Communications: directive radio wave systems and devices (e.g. – Determining distance – Altimeter
Reexamination Certificate
2005-05-17
2005-05-17
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Altimeter
C063S033000, C063S033000, C063S033000, C063S033000
Reexamination Certificate
active
06894640
ABSTRACT:
An in-phase/quadrature component (IQ) mixer is configured to reject returns from a negative doppler shift swath in order to mitigate corruption of returns of a positive doppler shift swath. The mixer includes a sample delay element which produces a quadrature component from the in-phase component of an input signal. Further included are a plurality of mixer elements, a plurality of low pass filters, a plurality of decimators, and a plurality of all pass filters which act upon both the in-phase and quadrature components of the input signal. Also, a subtraction element is included which is configured to subtract the filtered and down sampled quadrature component from the filtered and down sampled in-phase component.
REFERENCES:
patent: 3983558 (1976-09-01), Rittenbach
patent: 4005423 (1977-01-01), Webb
patent: 4136342 (1979-01-01), Alcock et al.
patent: 4164036 (1979-08-01), Wax
patent: 4310894 (1982-01-01), Lee et al.
patent: 4328495 (1982-05-01), Thue
patent: 4404562 (1983-09-01), Kretschmer, Jr. et al.
patent: 4553221 (1985-11-01), Hyatt
patent: 4684950 (1987-08-01), Long
patent: 4851852 (1989-07-01), Bjorke et al.
patent: 5107268 (1992-04-01), Sturm et al.
patent: 5140331 (1992-08-01), Aulenbacher et al.
patent: 5150125 (1992-09-01), Hager
patent: 5173706 (1992-12-01), Urkowitz
patent: 5264853 (1993-11-01), Sturm et al.
patent: 5309161 (1994-05-01), Urkowitz et al.
patent: 5389931 (1995-02-01), Anderson et al.
patent: 5477226 (1995-12-01), Hager et al.
patent: 5485157 (1996-01-01), Long
patent: 5568150 (1996-10-01), Taylor, Jr. et al.
patent: 5589833 (1996-12-01), Randall et al.
patent: 5892462 (1999-04-01), Tran
patent: 5945926 (1999-08-01), Ammar et al.
patent: 5969667 (1999-10-01), Farmer et al.
patent: 6011505 (2000-01-01), Poehler et al.
patent: 6025800 (2000-02-01), Hager
patent: 6125155 (2000-09-01), Lesthievent et al.
patent: 6148195 (2000-11-01), Schuchman et al.
patent: 6232910 (2001-05-01), Bell et al.
patent: 6260052 (2001-07-01), Song
patent: 6296612 (2001-10-01), Mo et al.
patent: 6297764 (2001-10-01), Wormington et al.
patent: 6337888 (2002-01-01), Huang et al.
patent: 6362776 (2002-03-01), Hager et al.
International Search Report, dated Jan. 27, 2004, Application No. PCT/US 03/14854, 8 pages.
Hager James R.
Henrickson Jens M.
Jordan Lavell
Petrich Curtis J.
Alsomiri Isam
Honeywell International , Inc.
Luxton, Esq. Matthew
Tarcza Thomas H.
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