Wideband Inductorless True Time Delay Cell Based on CMOS Inverter for Timed Array Receivers

2021 ◽  
Author(s):  
Ahmad Yarahmadi ◽  
Abumoslem Jannesari
Keyword(s):  
Time Delay ◽  
Cmos Inverter ◽  
Delay Cell ◽  
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.

scholarly journals Compact Cascadable g m -C All-Pass True Time Delay Cell With Reduced Delay Variation Over Frequency

2015 ◽  
Vol 50 (3) ◽  
pp. 693-703 ◽  
Author(s):  
Seyed Kasra Garakoui ◽  
Eric A. M. Klumperink ◽  
Bram Nauta ◽  
Frank E. van Vliet
Keyword(s):  
Time Delay ◽  
Delay Cell ◽  
True Time Delay ◽  
True Time ◽  
Delay Variation

scholarly journals 5GHz CMOS All-Pass Filter-Based True Time Delay Cell

Electronics ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 16 ◽  
Author(s):  
Seyed Aghazadeh ◽  
Herminio Martinez ◽  
Alireza Saberkari
Keyword(s):  
Time Delay ◽  
Cmos Process ◽  
Passive Components ◽  
Pass Filter ◽  
First Order ◽  
Delay Cell ◽  
Analog Cmos ◽  
True Time Delay ◽  
True Time ◽  
5 Ghz

Analog CMOS time-delay cells realized by passive components, e.g., lumped LC delay lines, are inefficient in terms of area for multi-GHz frequencies. All-pass filters considered as active circuits can, therefore, be the best candidates to approximate time delays. This paper proposes a broadband first-order voltage-mode all-pass filter as a true-time-delay cell. The proposed true-time-delay cell is capable of tuning delay, demonstrating its potential capability to be used in different systems, e.g., RF beam-formers. The proposed filter achieves a flat group delay of over 60 ps with a pole/zero pair located at 5 GHz. This proposed circuit consumes only 10 mW power from a 1.8-V supply. To demonstrate the performance of the proposed all-pass filter, simulation results are conducted by using Virtuoso Cadence in a standard TSMC 180-nm CMOS process.

RF MEMS Extended Tuning Range Varactor and Varactor Based True Time Delay Line Design

PIERS Online ◽  
2008 ◽  
Vol 4 (4) ◽  
pp. 433-436 ◽  
Author(s):  
Yaping Liang ◽  
Calvin W. Domier ◽  
Neville C. Luhmann, Jr.
Keyword(s):  
Time Delay ◽  
Delay Line ◽  
Tuning Range ◽  
Rf Mems ◽  
True Time Delay ◽  
True Time ◽  
Line Design

scholarly journals Programmable True Time Delay Lines Using Integrated Waveguide Meshes

2018 ◽  
Vol 36 (19) ◽  
pp. 4591-4601 ◽  
Author(s):  
Daniel Perez-Lopez ◽  
Erica Sanchez ◽  
Jose Capmany
Keyword(s):  
Time Delay ◽  
Delay Lines ◽  
True Time Delay ◽  
True Time

Continuous photonic microwave true-time delay using a side-polished fiber Bragg grating with heating electrode

2004 ◽  
Vol 44 (1) ◽  
pp. 35-37 ◽  
Author(s):  
Sang-Shin Lee ◽  
Ho-Dong Chae ◽  
Do-Hwan Kim ◽  
Hyung-Joon Kim ◽  
Kwang-Taek Kim
Keyword(s):  
Time Delay ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
True Time Delay ◽  
True Time ◽  
Side Polished Fiber
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