Coordinate Transformation for Phased Array Antenna Beam Steering Using GPS and Ship's Motion Data

2000 ◽  
Author(s):  
Dieter R. Lohrmann
Keyword(s):  
Coordinate Transformation ◽  
Phased Array ◽  
Beam Steering ◽  
Array Antenna ◽  
Phased Array Antenna ◽  
Antenna Beam ◽  
Motion Data

Phased Array Antenna Beam Steering Scheme for Future Wireless Access Systems Using Radio-over-Fiber Technique

2014 ◽  
Vol E97.B (7) ◽  
pp. 1281-1289 ◽  
Author(s):  
Masayuki OISHI ◽  
Yoshihiro NISHIKAWA ◽  
Kosuke NISHIMURA ◽  
Keiji TANAKA ◽  
Shigeyuki AKIBA ◽  
...  
Keyword(s):  
Phased Array ◽  
Beam Steering ◽  
Radio Over Fiber ◽  
Array Antenna ◽  
Wireless Access ◽  
Phased Array Antenna ◽  
Antenna Beam

Simultaneous beam steering of multiple signals based on optical wavelength-selective switch

2015 ◽  
Vol 7 (3-4) ◽  
pp. 391-398
Author(s):  
Giovanni Serafino ◽  
Antonio Malacarne ◽  
Claudio Porzi ◽  
Paolo Ghelfi ◽  
Marco Presi ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Integrated Circuit ◽  
Phase Shifter ◽  
Phased Array ◽  
Beam Steering ◽  
Array Antenna ◽  
Ring Resonators ◽  
Antenna Element ◽  
Phased Array Antenna ◽  
Wavelength Selective Switch

A novel, photonics-based scheme for the independent and simultaneous beam steering of multiple radio frequency signals at a wideband phased-array antenna is presented. As a proof of concept, a wavelength-selective switch (WSS) is employed both as a wavelength router to feed multiple antenna elements and as a tunable phase shifter to independently control the phase of each signal at any antenna element. In the experiment, two signals at 12.5 and 37.5 GHz are simultaneously fed to the four output ports of the WSS with independent and tunable phase shifts, emulating the independent steering of two signals in a four-element phased-array antenna. The results confirm the precision and flexibility of the proposed scheme, which can be realized both with bulk components or resorting to photonic integrated circuits, especially for wide-band applications. The architecture for a possible integrated implementation of the proposed solution is presented, employing a structure based on micro-ring resonator. Starting from these results, the feasibility of an integrated version of the presented architecture is also considered. The proposed photonic integrated circuit realizing the beam-forming network might be based on tunable true-time delay, as well as on phase shift through micro-ring resonators, and could be conveniently implemented with CMOS-compatible silicon technology.

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