The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 2009
Filed:
May. 03, 2007
Tatsuo Itoh, Rolling Hills, CA (US);
Kevin M. K. H. Leong, Los Angeles, CA (US);
Alexandre Dupuy, Nice, FR;
Tatsuo Itoh, Rolling Hills, CA (US);
Kevin M. K. H. Leong, Los Angeles, CA (US);
Alexandre Dupuy, Nice, FR;
The Regents of the University of California, Oakland, CA (US);
Abstract
Power combining methods and devices for tunnel diode oscillators using the infinite wavelength phenomenon observed in composite right/left-handed (CRLH) meta-material lines are described. One implementation utilizes a series combiner composed of zero degree lines, with each oscillator output port connected directly to the line and combined in-phase, to equally combine the power in phase. In a second implementation, a section of zero degree transmission line implements a stationary wave resonator with oscillators loosely coupled to the resonator, where the wave amplitude and phase are constant along the line. In one test of this second implementation a maximum power combining efficiency of 131% was obtained with the zeroorder resonator with two tunnel diodes oscillators at 2 GHz.