Title :
Analysis and design of lumped-element quadrature couplers with lossy passive elements
Author :
Ozis, Dicle ; Paramesh, Jeyanandh ; Allstot, David J.
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA
Abstract :
The analysis and design of lumped-element quadrature directional couplers is described for monolithic applications. The analysis is carried out using the fourfold symmetry of capacitively and inductively coupled hybrid circuits. S-parameter responses of these two types of couplers are compared when losses and other parasitic effects of typical on-chip passive elements are taken into account. The analysis provides analytical expressions that make it possible to determine the effects that each non-ideality has on overall circuit performance before circuit simulations are performed using a particular process design kit
Keywords :
CMOS analogue integrated circuits; S-parameters; integrated circuit design; linear network synthesis; lumped parameter networks; microwave integrated circuits; millimetre wave directional couplers; monolithic integrated circuits; CMOS integrated circuits; S-parameter; capacitively coupled circuit; directional coupler; hybrid circuit; inductively coupled circuit; lossy passive element; lumped-element microwave circuit; lumped-element quadrature coupler; monolithic integrated circuits; on-chip passive element; CMOS technology; Circuit optimization; Circuit simulation; Directional couplers; Equations; Gallium arsenide; Impedance; Power transmission lines; Radio frequency; Scattering parameters; CMOS integrated circuits; couplers; lumped-element microwave circuits; monolithic integrated circuits; transformers;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693085
