Title :
A 390 ps On-Wafer True-Time-Delay Line Developed by a Novel Micro-Coax Technology
Author :
Yang Tian ; Kokyan Lee ; Hong Wang
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
A CMOS-compatible on-wafer true-time-delay (TTD) line for broadband microwave applications is demonstrated using a novel micro-coax technology. The insertion loss of the developed TTD line is less than 2.55 dB for a constant group delay of 390 ps from dc to 40 GHz, without control power or control voltage. To the best of our knowledge, the fabricated micro-coaxial TTD line provides the best figures-of-merit (FOM) value (0.00641 dB/ps at 40 GHz) among reported on-wafer TTD lines.
Keywords :
CMOS integrated circuits; MMIC; coaxial cables; delay lines; millimetre wave phase shifters; CMOS-compatible on-wafer true-time-delay line; FOM value; broadband microwave applications; figures-of-merit value; frequency 40 GHz; micro-coaxial TTD line; novel micro-coax technology; on-wafer TTD line; time 390 ps; Copper; Delay lines; Delays; Microwave circuits; Microwave integrated circuits; Silicon; Substrates; Broadband; figures-of-merit (FOM); monolithic microwave integrated circuit (MMIC); phase shifters; true-time-delay (TTD) line;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2296294
