Staggered Gain for 100+ GHz Broadband Amplifiers

Staggered Gain for 100+ GHz Broadband Amplifiers

A broadband amplifier is realized with cascaded stagger-tuned stages that are equalized for high bandwidth and low gain ripple. The staggered frequency response is demonstrated to improve the transimpedance limit of active circuits. The staggered response is demonstrated with a Darlington feedback a...

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Veröffentlicht in:IEEE journal of solid-state circuits 2011-05, Vol.46 (5), p.1123-1136
Hauptverfasser: Joohwa Kim, Buckwalter, J F
Format: Artikel
Sprache:eng
Schlagworte:
Amplification
Amplifiers
Applied sciences
Bandwidth
Bandwidth enhancement
broadband amplifier
Broadband amplifiers
Capacitance
Circuit properties
Circuits
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Gain
Group delay
Impedance
low group delay variation
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Ripples
SiGe BiCMOS
Silicon germanides
Silicon germanium
transimpedance amplifier
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Beschreibung
Zusammenfassung:A broadband amplifier is realized with cascaded stagger-tuned stages that are equalized for high bandwidth and low gain ripple. The staggered frequency response is demonstrated to improve the transimpedance limit of active circuits. The staggered response is demonstrated with a Darlington feedback amplifier and a constructive wave amplifier, which achieves low group delay. The broadband amplifier is implemented in a 0.12-μm SiGe BiCMOS process and achieves a 3-dB bandwidth of 102 GHz. The gain is 10 dB with 1.5-dB gain-ripple and group-delay variation under ±6 ps over the entire 3-dB bandwidth. The chip occupies an area of 0.29 mm 2 including the pads and consumes 73 mW from a 2-V supply.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2011.2109795