Title :
A Novel Multiple-Element Phased High-Order Subharmonic Self-Oscillating Mixer for Millimeter-Wave Receivers
Author :
Winkler, Simone A. ; Han, Liang ; Wu, Ke ; Stelzer, Andreas
Author_Institution :
Poly-Grames Res. Center, Johannes Kepler Univ. Linz, Linz
Abstract :
A novel technique for multiple-element phased high-order subharmonic self-oscillating mixers (SOMs) is presented. SOMs are excellent choices for a low-cost receiver design as both the oscillating source and the mixer are combined in one single device. The presented structure is of high interest for high-end millimeter-wave systems as subharmonic operation reduces local oscillator (LO) frequency requirements. In this paper, an outline of the basic theory and a general design procedure for arbitrary mixing orders are presented, and a 6th-order SOM is fabricated for the first time to the authors´ knowledge in order to verify the proposed technique. The prototype exhibits a conversion gain of +2.8 dB at an RF input frequency of 7.4 GHz. In this paper, the design of the complete circuit structure is presented in theory and verified with measured results.
Keywords :
microwave mixers; microwave oscillators; millimetre wave receivers; arbitrary mixing orders; complete circuit structure; frequency 7.4 GHz; gain 2.8 dB; high-order subharmonic self-oscillating mixers; local oscillator frequency; low-cost receiver; millimeter-wave receivers; multiple element phase; Circuits; Diodes; Local oscillators; Microwave FETs; Millimeter wave communication; Millimeter wave radar; Millimeter wave technology; Millimeter wave transistors; Mixers; Radio frequency;
Conference_Titel :
Microwave Conference, 2008. EuMC 2008. 38th European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-006-4
DOI :
10.1109/EUMC.2008.4751413