Phase shifter with flexible control voltage

Details Phase shifter with flexible control voltage Phase shifter with flexible control voltage

2009-05-18

2010-11-30

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

C333S139000, C333S103000, C333S262000

Reexamination Certificate

active

07843282

ABSTRACT:
The invention provides a phase shifter with flexible control voltage that is useful with all RF systems that phase shift a RF signal. The phase shifter according to the present invention may comprise transistors used as switching elements. In one aspect, the phase shifter provides the option of controlling a phase shifter with either a positive or a negative voltage control signal. For example, the dc ground of the transistors included in the phase shifter may be floated, either fixed or adjusted. The RF grounding of the transistors may be achieved by in-band resonant capacitors. Thus, the control voltage provided to the transistors is flexible in that it may be connected to a positive or negative control voltage, or it may be connected to ground, or it may swing from a positive control voltage to a negative control voltage or vice versa.

REFERENCES:
patent: 4011566 (1977-03-01), Honda
patent: 4121221 (1978-10-01), Meadows
patent: 4123759 (1978-10-01), Hines et al.
patent: 4635062 (1987-01-01), Bierig et al.
patent: 4810911 (1989-03-01), Noguchi
patent: 4872211 (1989-10-01), Chen
patent: 5092783 (1992-03-01), Suarez et al.
patent: 5311156 (1994-05-01), Andoh
patent: 5339083 (1994-08-01), Inami
patent: 5519349 (1996-05-01), Nakahara
patent: 5767721 (1998-06-01), Crampton
patent: 5886671 (1999-03-01), Riemer et al.
patent: 5923289 (1999-07-01), Buer et al.
patent: 5945897 (1999-08-01), Pluymers et al.
patent: 5990580 (1999-11-01), Weigand
patent: 6031188 (2000-02-01), Pluymers et al.
patent: 6102709 (2000-08-01), Howard et al.
patent: 6130570 (2000-10-01), Pan et al.
patent: 6166615 (2000-12-01), Winslow et al.
patent: 6320413 (2001-11-01), Kurisu
patent: 6411523 (2002-06-01), Roberson et al.
patent: 6606073 (2003-08-01), Visser
patent: 6667670 (2003-12-01), Hong et al.
patent: 6693498 (2004-02-01), Sasabata et al.
patent: 6731513 (2004-05-01), Rodgers et al.
patent: 7535320 (2009-05-01), Buer et al.
patent: 7626443 (2009-12-01), Kitazawa et al.
patent: 2002/0030552 (2002-03-01), Hong et al.
patent: 2004/0145429 (2004-07-01), Hieda et al.
patent: 2005/0270119 (2005-12-01), Fukumoto et al.
Miyatsuji K et al: “A GaAs high-power RF single-pole double-throw switch IC for digital mobile communication system” International Solid-State Circuits Conference, Feb. 16-18, 1194, pp. 34-35, XP010121079.
Kohama K et al: “High power DPDT antenna switch MMIC for digital cellular systems” 17th Annual IEEE Gallium Arsenide Integrated Circuit (GAAS IC) Symposium, Oct. 29-Nov. 1, 1995, pp. 75-78, XP010196731.
Communication pursuant to Article 94(3) EPC dated Jul. 18, 2008.
Brief Communication dated Dec. 7, 2009 (Note: error in date—Dec. 2, 2009).
Summons to attend oral proceedings pursuant to Rule 115(1) EPC dated Aug. 24, 2009.
Brief Communication dated Nov. 12, 2009.
Decision of the Examining Division (Report/Minutes dated Jan. 25, 2010).
Rhodes M: “Monolithic phase shifter for S-Band inter-satellite data relay antenna”, IEE Colloquium on Recent Advances in Microwave Sub-Systems for Space and Satellite Applications; Mar. 18, 1993; 6 pgs.
Devlin L: “The design of integrated switches and phase shifters”, IEE Tutorial Colloquium: Design of RFICS and MMICS; Nov. 24, 1999; 14 pgs.
Kusunoki S et al.: “SPD switch MMIC using E/D-mode GaAz JFETs for personal communications”; GAAS IC Symposium, Miami Beach; Oct. 4, 1992; 4 pgs.
Non Final Office Action dated Feb. 25, 2010 for U.S. Appl. No. 12/467,941.
International Search Report and Written Opinion dated Aug. 14, 2006, 9 pages.
International Preliminary Report on Patentability dated Sep. 24, 2007, 11 pages.

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