True-time-delay transmit/receive optical beam-forming system for phased arrays and other signal processing applications

1994 ◽  
Author(s):  
Edward N. Toughlian ◽  
H. Zamuda ◽  
Charity A. Carter
Keyword(s):  
Signal Processing ◽  
Time Delay ◽  
Phased Arrays ◽  
Optical Beam ◽  
Beam Forming ◽  
True Time Delay ◽  
True Time

True-time-delay steering of dual-band phased-array antenna using laser-switched optical beam forming networks

1991 ◽  
Author(s):  
Willie W. Ng ◽  
Gregory L. Tangonan ◽  
Andrew A. Walston ◽  
Irwin L. Newberg ◽  
Jar J. Lee ◽  
...  
Keyword(s):  
Time Delay ◽  
Phased Array ◽  
Optical Beam ◽  
Array Antenna ◽  
Dual Band ◽  
Beam Forming ◽  
Phased Array Antenna ◽  
True Time Delay ◽  
True Time

True time-delay beam forming using acousto-optics

1992 ◽  
Author(s):  
Leslie H. Gesell ◽  
Terry M. Turpin
Keyword(s):  
Time Delay ◽  
Beam Forming ◽  
True Time Delay ◽  
True Time

scholarly journals Design of True Time Delay Millimeter Wave Beamformers for 5G Multibeam Phased Arrays

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1331 ◽  
Author(s):  
Dimitrios I. Lialios ◽  
Nikolaos Ntetsikas ◽  
Konstantinos D. Paschaloudis ◽  
Constantinos L. Zekios ◽  
Stavros V. Georgakopoulos ◽  
...  
Keyword(s):  
Time Delay ◽  
Millimeter Wave ◽  
Communication Systems ◽  
Phased Arrays ◽  
High Capacity ◽  
Wireless Systems ◽  
Base Stations ◽  
Small Cells ◽  
True Time Delay ◽  
True Time

Millimeter wave (mm-Wave) technology is likely the key enabler of 5G and early 6G wireless systems. The high throughput, high capacity, and low latency that can be achieved, when mm-Waves are utilized, makes them the most promising backhaul as well as fronthaul solutions for the communication between small cells and base stations or between base stations and the gateway. Depending on the channel properties different communication systems (e.g., beamforming and MIMO) can accordingly offer the best solution. In this work, our goal is to design millimeter wave beamformers for switched beam phased arrays as hybrid beamforming stages. Specifically, three different analog beamforming techniques for the frequency range of 27–33 GHz are presented. First, a novel compact multilayer Blass matrix is proposed. Second, a modified dummy-ports free, highly efficient Rotman lens is introduced. Finally, a three-layer true-time-delay tree topology inspired by microwave photonics is presented.

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