DocumentCode :
2550615
Title :
Mode symmetry assessment of structurally non-uniform asymmetric coupled lines meandered for CMOS passive component design
Author :
Tsai, Kun-Hung ; Tzuang, Ching-Kuang C.
Author_Institution :
Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fYear :
2009
fDate :
7-12 June 2009
Firstpage :
285
Lastpage :
288
Abstract :
This paper presents an accurate modeling of structurally non-uniform and asymmetric coupled lines meandered in RF CMOS integrated circuit, leading to the effective quantitative assessment of equivalent mode symmetry of even/odd mode that are often applied for designing microwave passive component. The four-port scattering parameter of the structurally asymmetric coupled CMOS lines was converted to the ABCD matrix, derived from a uniform pair of coupled lines. Thus the equivalent c-mode and pi-mode representation of the structurally asymmetric coupled CMOS lines was obtained. The proposed extraction procedure was applied to two design examples of highly structural asymmetry, loosely and closely coupled CMOS lines, confirming that the electrical mode symmetry property was properly maintained for both case studies. The even mode and odd mode propagation characteristics of the two case studies were validated theoretically and experimentally, showing excellent mode symmetry was achieved for the structurally asymmetric coupled CMOS lines.
Keywords :
CMOS integrated circuits; S-parameters; coupled circuits; directional couplers; microwave circuits; network analysis; passive networks; CMOS passive component design; RF CMOS integrated circuit; directional coupler; four-port scattering parameter; microwave network analysis; mode symmetry assessment; nonuniform asymmetric coupled lines; synthetic waveguide; CMOS technology; Carbon capture and storage; Coupling circuits; Directional couplers; Distributed parameter circuits; Microwave propagation; Radio frequency; Scattering parameters; Transmission line matrix methods; Transmission line theory; CMOS; Synthetic waveguide; coupled line; directional coupler; microwave network analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International
Conference_Location :
Boston, MA
ISSN :
0149-645X
Print_ISBN :
978-1-4244-2803-8
Electronic_ISBN :
0149-645X
Type :
conf
DOI :
10.1109/MWSYM.2009.5165689
Filename :
5165689
Link To Document :
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