The phase error and beam-pointing error in coupled oscillator beam-steering arrays

2005 ◽  
Vol 53 (1) ◽  
pp. 386-393 ◽  
Author(s):  
J. Shen ◽  
L.W. Pearson
Keyword(s):  
Beam Steering ◽  
Phase Error ◽  
Coupled Oscillator ◽  
Pointing Error

scholarly journals A Review on the Development of Rotman Lens Antenna

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Shruti Vashist ◽  
M. K. Soni ◽  
P. K. Singhal
Keyword(s):  
High Performance ◽  
Beam Steering ◽  
Phase Error ◽  
Antenna System ◽  
Surveillance Systems ◽  
Electronic Warfare ◽  
Design Concepts ◽  
Low Profile ◽  
True Time ◽  
The One

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.

Pointing error analysis of Risley-prism-based beam steering system

2014 ◽  
Vol 53 (25) ◽  
pp. 5775 ◽  
Author(s):  
Yuan Zhou ◽  
Yafei Lu ◽  
Mo Hei ◽  
Guangcan Liu ◽  
Dapeng Fan
Keyword(s):  
Error Analysis ◽  
Beam Steering ◽  
Steering System ◽  
Pointing Error

scholarly journals Survey on Mitigating the Problems of Parabolic Reflectors for Efficient Communication

2021 ◽  
Vol 9 (5) ◽  
Author(s):  
Asianuba Ifeoma B. ◽  
Okerulu Charles I.
Keyword(s):  
Phase Error ◽  
Side Lobe ◽  
Communication Process ◽  
Pointing Error ◽  
Edge Diffraction ◽  
Error Surface ◽  
Efficient Communication ◽  
Method Of Solution ◽  
Diverse Application ◽  
Parabolic Reflectors

In this paper, various problems associated with parabolic reflectors, its causes and the approach to mitigate these problems are discussed. The problems include; side lobe radiations, edge diffraction, aperture blockage, cross polarisation, feed spill over, feed illumination taper, pointing error, surface error and phase error. These problems have adverse effect on the overall gain, efficiency and directivity of the antenna thereby inhibiting efficient communication process. The result of the survey reveals that, phase error tends to be the most difficult of the aforementioned problems due to the challenges associated with locating the phase centre at reflector’s focus. The aperture blockage seems to have the least method of solution, because the problem can be solved by changing the centre feed to an offset feed. Detailed investigation of these problems and the relevant solutions are necessary, since parabolic reflectors are among the most common antennas with diverse application.    

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