Multi-mode satellite positioning navigation terminal antenna
A technology for positioning navigation and terminal antennas, applied to antennas, antennas suitable for movable objects, beacon systems using radio waves, etc., can solve the problem of not being able to apply microstrip patch antennas, and not improving Low elevation angle gain and other issues, to achieve the effect of low cost, high low elevation gain, and good circular polarization performance
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[0034] like Figure 1 to Figure 4 As shown, the multi-mode satellite positioning and navigation terminal antenna of the present invention includes a laminated microstrip patch antenna 2, a broadband orthogonal feed network 3 and a connection probe 4; the laminated microstrip patch antenna 2 includes a capacitor plate 21, an upper layer patch Sheet 22, lower patch 23, ground 24, dielectric substrate 25, compensating air layer 26 and protection hole 27 (such as figure 2 shown); the upper patch 22 is coupled and fed through the capacitor plate 21, and works in the high frequency band (1559-1610MHz), and is used to receive satellite positioning and navigation signals near the L1 frequency band; the lower patch 23 is coupled and fed through the upper patch 22 , working in the low frequency band (1164-1239MHz), used to receive satellite positioning and navigation signals near the L2 and L5 frequency bands. A coupling capacitor is formed between the capacitive plate 21 and the uppe...
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