Frequency domain analysis and performance of a true time delay fiber optic beam forming network for array antennas

1990 ◽  
Author(s):  
David D. Curtis
Keyword(s):  
Time Delay ◽  
Frequency Domain ◽  
Fiber Optic ◽  
Domain Analysis ◽  
Frequency Domain Analysis ◽  
Beam Forming ◽  
Array Antennas ◽  
True Time Delay ◽  
True Time ◽  
And Performance

Development and field demonstration of a hardware-compressive fiber-optic true-time-delay steering system for phased-array antennas

1994 ◽  
Vol 33 (35) ◽  
pp. 8173 ◽  
Author(s):  
Akis Goutzoulis ◽  
Ken Davies ◽  
John Zomp ◽  
Peter Hrycak ◽  
Andy Johnson
Keyword(s):  
Time Delay ◽  
Phased Array ◽  
Fiber Optic ◽  
Steering System ◽  
Phased Array Antennas ◽  
Array Antennas ◽  
True Time Delay ◽  
True Time

A multi-octave microwave 6-bit true time delay with low amplitude and delay variation in 65 nm CMOS

2021 ◽  
pp. 1-10
Author(s):  
Yakov Gutkin ◽  
Asher Madjar ◽  
Emanuel Cohen
Keyword(s):  
Time Delay ◽  
Insertion Loss ◽  
Impedance Matching ◽  
Least Significant Bit ◽  
Delay Cell ◽  
True Time Delay ◽  
Unit Cells ◽  
True Time ◽  
And Performance ◽  
Low Amplitude

Abstract In this paper, we describe the design, layout, and performance of a 6-bit TTD (true time delay) chip operating over the entire band of 2–18 GHz. The 1.15 mm2 chip is implemented using TSMC foundry 65 nm technology. The least significant bit is 1 ps. The design is based on the concept of all-pass network with some modifications intended to reduce the number of unit cells. Thus, the first three bits are implemented in a single delay cell. A peaking buffer amplifier between bit 4 and bit 5 is used for impedance matching and partial compensation of the insertion loss slope. The rms delay error of the TTD is <1 ps over most of the frequency band and insertion loss is between 2.5 and 6.3 dB for all 64 states.

Sign in / Sign up

Export Citation Format

Share Document