Double-frequency navigation antenna with high isolation
A high isolation, antenna technology, applied in the direction of antenna, antenna coupling, independent antenna unit combination, etc., can solve problems such as poor transceiver isolation
Inactive Publication Date: 2013-07-24
武汉基数星通信科技有限公司
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Problems solved by technology
[0006] In order to improve and ensure the good radiation characteristics of the dual-band antenna, the present invention adopts the coaxial stacking scheme of the two-band radiators. To solve the problem of poor accuracy, a high-performance high-isolation dual-frequency navigation antenna is proposed to meet the radiation characteristics required by satellite navigation systems and provide high-performance antenna modules for satellite navigation user equipment
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[0025] see figure 1 , The high-isolation dual-frequency navigation antenna is composed of a high-frequency antenna radiator 1, a low-frequency antenna radiator 2, and a cavity 3. The high-frequency antenna radiator 1 and the low-frequency antenna radiator 2 are welded together by soldering. The radiator 2 of the low frequency band antenna is connected with the cavity through screws 221 . The high-frequency and low-frequency bands respectively have a connector fixed on the cavity.
[0026] see figure 2 The radiator 1 of the high-frequency antenna is a centrally fed circularly polarized microstrip antenna. The radiator 1 of the high-frequency antenna adopts a dielectric material with a dielectric constant of 6.15 and a thickness of 3 mm. The radiator 1 of the high-frequency antenna is printed on the upper and lower sides. There are radiation patches 11 and a floor 14 . The antenna radiator 1 adopts a radiation patch 11 with a special shape, so that the high-frequency radiat...
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The invention belongs to the technical field of wireless communication navigation and antennas, and particularly relates to a double-frequency navigation antenna with high isolation. The antenna comprises a high-frequency section antenna radiating body (1), a low-frequency section antenna radiating body (2) and a cavity (3), wherein the high-frequency section antenna radiating body (1) and the low-frequency section antenna radiating body (2) are welded together through soldering tin, and the low-frequency section antenna radiating body (2) and the cavity (3) are connected together through a screw (221). The antenna solves the problem of receiving and sending isolation differences of two frequency sections produced after the high-frequency section antenna radiating body and the low-frequency section antenna radiating body are stacked together, conforms to radiation characteristics needed by a satellite navigation system, and therefore can provide a high-performance antenna module for satellite navigation user machine equipment.
Description
technical field [0001] The invention belongs to the technical field of wireless communication navigation and antenna, in particular to a high-isolation dual-frequency navigation antenna with high-performance antenna design, high antenna isolation, and dual-frequency technology. The navigation antenna is used for miniaturized or vehicle-mounted satellite navigation Ground application system user machine equipment, etc. Background technique [0002] The miniaturized navigation antenna is a research hotspot of various foreign satellite navigation antenna manufacturers in recent years, and the multi-mode and multi-frequency GNSS receiver equipped by it is a major trend in the development of satellite navigation receivers. There are more and more satellite navigation constellations that can be received in the future, including GPS, Beidou, GLONASS, and Galileo. The number of satellites that can be used by multi-mode multi-frequency satellite navigation receivers has doubled, whi...
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IPC IPC(8): H01Q1/52H01Q1/36H01Q1/38H01Q13/08H01Q21/30H01Q1/12
Inventor 徐云学李德识范创伟袁海林毋国华
Owner 武汉基数星通信科技有限公司