140–220-GHz DHBT Detectors

Author

Vassilev, Vessen ; Zirath, Herbert ; Kozhuharov, Rumen ; Lai, S.

Author_Institution

Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Goteborg, Sweden

Volume

61

Issue

6

fYear

2013

fDate

Jun-13

Firstpage

2353

Lastpage

2360

Abstract

This paper discusses G -band (140-220 GHz) detectors based on a 250-nm InP-InGaAs-InP double heterojunction bipolar transistor process available from the Teledyne Scientific Company. Two types of detectors are presented-a passive detector where the transistor´s base-emitter junction nonlinearity is used, and an active detector, where the transistor transconductance nonlinearity is used for detection. Measurements of transistor noise-power spectrum density at low frequencies is used to model and predict the noise equivalent power (NEP) of the detectors. Analysis of responsivity and noise is presented and compared with measurements. Both configurations are analyzed and compared in terms of noise-voltage, responsivity and NEP. The conclusion that the passive detector offers lower NEP is analyzed and explained.

Keywords

III-V semiconductors; gallium arsenide; heterojunction bipolar transistors; indium compounds; millimetre wave bipolar transistors; millimetre wave detectors; DHBT detectors; G-band detectors; InP-InGaAs-InP; NEP; active detector; double heterojunction bipolar transistor process; frequency 140 GHz to 220 GHz; noise analysis; noise equivalent power prediction; passive detector; responsivity analysis; size 250 nm; transistor base-emitter junction nonlinearity; transistor noise-power spectrum density measurements; transistor transconductance nonlinearity; $G$-band; Double heterojunction bipolar transistor (DHBT); InP; flicker noise; monolithic microwave integrated circuit (MIMIC); noise equivalent power (NEP); passive imaging; power detectors; radiometers; receivers; remote sensing; responsivity;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2013.2259250

Filename

6515147