Phase shifter

Details Phase shifter Phase shifter

2006-10-24

2006-10-24

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

C333S138000

Reexamination Certificate

active

07126442

ABSTRACT:
A phase shifter comprises: a phase shift unit including a reactance unit having a first variable capacitance device, and a susceptance unit having a second variable capacitance device, T-connected to the reactance unit; and a control unit for outputting a control signal continuously changing the capacitance of the first variable capacitance device and the second variable capacitance device to the phase shift unit. The amount of phase shift can be continuously changed by changing these variable capacitance devices continuously. Moreover, these devices can be formed on a semiconductor, thereby realizing low-voltage driving and high-speed response. Furthermore, the variance of impedance can be prevented by adjusting these two variable capacitance devices, whereby transmission efficiency can be improved.

REFERENCES:
patent: 1968237 (1934-07-01), Weyers
patent: 3718873 (1973-02-01), Garver
patent: 3778733 (1973-12-01), Rizzi
patent: 3882431 (1975-05-01), Hopwood et al.
patent: 4630010 (1986-12-01), Yarman
patent: 4837532 (1989-06-01), Lang
patent: 5422607 (1995-06-01), McEwan
patent: 5471220 (1995-11-01), Hammers et al.
patent: 5519349 (1996-05-01), Nakahara
patent: 5734349 (1998-03-01), Lenormand et al.
patent: 5955971 (1999-09-01), Uemura
patent: 6020795 (2000-02-01), Kim
patent: 6320480 (2001-11-01), Kintis et al.
patent: 6603367 (2003-08-01), Pao et al.
patent: 6683513 (2004-01-01), Shamsaifar et al.
patent: 6751465 (2004-06-01), Nakada
patent: 0 403 176 (1996-04-01), None
patent: 0 732 808 (2003-06-01), None
patent: 7-99424 (1995-04-01), None
patent: 11-168354 (1999-06-01), None
patent: 2000-315902 (2000-11-01), None
patent: 2001-196804 (2001-07-01), None
Nancy E. Hodges and Michael H. Yam, “A Precise Analog Phase Shifter for SHF SATCOM Phased Arrays,” GaAs IC Symposium pp. 29-32.

Affiliated with

Also associated with

Rating

Phase shifter does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3682946