Investigation on Improvements in SDARS Reception Quality with a Scan/Phase Antenna Diversity System

Senega, S.; Barie, D.; Muller, D. J.; Reiter, L.; Lindenmeier, Stefan

doi:10.1109/gemic.2009.4815862

Cited by 4 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Earlier measurements conducted with a diversity antenna set mounted on the roof of a car in combination with the scan-phase diversity system with parallel sniffing show an excellent performance even in severe multipath propagation scenarios [8]. However, convertibles do not offer a mounting position for SDARS antennas on their roof.…”

Section: B Overall System Performancementioning

confidence: 98%

Antenna module with integrated scan-phase antenna diversity system for SDARS

Senega

Lindenmeier

2012

2012 6th European Conference on Antennas and Propagation (EUCAP)

Self Cite

View full text Add to dashboard Cite

A scan-phase multi-antenna diversity system is able to significantly improve reception performance of satellite digital audio radio systems (SDARS) in severe multipath propagation scenarios. The low hardware cost of such a system can only be achieved if a single level measurement circuitry is used for all antenna signals. In this paper the influences of switching between the antenna signals for level detection and the signal processing in the diversity system are studied for two different antenna diversity systems. A modification of the diversity hardware that avoids those influences is investigated. Measurements were performed to compare the modified and unmodified system in terms of audio availability.Test drives underneath dense foliage were conducted with a scan-phase antenna diversity system in combination with a diversity antenna set mounted on the dashboard of a car. This mounting position is of wide interest for example for convertibles, where the car roof is not available for the mounting of SDARS antennas. Measurement results show that the scan-phase antenna diversity system performs very well in such a disadvantageous antenna position. The diversity combination on the dashboard can compete with a roof-mounted patch antenna in the reception of geostationary satellite signals even with a closed roof.

show abstract

Section: B Overall System Performancementioning

confidence: 98%

Antenna module with integrated scan-phase antenna diversity system for SDARS

Senega

Lindenmeier

2012

2012 6th European Conference on Antennas and Propagation (EUCAP)

Self Cite

View full text Add to dashboard Cite

show abstract

“…These antennas are in general applied as a single omnidirectional element, which naturally limits the maximum gain of the antenna and does not achieve the required level of gain. An example of arraying two or more antenna elements to increase reception quality is described in , but it is more oriented to the application of antenna diversity to improve blockage effects than to achieve a high gain in all the situations. From a trade‐off of antenna gain, size and complexity, the design has been based on a 4‐element (2 × 2) planar array, as shown in Figure .…”

Section: S‐band Directive Antennamentioning

confidence: 99%

User terminal antennas for S‐band mobile satellite communication systems

Tiezzi

Domínguez

Padilla

et al. 2014

Satell Commun Network

View full text Add to dashboard Cite

This paper presents the design of two types of S-band antennas suitable for mobile satellite communication applications. One design is based on omnidirectional radiating elements and targets consumer systems installed on cars. The other uses an array of four elements with electronic switching, controlled by embedded sensors, to generate directive beams with gain higher than the one that could be provided by an omnidirectional antenna. This latter design targets primarily applications for professional vehicles requiring higher data rates, but it also enables the use of S-band in a wider satellite footprint. The main aspects of antenna design and of validation results are described.

show abstract

“…2). In multipath fading environments the use of several receiving antennas in combination with a scan-phase antenna diversity system has been shown, reducing audio mutes significantly compared with single antennas [12][13][14]. In [15,16] measurements are presented which prove that even at critical mounting positionse.g.…”

Section: Introductionmentioning

confidence: 99%

Automotive antenna diversity system for satellite radio with high phase accuracy in low SNR-scenarios

Senega

Nassar

Lindenmeier

2018

Int. J. Microw. Wireless Technol.

View full text Add to dashboard Cite

For a fast scan-phase satellite radio antenna diversity system a noise correction method is presented for a significant improvement of audio availability at low signal-to-noise ratio (SNR) conditions. An error analysis of the level and phase detection within the diversity system in the presence of noise leads to a correction method based on a priori knowledge of the system's noise floor. This method is described and applied in a hardware example of a satellite digital audio radio services antenna diversity circuit for fast fading conditions. Test drives, which have been performed in real fading scenarios, are described and results are analyzed statistically. Simulations of the scan-phase antenna diversity system show higher signal amplitudes and availabilities. Measurement results of dislocated antennas as well as of a diversity antenna set on a single mounting position are presented. A comparison of a diversity system with noise correction, the same system without noise correction, and a single antenna system with each other is performed. Using this new method in fast multipath fading driving scenarios underneath dense foliage with a low SNR of the antenna signals, a reduction in audio mute time by one order of magnitude compared with single antenna systems is achieved with the diversity system.

show abstract

Investigation on Improvements in SDARS Reception Quality with a Scan/Phase Antenna Diversity System

Cited by 4 publications

References 5 publications

Antenna module with integrated scan-phase antenna diversity system for SDARS

Antenna module with integrated scan-phase antenna diversity system for SDARS

User terminal antennas for S‐band mobile satellite communication systems

Automotive antenna diversity system for satellite radio with high phase accuracy in low SNR-scenarios

Contact Info

Product

Resources

About