Title :
DC to 50 GHz wideband amplifier with Bessel transfer function
Author :
Choudhury, Debabani ; Mokhtari, Mehran ; Sokolich, Marko ; Jensen, Joseph F.
Author_Institution :
HRL Labs., LLC, Malibu, CA, USA
Abstract :
A compact, high-performance active feedback amplifier circuit is presented with more than 50 GHz bandwidth characteristic and less than ±2 ps group delay variation. InP heterogeneous bipolar transistor (HBT) technology is used to design and fabricate this amplifier circuit. Input and output return losses are better than 10 dB up to 50 GHz. The circuit also demonstrates >550 GHz gain-bandwidth product.
Keywords :
Bessel functions; III-V semiconductors; bipolar MIMIC; differential amplifiers; feedback amplifiers; heterojunction bipolar transistors; indium compounds; millimetre wave amplifiers; transfer functions; wideband amplifiers; 0 Hz to 50 GHz; 10 dB; 50 GHz; Bessel transfer function; HBT technology; InP; active feedback amplifier; broadband amplifier; constant group delay; differential amplifier; group delay variation; wideband amplifier; Bandwidth; Broadband amplifiers; Circuits; Cutoff frequency; Delay; Feedback amplifiers; Heterojunction bipolar transistors; Indium phosphide; Optical amplifiers; Transfer functions;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2004. Digest of Papers. 2004 IEEE
Print_ISBN :
0-7803-8333-8
DOI :
10.1109/RFIC.2004.1320611
