Wave transmission lines and networks – Coupling networks – With impedance matching
Reexamination Certificate
2008-05-06
2010-02-02
Jones, Stephen E (Department: 2817)
Wave transmission lines and networks
Coupling networks
With impedance matching
Reexamination Certificate
active
07656249
ABSTRACT:
First, second and third matching parts110, 120, and130are connected in series between a circuit element199whose impedance has a frequency characteristic and a circuitry198having a constant impedance. The second matching part120has the capability of converting impedances. The first matching part110operates as an element having reactance values according to any of frequency bands selected by exclusive switching between on and off of switches118, 119and the third matching part130operates as an element having reactance values according to any of the frequency bands selected by switching between on and off of a switch133, thereby providing matching in each frequency band. A seventh reactance circuit131is configured on the basis of an interdependence relation with the configuration of a fifth reactance circuit115and an eighth reactance circuit132.
REFERENCES:
patent: 6023611 (2000-02-01), Bolin et al.
patent: 6078794 (2000-06-01), Peckham et al.
patent: 2006/0202764 (2006-09-01), Fukuda et al.
patent: 2006/0261911 (2006-11-01), Fukuda et al.
patent: 2007/0018758 (2007-01-01), Fukuda et al.
patent: 2007/0115065 (2007-05-01), Fukuda et al.
patent: 2008/0100383 (2008-05-01), Fukuda et al.
Koji Chiba et al., “Mobile Terminals”, NTT DoCoMo Technical Journal vol. 4, No. 1, Nov. 2001, pp. 6.
Atsushi Fukuda et al., “Multi-band power Amplifier Employing MEMS Switches for Optimum Matching”, C-2-4, Proceedings of Institute of Electronics, Information and Communication Engineers General Conference, 2004, pp. 2 (with Partial English Translation).
Atsushi Fukuda et al., “Power Amplifier for Broadband Applications Beyond the Third Generation—Multi-band, High-efficiency Power Amplifier using MEMS switches for Mobile Terminals - - - ”, NTT DoCoMo Technical Journal vol. 8, No. 3, Oct. 2006, pp. 8.
Atsushi Fukuda, et al., “A Novel Compact Reconfigurable Quad-band Power Amplifier Employing RF-MEMS Switches”, Proceedings of the 36thEuropean Microwave Conference, IEEE, PI, XP031005571, Sep. 1, 2006, pp. 344-347.
Atsushi Fukuda, et al., “A 0.9-5-GHz Wide-Range 1W-Class Reconfigurable Power Amplifier Employing RF-MEMS Switches”, Microwave Symposium Digest, 2006. IEEE MTT-S International, IEEE, PI, XP031018853, Jun. 1, 2006, pp. 1859-1862.
Atsushi Fukuda, et al. “Novel Band-Rconfigurable High Efficiency Power Amplifier Employing RF-MEMS Switches”, IEICE Transactions on Electronics Society, XP001236733, vol. E88-C, No. 11, Nov. 1, 2005, pp. 2141-2149.
Fukuda Atsushi
Narahashi Shoichi
Okazaki Hiroshi
Jones Stephen E
NTT DoCoMo Inc.
Oblon, Spivak, Maier & Neustadt, L.L.P.
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