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Multi-frequency multi-mode handset navigation antenna

A technology for handsets and antennas, applied to antennas, antenna components, antenna supports/mounting devices, etc., can solve the problems of not being able to meet the needs of receiving antennas, not suitable for miniaturization, etc., to ensure circular polarization characteristics and improve input impedance Compared with the circular polarization axis, the bandwidth and the effect of reducing the size of the antenna

Inactive Publication Date: 2016-07-20
BEIJING INST OF AEROSPACE CONTROL DEVICES
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  • Description
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AI Technical Summary

Problems solved by technology

Ordinary microstrip patch antennas have the advantages of cardioid pattern, low loss, low profile, light weight, and easy conformality, etc., but their beamwidth is generally around 80°, and the gain is in the Between -10 and -7dB, it cannot meet the hemispherical coverage pattern characteristics required by the receiving antenna
The quadrifilar helical antenna, conical helical antenna and crossed dipole antenna are generally large and not suitable for miniaturization

Method used

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  • Multi-frequency multi-mode handset navigation antenna
  • Multi-frequency multi-mode handset navigation antenna
  • Multi-frequency multi-mode handset navigation antenna

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0029] In order to meet the transmission requirements of Beidou B1 frequency point and RDSS-L frequency point, as well as the reception requirements of S frequency point, and solve the contradiction between antenna miniaturization and low elevation gain, the present invention proposes a multi-frequency multi-mode handheld Aircraft navigation antenna, the antenna adopts a laminated structure, and the antenna type is a microstrip patch antenna. Three microstrip patch antennas working at different frequencies are stacked together according to the center of symmetry. board surface. The B1 antenna and the L antenna use double feed points to feed the microstrip patch antenna to excite a pair of degenerate modes with orthogonal polarizations to form circularly polarized waves; the S antenna uses a single feed point method, combining Circular polarizat...

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Abstract

The invention discloses a multi-frequency multi-mode handset navigation antenna, which has transmitting functions of Big Dipper B1 frequency point and an RDSS-L frequency point and a receiving function of an S frequency point, wherein the laminated structure is adopted by the antenna; the dimension of the antenna can be effectively reduced by a high-order electric composite microwave dielectric material; the dielectric surface wave can expand the beam width of the microstrip antenna; the microstrip antenna is fed with a plurality of feeds; a feed network ensures the circular polarization property of the antenna; the input impedance and the circular polarization axial ratio bandwidth can be effectively improved; the circular polarization characteristics of the antenna are ensured; and the multi-frequency multi-mode handset navigation antenna has a high-stability antenna phase center.

Description

technical field [0001] The invention relates to the technical field of handheld navigation antennas, in particular to a multi-frequency and multi-mode handheld navigation antenna, which can be matched with a multi-mode multi-frequency handheld OEM board and applied to handheld miniaturized navigation terminals. Background technique [0002] As an indispensable part of the navigation and positioning system, the antenna determines the performance of the navigation and positioning system. For the user receiver in the global positioning system, in order to ensure the positioning accuracy, the more satellites on the ground plane can be received, the better. satellite signal. Therefore, the antenna should have a uniform response to the satellite signal in this space. When it is lower than the receiving altitude, in order to suppress the serious multipath effect and tropospheric effect, the antenna response needs to be cut off quickly. higher requirements. In addition, the navig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/28H01Q1/50H01Q1/38H01Q1/24
CPCH01Q21/28H01Q1/243H01Q1/38H01Q1/50
Inventor 袁唐杰孔令兵杨春华胡常青杨勇曾笑尘吴垣春张松
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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