Low-profile circularly polarized GNSS antenna

In this article, we present a low‐profile and low cost antenna for GPS (L1–L2–L5), Galileo (E5–E1–E2), and Glonass (G1–G2) standard. This antenna is a dual‐feed planar patch antenna with four slots to achieve dual‐band operation. The radiating element is fed by a wideband 90° quadrature hybrid coupl...

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Bibliographic Details
Published in:Microwave and optical technology letters 2012-12, Vol.54 (12), p.2811-2814
Main Authors: Silva Pimenta, M., Ferrero, F., Staraj, R., Ribero, J.M.
Format: Article
Language:English
Subjects:
circular polarization
dual-band antenna
global navigation satellite systems antenna
slotted patch
three-branch-lines hybrid coupler
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Summary:In this article, we present a low‐profile and low cost antenna for GPS (L1–L2–L5), Galileo (E5–E1–E2), and Glonass (G1–G2) standard. This antenna is a dual‐feed planar patch antenna with four slots to achieve dual‐band operation. The radiating element is fed by a wideband 90° quadrature hybrid coupler to obtain circular polarization on the both bands. The quadrature feeding is achieved using a three‐branch‐line hybrid coupler. The return loss bandwidth of the system (S11 ≤ −10 dB) is 22% in the lower band and 14% in the upper one. The axial ratio (AR) bandwidth in broadside direction (AR= 3 dB) is 20% in the lower band and 11.3% at the upper one. The antenna gain is 6 and 8.4 dBi in the normal direction at the central frequency of 1.23 and 1.6 GHz, respectively. The total dimensions of the antenna are 170 mm2 with a thickness of 7.524 mm. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2811–2814, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27175
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.27175