Dual-frequency matching circuit

Details Dual-frequency matching circuit Dual-frequency matching circuit

2008-10-30

2009-08-04

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Coupling networks

With impedance matching

C333S126000

Reexamination Certificate

active

07570131

ABSTRACT:
The connection topology of input terminals (2), elements (4a, 4b, 4cand4d) and load (5) is designed similarly to a so-called “seven-segment display”, which is often used to display numerals on a calculator or a digital watch. More specifically, suppose in the three horizontally running segments of the seven-segment display, the top and bottom segments are associated with the input terminals (2) and the load (5) is allocated to the other horizontally running segment. Then, the other four vertical segments are associated with the elements (4a, 4b, 4cand4d). By adopting this circuit configuration, the total number of elements can be reduced to four and the loss can be reduced significantly. In addition, since the resonant circuits can be eliminated and the size of the ladder circuit can be reduced, impedance matching is achieved with a high degree of stability in spite of a variation in the impedance of the load5.

REFERENCES:
patent: 5493311 (1996-02-01), Itoh et al.
patent: 6331815 (2001-12-01), Oshima et al.
patent: 6621376 (2003-09-01), Liu et al.
patent: 2005/0270118 (2005-12-01), Shannon
patent: 2006/0261911 (2006-11-01), Fukuda et al.
patent: 57-46384 (1982-03-01), None
patent: 57-46385 (1982-03-01), None
patent: 06-252791 (1994-09-01), None
patent: 2000-077964 (2000-03-01), None
patent: 2004-242269 (2004-08-01), None
patent: 2006-325153 (2006-11-01), None
Co-pending U.S. Application: Continuation Application of PCT/JP2008/002348, filed on Jan. 12, 2009 (U.S. Appl. No. 12/352,122).
Co-pending U.S. Application: Continuation Application of PCT/JP2008/002349, filed on Jan. 12, 2009 (U.S. Appl. No. 12/352,194).
Co-pending U.S. Application: Continuation Application of PCT/JP2008/002350, filed on Jan. 12, 2009 (U.S. Appl. No. 12/352,251).
Co-pending U.S. Application: Continuation Application of PCT/JP2008/002351, filed on Jan. 12, 2009 (U.S. Appl. No. 12/352,156).
Co-pending U.S. Application: Continuation Application of PCT/JP2008/002352, filed on Jan. 12, 2009 (U.S. Appl. No. 12/352,285).
Co-pending U.S. Application: Continuation Application of PCT/JP2008/002353, filed on Jan. 12, 2009 (U.S. Appl. No. 12/352,331).
Co-pending U.S. Application: Continuation Application of PCT/JP2008/000826, filed on Oct. 30, 2008 (U.S. Appl. No. 12/261,576).
Collin, Robert E., An IEEE Press Classic Reissue : “Foundations for Microwave Engineering”, Second Edition, IEEE Press Series on Electromagnetic Wave Theory, IEEE, Wiley-Interscience.

Affiliated with

Also associated with

Rating

Dual-frequency matching circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual-frequency matching circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual-frequency matching circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4087447