Microwave Beamforming Networks for Intelligent Transportation Systems

Rahimian, Ardavan

doi:10.5772/26180

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…Microwave beamforming networks can greatly increase and enhance the performance of wireless systems used in intelligent transportation systems and framework. In this contribution, passive planar steerable microwave beamforming networks based on Rotman lens and cascaded Butler matrices have been designed and analyzed in intelligent transportation systems [13].…”

Section: Microwave Lens Beamforming Networkmentioning

confidence: 99%

A Review on the Development of Rotman Lens Antenna

Soni

Singhal²

2014

Chinese Journal of Engineering

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Rotman lenses are the beguiling devices used by the beamforming networks (BFNs). These lenses are generally used in the radar surveillance systems to see targets in multiple directions due to its multibeam capability without physically moving the antenna system. Now a days these lenses are being integrated into many radars and electronic warfare systems around the world. The antenna should be capable of producing multiple beams which can be steered without changing the orientation of the antenna. Microwave lenses are the one who support low-phase error, wideband, and wide-angle scanning. They are the true time delay (TTD) devices producing frequency independent beam steering. The emerging printed lenses in recent years have facilitated the advancement of designing high performance but low-profile, light-weight, and small-size and networks (BFNs). This paper will review and analyze various design concepts used over the years to improve the scanning capability of the lens developed by various researchers.

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Section: Microwave Lens Beamforming Networkmentioning

confidence: 99%

A Review on the Development of Rotman Lens Antenna

Soni

Singhal²

2014

Chinese Journal of Engineering

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“…These port radiation patterns are used to compute the direct path and reflected path propagation from port-to-port in order to improve the response of the outer beams [15,16].…”

Section: Satellite Rotman Lens Microwave Beamforming Network: Design mentioning

confidence: 99%

DESIGN AND PERFORMANCE OF A K<sub>U</sub>-BAND ROTMAN LENS BEAMFORMING NETWORK FOR SATELLITE SYSTEMS

Rahimian¹

2013

PIER M

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This paper presents the novel theoretical design, CAD modeling, and performance analysis of a compact and reliable microwave beamforming network (MBFN) which has been developed based on the RF Rotman lens switched-beam steered array for operation in K u frequency band. The objective of this investigation is to develop a passive beam steering microwave network device intended for the potential suitable use in satellite communications beam scanning electronically scanned arrays. A thorough K u -band satellite microwave network system has been theoretically designed and simulated along with the analysis of its output RF characteristics. The antenna array feeding network is capable of multi-beams generation and wide-band operation in terms of the true-time-delay (TDD) and low dispersive properties in order to allow simultaneous operation of multiple RF beams. The Rotman lens demonstrates the potential appropriateness in order to develop a high-performance and wellestablished design for advanced satellite microwave systems, services, and devices.

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“…The digital delay lines can offer better performance; however, they are fabricated to give few discrete phase values thus resulting in discrete scanning angles. Various configurations of beam forming networks have been presented for the improvement of base station coverage or enhancing the performance of the mobile communication systems [4], [5]. Optimization algorithms such as the particle swarm technique were used for beam-forming in array antennas used by mobile base stations [6].…”

Section: Introductionmentioning

confidence: 99%

A cellular base station antenna configuration for variable coverage

Shakeeb¹,

Sayidmarie²

2019

IJECE

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The field coverage offered by the base station antenna in GSM systems influences the reception and interference performances. The coverage can be varied by scanning the mainbeam direction or varying the shape of the radiation pattern. In cellular system applications, a simple technique is desirable to achieve this goal. A simple technique to vary the coverage of cellular base station is investigated. The technique uses two conventional antennas tilted by a certain angle and fed by the same signal but at variable amplitudes. It is demonstrated that the field across one half of the covered sector can be gradually increased while that at the other half is reduced by varying the excitations of the two antenna elements. This can be deployed in a simple electronic means in response to the changing scenario rather readjusting the direction of the base station antenna.

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Microwave Beamforming Networks for Intelligent Transportation Systems

Cited by 5 publications

References 14 publications

A Review on the Development of Rotman Lens Antenna

A Review on the Development of Rotman Lens Antenna

DESIGN AND PERFORMANCE OF A K<sub>U</sub>-BAND ROTMAN LENS BEAMFORMING NETWORK FOR SATELLITE SYSTEMS

A cellular base station antenna configuration for variable coverage

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