Title :
A Novel HBT Frequency Doubler Design for Millimeter-Wave Applications
Author :
Johansen, Tom K. ; Krozer, Viktor ; Vidkjaer, Jens ; Djurhuus, Torsten
Author_Institution :
DTU, Tech. Univ. of Denmark, Lyngby
Abstract :
In this paper we present a novel HBT frequency doubler design for millimeter-wave application. HBT frequency doubler theory is described which leads to accurate design equations for improved performance. The developed theory shows that a substantial improvement in the HBT frequency doubler operation can be achieved using a novel second harmonic feedback network. Preliminary measurements on a frequency doubler implemented in a high-speed InP DHBT technology demonstrates an increase in the maximum output power from -14 dBm to -11.5 dBm at an input frequency of 31.4 GHz due to the presence of the second harmonic feedback network. We demonstrate here that the 3 dB improvement in performance is directly due to the feedback mechanism
Keywords :
bipolar MIMIC; circuit feedback; frequency multipliers; harmonics; millimetre wave frequency convertors; 31.4 GHz; HBT frequency doubler; InP; MMIC; coplanar waveguides; design equations; feedback mechanism; high-speed DHBT technology; millimeter-wave frequency doubler; monolithic microwave integrated circuits; second harmonic feedback network; Equations; Feedback; Frequency measurement; Heterojunction bipolar transistors; Indium phosphide; Millimeter wave measurements; Millimeter wave technology; Power generation; Power measurement; Power system harmonics; Coplanar waveguides (CPWs); InP HBT; millimeter-wave frequency doubler; monolithic microwave integrated circuits (MMICs);
Conference_Titel :
Integrated Nonlinear Microwave and Millimeter-Wave Circuits, 2006 International Workshop on
Conference_Location :
Aveiro
Print_ISBN :
0-7803-9722-3
Electronic_ISBN :
0-7803-9723-1
DOI :
10.1109/INMMIC.2006.283521
