Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Reexamination Certificate
2008-01-01
2008-01-01
West, Lewis (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Having measuring, testing, or monitoring of system or part
C455S067110, C343S756000
Reexamination Certificate
active
07315728
ABSTRACT:
A phase shift section phase-shifts the second band-restricted signal to a first phase-shifted signal and a second phase-shifted signal having a phase that is different from the phase of the first phase-shifted signal by 90 degrees. A first signal mixing section mixes the first band-restricted signal and the first phase-shifted signal. A second signal mixing section mixes the second band-restricted signal and the second phase-shifted signal. A phase difference calculation section calculates the phase difference value from the first mixed signal and the second mixed signal stripped of frequencies other than a desired baseband frequency. A polarization calculation section calculates reception polarization from the first reception field intensity value, second reception field intensity value and phase difference value.
REFERENCES:
patent: 4107678 (1978-08-01), Powell
patent: 4313220 (1982-01-01), Lo et al.
patent: 4323899 (1982-04-01), Barnes et al.
patent: 5185608 (1993-02-01), Pozgay
patent: 5420590 (1995-05-01), Shea
patent: 5568158 (1996-10-01), Gould
patent: 5712641 (1998-01-01), Casabona et al.
patent: 5844950 (1998-12-01), Aono et al.
patent: 5943372 (1999-08-01), Gans et al.
patent: 5959592 (1999-09-01), Petruzzelli
patent: 6442371 (2002-08-01), Lyu
patent: 7130577 (2006-10-01), Nakamura
patent: 2002/0102951 (2002-08-01), Nakano et al.
patent: 2003/0027586 (2003-02-01), Johnson et al.
patent: 4327231 (1996-02-01), None
patent: 2750209 (1997-12-01), None
English Language Abstract of DE 43 27 231, Feb. 1995.
English Language Abstract of FR 2 750 209, Dec. 1997.
“IEEE Standard Test Procedures For Antennas”, published Dec. 19, 1979, ANSI/IEEE Std. 149-1979.
“Polarization Measurement: Part 2” Watkins-Johnson Company, Tech-Notes, vol. 15, No. 1, published Jan. 1988, reference XP002443772.
Koyanagi Yoshio
Mimura Masahiro
Miyano Kentaro
Nakagawa Yoichi
Greenblum & Bernstein P.L.C.
Matsushita Electric - Industrial Co., Ltd.
West Lewis
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