Title :
A linear-control wide-band CMOS attenuator
Author :
Kaunisto, Risto ; Korpi, Petri ; Kiraly, Jiri ; Halonen, Kari
Author_Institution :
Helsinki Univ. of Technol., Espoo, Finland
Abstract :
A fully-CMOS controllable attenuator with a multi-octave bandwidth is presented. The linearity of the attenuation control is ensured by a constant-current reference device in a feedback loop, and another self-adjusting control loop is adopted for matching. Realized with a standard 0.8-μm CMOS process, the circuit has a bandwidth of DC-900 MHz with an attenuation tuning range of >28 dB. The measured attenuation compression point is +5 dBm, and the total DC power consumption is 12 mW
Keywords :
CMOS integrated circuits; attenuators; circuit feedback; circuit tuning; 0 to 900 MHz; 0.8 micron; 12 mW; DC power consumption; attenuation compression point; attenuation control; attenuation tuning range; bandwidth; constant-current reference device; feedback loop; linear-control wideband CMOS attenuator; linearity; self-adjusting control loop; Attenuation measurement; Attenuators; Bandwidth; CMOS process; Circuit optimization; Feedback loop; Linear feedback control systems; Linearity; Power measurement; Wideband;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.922272
