A phase-conjugating pair of coupled, dual-gate, self-oscillating mixers

✍ Scribed by Michael G. Christodoulou; Dimitrios P. Chrissoulidis

• Book ID: 102521137
• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 302 KB
• Volume: 47
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.21081

✦ Synopsis

Abstract

A novel phase conjugator for active retro‐directive operation is made by using twin, dual‐gate, self‐oscillating mixers mutually locked through a 12‐dB hybrid coupler. The coupling network incorporates the load of both oscillators. Reduced LO penetration is achieved at the IF port in two steps: (i) by trapping the LO signal within the dc bias lines of each self oscillating mixer and (ii) by the out‐of‐phase addition of any LO signal leakage. The input RF signal leaking through the mixers has also been suppressed by out‐of‐phase addition at the IF port. The measured results are presented for a phase conjugator designed for nominal operation at 900 MHz. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 59–62, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21081