds of positioning and measuring systems.
Description
technical field [0001] The invention relates to an antenna, in particular to a small multi-frequency airborne satellite navigation antenna, which belongs to the technical field of measuring antennas. Background technique [0002] With the improvement of users' demand for satellite positioning accuracy, the positioning accuracy of the existing GPS satellite positioning system can no longer meet the needs of users for high-precision positioning. As a key component in the satellite navigation and positioning system, high-precision positioning antenna technology has become an urgent problem to be solved. [0003] With the continuous improvement of the Beidou system, various applications are also increasing, and are developing in the direction of multi-system and multi-mode. The size, size, weight, functionality, and cost of satellite navigation antennas have increasingly become a comprehensive consideration for antenna designers. How to make the antenna smaller in size, lighte...
Claims
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IPC IPC(8): H01Q1/50H01Q1/38H01Q5/50H01Q5/28H01Q1/12
CPCH01Q1/12H01Q1/38H01Q1/50H01Q5/28H01Q5/50
Inventor 贾哲敏赵丽丽李靖
Owner BEIJING RES INST OF TELEMETRY
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