Low cost electronically steered antenna and receiver system for mobile satellite communications

Alonso, J.I.; Blas, Julio; Garcia, Lino; Ramos, J. I.; Pablos, J. de; Grajal, Jesús; Gentili, Gian Guido; Gismero, J.; Pérez, F.

doi:10.1109/22.554576

Cited by 26 publications

(7 citation statements)

References 17 publications

(7 reference statements)

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“…This type of antenna system has high power consumption as well as low tracking-speed owing to the use of the electric motors responsible for mechanical steering [14]- [17]. An alternative solution is a planar phased array antenna which perform beam steering by electronic means [18]- [20]. However, the use of phase shifters for beam forming is quite expensive owing to the large number of them are required.…”

Section: Introductionmentioning

confidence: 99%

Simple Switched-Beam Array Antenna System for Mobile Satellite Communications

Basari

Purnomo

Saito

et al. 2009

IEICE Trans. Commun.

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This paper presents a simple antenna system for land vehicle communication aimed at Engineering Test Satellite-VIII (ETS-VIII) applications. The developed antenna system which designed for mounting in a vehicle is compact, light weight and offers simple satellite-tracking operation. This system uses a microstrip patch array antenna, which includes onboard-power divider and switching circuit for antenna feeding control, due to its low profile. A Global Positioning System (GPS) receiver is constructed to provide accurate information on the vehicle's position and bearing during traveling. The personal computer (PC) interfaces as the control unit and data acquisition, which were specifically designed for this application, allow the switching circuit control as well as the retrieving of the received power levels. In this research, the antenna system was firstly examined in an anechoic chamber for S parameter, axial ratio, and radiation characteristics. Satisfactory characteristics were obtained. As for beamtracking of antenna, it was examined in the anechoic chamber with the gain above 5 dBic and the axial ratio below 3 dB. Moreover, good received power levels for tracking the ETS-VIII satellite in outdoor measurement, were confirmed.

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Section: Introductionmentioning

confidence: 99%

Simple Switched-Beam Array Antenna System for Mobile Satellite Communications

Basari

Purnomo

Saito

et al. 2009

IEICE Trans. Commun.

View full text Add to dashboard Cite

show abstract

“…This type of antenna system has high power consumption as well as low tracking-speed owing to the use of the electric motors responsible for mechanical steering [5]- [9]. An alternative solution is a planar phased array antenna which perform beam steering by electronic means [10]- [12]. However, the use of phase shifters for beam forming is quite expensive owing to the large number of them are required.…”

Section: Introductionmentioning

confidence: 99%

Realization of Simple Antenna System Using ETS-VIII Satellite for Land Vehicle Communications

Basari

Purnomo

Saito

et al. 2009

IEICE Trans. Commun.

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This paper presents a realization of a simple antenna system for land vehicle satellite communication that is tested in experiments conducted on the Engineering Test Satellite-VIII (ETS-VIII). The developed antenna system which was mounted onto a vehicle roof is compact, light weight with simple satellite-tracking operation. In order to realize compact antennas, an onboard-power divider and switching circuit for antenna feeding control are mounted under the array antenna. A Global Positioning System (GPS) module is used to provide accurate information on the vehicle's position and bearing during travelling. A personal computer (PC) is used as the control unit and data logger, which was specifically designed for this application, allow the switching circuit control as well as the retrieving of the received power levels and error rate. The field tests reported in this paper mainly address the tracking performance of the proposed antenna system. Satisfactory results were obtained. Good received power levels and bit error rate (BER) for tracking the ETS-VIII satellite were confirmed. Furthermore, in order to grasp the environmental factors that impact the quality of land vehicle communications, we carefully captured data at obstacles such as buildings, foliages, utility poles and highway overpasses. The results showed blockage and shadowing was confirmed. Additionally, when the antenna was tested at the inclined-road for simple propagation characteristics in elevation direction, stable reception of the satellite signals was realized.

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“…[2] The advantages of using adaptive beam-forming for GPS signal reception have been frequently addressed in previous studies [Miller and Miller, 1994;Pohner and Steensen, 1994;Ramos et al, 1996;Alonso et al, 1996;Zooghby et al, 1998;Blazquez et al, 1999;Kim and Iltis, 2000;Lin, 2000;Hatke et al, 2000]. These include the rejections of multipath signals and interferences which are among the main causes for the inability of current GPS receivers to further increase their accuracies.…”

Section: Introductionmentioning

confidence: 99%

A small hemispherical helical antenna array for two‐dimensional GPS beam‐forming

et al. 2005

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A small hemispherical helical antenna array with multibeam output for GPS beam‐forming is designed and characterized. A Butler matrix beam‐forming network is designed to provide four spatial beams in a two‐dimensional directional space. The original design of the hemispherical helical antenna elements is modified in order to match it to the system impedance. Our study shows that even after an ∼30° scan from the normal direction, the maximum change in beam width is only 6°, the maximum change in axial ratio is 1.4 dB, and the maximum change in power gain is 1.1 dB. These characteristics indicate that the array can be potentially used for GPS beam‐forming.

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Low cost electronically steered antenna and receiver system for mobile satellite communications

Abstract: meter wave integrated circuit commercial silicon monolithic strip combiner adds the six is introduced in a global posireceiver, constructed with two commercial el. Acquisition and tracking algorithms in C-language for working in real time ignal levels provided by the receiver.

Cited by 26 publications

References 17 publications

Simple Switched-Beam Array Antenna System for Mobile Satellite Communications

Simple Switched-Beam Array Antenna System for Mobile Satellite Communications

Realization of Simple Antenna System Using ETS-VIII Satellite for Land Vehicle Communications

A small hemispherical helical antenna array for two‐dimensional GPS beam‐forming

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