Antennas for Global Navigation Satellite Systems by Xiaodong Chen, Clive G. Parini, Brian Collins, Yuan Yao,

By Xiaodong Chen, Clive G. Parini, Brian Collins, Yuan Yao, Masood Ur Rehman

Content material:
Chapter 1 basics of GNSS (pages 1–19):
Chapter 2 basic concerns for GNSS Antennas (pages 21–40):
Chapter three satellite tv for pc GNSS Antennas (pages 41–53):
Chapter four Terminal GNSS Antennas (pages 55–80):
Chapter five Multimode and complicated Terminal Antennas (pages 81–110):
Chapter 6 Terminal Antennas in tough Environments (pages 111–148):
Chapter 7 Human person results on GNSS Antennas (pages 149–180):
Chapter eight cellular Terminal GNSS Antennas (pages 181–206):

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Antennas for Global Navigation Satellite Systems

Content material: bankruptcy 1 basics of GNSS (pages 1–19): bankruptcy 2 primary concerns for GNSS Antennas (pages 21–40): bankruptcy three satellite tv for pc GNSS Antennas (pages 41–53): bankruptcy four Terminal GNSS Antennas (pages 55–80): bankruptcy five Multimode and complicated Terminal Antennas (pages 81–110): bankruptcy 6 Terminal Antennas in tricky Environments (pages 111–148): bankruptcy 7 Human consumer results on GNSS Antennas (pages 149–180): bankruptcy eight cellular Terminal GNSS Antennas (pages 181–206):

Extra resources for Antennas for Global Navigation Satellite Systems

Example text

2 LP Antenna Design and Example The LP antenna usually has a simple structure, such as a dipole, which we use as a straightforward example to illustrate the characteristics of an LP antenna. 5. 2 mm. The antenna illustrated is LP in the vertical direction. 5 Schematic of an ideal dipole. 6 Simulated S11 curve of a half-wavelength dipole. The dipole antenna is modelled by using CST Microwave Studio [4]. 6 shows the simulated S11 for the antenna. The antenna performs well in the L1 frequency band with a −10 dB bandwidth of 153 MHz.

11. -C. , ‘Multipactor breakdown and passive intermodulation in microwave equipment for satellite application’, Proceedings of IEEE MILCOM’90, Monterey, CA, September 30–October 3, 1990, Vol. 1, pp. 181–187. 4 Terminal GNSS Antennas In the last few decades, the variety of electronic terminal devices integrated with global positioning, navigation and time services has grown dramatically, so the design of terminal antennas for GNSS applications is attracting more and more interest. This chapter introduces three kinds of RHCP antennas commonly used for GNSS reception, namely microstrip patch antennas, quadrifilar helices and spirals.

Lossy cavities are usually placed behind the spiral to eliminate back lobes, because the structure is intrinsically bidirectional, while a unidirectional pattern is usually preferred. 9 A two-arm log-spiral antenna backed with a cavity. into different types: Archimedean spiral, square spiral, log spiral, etc. [2]. 9. Different designs of spiral antenna can be obtained by varying the number of turns, the spacing between turns and the width of the arms. The properties of the antenna also depend on the permittivity of the dielectric medium on which the spiral is supported.

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