Title :
A differential 0.13/spl mu/m CMOS active inductor for high-frequency phase shifters
Author :
Abdalla, Mohamed ; Eleftheriades, George ; Phang, Khoman
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Tornto, Ont.
Abstract :
This paper presents a novel differential 0.13mum CMOS active inductor circuit, which is employed in the design of an integrated negative refractive index metamaterial phase shifter. The active inductor circuit employs a digital/analog tunable feedback resistance to allow controlling both the inductance and the quality factor. The inductance is tunable from 2.5nH to 13.6nH at 5GHz while having a fixed peak quality factor of 100. This results in a phase shift of 36.7deg/stage, at 5GHz, with less than 0.67dB insertion loss
Keywords :
CMOS integrated circuits; circuit feedback; circuit tuning; differentiating circuits; equivalent circuits; inductors; metamaterials; microwave phase shifters; 0.13 micron; 0.67 dB; 5 GHz; differential CMOS active inductor; high-frequency phase shifters; metamaterial phase shifter; negative refractive index; tunable feedback resistance; Active inductors; Feedback circuits; Inductance; Metamaterials; Microwave circuits; Phase shifters; Q factor; Refractive index; Shunt (electrical); Tunable circuits and devices;
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.2006.1693341
