Mobile satellite communications - Vehicle antenna technology updateThis paper discusses options for vehicle antennas to be used in mobile satellite communications systems. Two types of antennas are identified. A non-steerable, azimuthally omnidirectional antenna with a modest gain of 3 to 5 dBi is suggested when a low cost is desired. Alternatively, mechanically or electronically steerable antennas with a higher gain of 10 to 12 dBi are suggested to alleviate power and spectrum scarcity associated with mobile satellite communications. For steerable antennas, both open-loop and closed-loop pointing schemes are discussed. Monopulse and sequential lobing are proposed for the mechanically steered and electronically steered antennas, respectively. This paper suggests a hybrid open-loop/closed-loop pointing technique as the best performer in the mobile satellite environment.
Document ID
19860055842
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bell, D. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Naderi, F. M. (California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)