Double-cross broadband high/ low-elevation-angle gain satellite navigation terminal antenna
A satellite navigation and terminal antenna technology, applied in the field of dual cross-shaped broadband high and low elevation gain satellite navigation terminal antennas, can solve problems such as increasing system complexity, achieve enhanced directivity and elevation gain, good directivity, and low Effect of Elevation Gain
Pending Publication Date: 2019-09-20
FUZHOU UNIV
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Problems solved by technology
Its omnidirectional port can provide a gain of about 1 dBic θ = 90°, increasing system complexity due to its dual-port structure
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[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0020] The invention provides a double cross-shaped broadband high and low elevation angle gain satellite navigation terminal antenna, such as figure 1 As shown, it includes a first medium plate 1, a second medium plate 2, a third medium plate 3, a fourth medium plate 4 and a fence-like medium plate 5, the first medium plate 1 and the second medium plate 2 are arranged parallel up and down, and the second medium plate The three dielectric plates 3 and the fourth dielectric plate 4 cross and are vertically arranged between the first dielectric plate 1 and the second dielectric plate 2. The upper surface of the first dielectric plate 1 is printed with two pairs of self-phase-shifted dipole arms. 6, the front surfaces of the third dielectric plate 3 and the fourth dielectric plate 4 are printed with radiation patches with dipole arms, so...
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The invention relates to a double-cross broadband high / low-elevation-angle gain satellite navigation terminal antenna, which comprises first, second, third and fourth dielectric plates and fence type dielectric plate. The first and second dielectric plates are arranged up and down in parallel; the third and fourth dielectric plates cross and are vertically arranged between the first and second dielectric plates; a radiation patch formed by two pairs of self-phase-shift dipole arms is printed on the upper surface of the first dielectric plate; a radiation patch having a dipole arm is printed on the front surfaces of the third and fourth dielectric plates to form cross dipole arms; feeder lines are printed on the back surfaces of the third and fourth dielectric plates respectively; the radiation patches are connected with feeder lines through probes; the self-phase-shift dipole arms are connected with the cross dipole arms through probes; the lower side surface of the second dielectric plate is provided with a feed network; the feeder lines are connected with the feed network through a probe; the fence type dielectric plate is arranged around the second dielectric plate; and the fence type dielectric plate is provided with a plurality of gaps. The antenna structure is beneficial to enhance directivity and low elevation gain of the antenna.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a double cross-shaped broadband high and low elevation angle gain satellite navigation terminal antenna. Background technique [0002] Global Positioning System (GPS) has been a hot research topic due to its wide applications such as positioning, navigation and clock synchronization. Typically, GPS antennas require high antenna gain with right-hand circular polarization (RHCP), wide beamwidth, and low elevation angles. A GPS receiver needs to receive signals from at least four satellites to determine a 3D position. Wideband antennas can effectively increase coverage and receive signals even at low elevation angles. The prior art has investigated different circularly polarized (CP) antennas for GPS applications. For example, quadrifilar helical antennas, which provide a very broad cardioid radiation pattern, are widely used. The shape of the radiation pattern ca...
Claims
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IPC IPC(8): H01Q1/38H01Q1/50H01Q9/16H01Q9/26H01Q19/02
CPCH01Q1/38H01Q1/50H01Q9/16H01Q9/26H01Q19/02
Inventor 袁家德巩若晨
Owner FUZHOU UNIV