Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se
Reexamination Certificate
2007-07-24
2007-07-24
Deb, Anjan (Department: 2858)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
C324S076230
Reexamination Certificate
active
10967877
ABSTRACT:
A Vector Network Analyzer is equipped with receivers for measuring a1, b1, a2and b2and which can each be tuned to track either the RF signal (F1) applied to the FTD or to the IF (F2) produced by the FTD. Additional forward side and reverse side mixers are provided and are driven by the auxiliary LO for the FTD. The additional mixers can be located in the RF/IF path, such that there is a sequential double conversion of the RF/IF: one by the auxiliary LO followed by another conversion of those results by the main LO. The additional mixers could also be located it the LO path, such that the main LO is first converted to an image involving the auxiliary LO, and the RF/IF is then subsequently converted using that image as an ‘artificial’ LO. During a forward direction measurement of an FTD, the applied RF signal (F1) is converted to the IF with the additional forward side mixers that feeds the receivers for a1and b1. This references the forward measurements to F2and allows the FTD's input reflection and forward conversion magnitude and phase to be determined. A companion reverse direction measurement is to set the swept RF source to F2of the FTD's output. The additional reverse side mixers convert F2back to F1so that receivers for a2and b2are at the same frequency at the FTD's input port. This references the reverse measurements to F1. The FTD's output reflection and reverse conversion magnitude and phase can be determined.
REFERENCES:
patent: 6064694 (2000-05-01), Clark et al.
patent: 6300775 (2001-10-01), Peach et al.
patent: 6448786 (2002-09-01), Dunsmore et al.
patent: 6529844 (2003-03-01), Kapetanic et al.
patent: 6690722 (2004-02-01), Dunsmore et al.
patent: 7002335 (2006-02-01), Shoulders
Agilent Technologies, Inc., “Improving Network Analyzer Measurements Of Frequency-Translating Devices”, Application Note 1287-7, pp. 1-40.
Agilent Technologies, Inc. “Agilent PN 8753-2 RF Compoment Measurements—Mixer Measurements Using the 8753B Network Analyzer”, pp. 1-16, printed in U.S.A. Nov. 2000.
Joel Dunsmore, “Novel Method for Victor Mixer Characterization and Mixer Test System Vector Error Correction”, pp. 1833-1836, IEEE MTT-S Digest 2002.
C.J. Clark, A.A. Moulthrope, M.S. Muha and C.P. Silva; “Network Analyzer Measuremetn of Frequency-Translating Devices”, Microwave Journal Nov. 1996, pp. 114-126.
Anderson Keith F.
Hawkins Richard R.
Lui James C.
Wong Kenneth H.
Agilent Technologie,s Inc.
Deb Anjan
Dole Timothy J
LandOfFree
Vector network analyzer with independently tuned receivers... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vector network analyzer with independently tuned receivers..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vector network analyzer with independently tuned receivers... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3756002