A 7.5-GHz super regenerative detector

Author

Buchanan, N.B. ; Fusco, V.F. ; Stewart, J.A.C.

Author_Institution

Dept. of Electr. & Electron. Eng., Queen´´s Univ., Belfast, UK

Volume

50

Issue

9

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2198

Lastpage

2202

Abstract

In this paper, simulated and measured results are presented for a microwave-integrated-circuit super regenerative detector operating at 7.5 GHz and brief comparisons made to a monolithic-microwave integrated-circuit super regenerative detector operating at 34 GHz. The sensitivity of the 7.5-GHz detector was measured at -83-dBm (AM, 1 kHz, 100 % mod) RF signal for 12 dB (signal + noise + distortion)/(noise + distortion). Simulation results show that, to produce a sensitive super regenerative detector, a high rate of change in loop gain of the oscillator circuit with respect to the gate bias (quenching) voltage and a high maximum loop gain at the point of detection is required. It has also been shown, by simulation and measurement, that the detection frequency of the super regenerative detector is lower than the normal free-running oscillation frequency

Keywords

detector circuits; microwave detectors; microwave integrated circuits; microwave receivers; 7.5 GHz; MIC super regenerative detectors; detection frequency; gate bias voltage; microwave receivers; microwave-integrated-circuit detector; oscillator circuit loop gain; quenching behavior simulation; quenching voltage; Circuit noise; Circuit simulation; Detectors; Distortion measurement; Frequency; Integrated circuit measurements; Microwave measurements; Noise measurement; Oscillators; RF signals;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2002.802336

Filename

1028971