0.7-dB Insertion-Loss D-Band Lange Coupler Design and Characterization in 0.13 μm SiGe BiCMOS Technology

Design, measurement, and characterization of a low-loss Lange coupler on Si-substrate up to 170 GHz are presented in this paper. How to determine the value of the even number of the strip lines according to the process design rules is illustrated carefully based on odd- and even-mode impedance theor...

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Bibliographic Details
Published in:Journal of infrared, millimeter and terahertz waves millimeter and terahertz waves, 2010-10, Vol.31 (10), p.1136-1145
Main Authors: Wang, Lei, Xiong, Yong-Zhong, Zhang, Bo, Hu, San-Ming, Lim, Teck-Guan, Yuan, Xiao-Jun
Format: Article
Language:English
Subjects:
Classical Electrodynamics
Couplers
Electrical Engineering
Electronics and Microelectronics
Engineering
Insertion loss
Instrumentation
Network analysers
Resistors
Silicon substrates
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Summary:Design, measurement, and characterization of a low-loss Lange coupler on Si-substrate up to 170 GHz are presented in this paper. How to determine the value of the even number of the strip lines according to the process design rules is illustrated carefully based on odd- and even-mode impedance theory and calculation. The deembedding procedures of GSG pads and 50 Ω termination resistors are illustrated in details. Simulation and measurement results indicate that the fabricated on-chip 50 Ω resistors can be used for characterization of four-port Lange coupler by two-port network analyzer within expected measurement errors. Measurement results show that the minimum insertion loss of 0.7 dB at central frequency of 140 GHz is achieved, which is in excellent agreement with simulated data.
ISSN:1866-6892
1866-6906
DOI:10.1007/s10762-010-9696-y