A linear-control wide-band CMOS attenuator

A linear-control wide-band CMOS attenuator

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-/spl mu/m CMOS...

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Bibliographische Detailangaben
Hauptverfasser: Kaunisto, R., Korpi, P., Kiraly, J., Halonen, K.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Attenuation measurement
Attenuators
Bandwidth
Circuit optimization
CMOS process
Feedback loop
Linear feedback control systems
Linearity
Power measurement
Wideband
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Beschreibung
Zusammenfassung: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-/spl mu/m 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.
DOI:10.1109/ISCAS.2001.922272