Distributed MEMS true-time delay phase shifters and wide-band switches

1998 ◽  
Vol 46 (11) ◽  
pp. 1881-1890 ◽  
Author(s):  
S. Barker ◽  
G.M. Rebeiz
Keyword(s):  
Time Delay ◽  
Wide Band ◽  
Phase Shifters ◽  
True Time Delay ◽  
True Time

scholarly journals A true-time-delay networks design technique

2014 ◽  
Vol 8 (2) ◽  
pp. 155-164 ◽  
Author(s):  
Alberto Leggieri ◽  
Davide Passi ◽  
Franco Di Paolo
Keyword(s):  
Time Delay ◽  
Numerical Solutions ◽  
Wide Band ◽  
Phase Shifters ◽  
Single Frequency ◽  
Phased Array Antenna ◽  
True Time Delay ◽  
X Band ◽  
True Time ◽  
Spatial Positioning

This paper proposes a technique to design wide band switched-line (SL) true-time-delay (TTD) networks, commonly used for phased array antenna (PAA) applications. This study investigates the constant-delay behavior of switched-line phase shifters based on single-pole double-throw (SPDT) switches. Circuit sizing starts by considering the effective S-parameters of the switches, to use their non-idealities as an integral part of the phase shift linearly dependent to the frequency and by considering, from the beginning, the possible spatial positioning of elements that allows the circuit feasibility as a design target. The aim of this study is to provide a technique suitable for the design of well-matched TTD networks with a flat delay in wide bandwidth. In this paper, we propose new design formulas for which we show a single-frequency implementation. A computational strategy is used to obtain numerical solutions of the derived equations with this study. Finally, a monolithic X-band TTD circuit example is shown.

Optimization of design and fabrication for micromachined true time delay (TTD) phase shifters

2005 ◽  
Vol 119 (2) ◽  
pp. 446-454 ◽  
Author(s):  
W. Palei ◽  
A.Q. Liu ◽  
A.B. Yu ◽  
A. Alphones ◽  
Y.H. Lee
Keyword(s):  
Time Delay ◽  
Phase Shifters ◽  
True Time Delay ◽  
True Time
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