Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
2005-02-10
2009-06-23
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
Reexamination Certificate
active
07551127
ABSTRACT:
A reconfigurable downconverter (10) for a multi-band positioning receiver is operable with an RF synthesizer (18) with fixed output frequency, and a fixed wideband RF input (28). The downconverter (10) includes an RF mixer (12) operable to accept a range of frequencies that encompass the GPS and Galileo frequency bands and to output a downconverted IF signal (32). A fixed frequency local oscillator signal (34) is coupled to the RF mixer (12). At least one IF processor14further downconverts the downconverted IF signal (32) to at least one baseband signal (22). At least one of the IF processors (14) is reconfigurable for different frequency bands.
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Phase Locked Loop Basics- An introduction to Phase Locked Loop.
Dubash Noshir B.
King Thomas M.
Davis Valerie M.
Mancini Brian M.
Motorola Inc.
Nguyen Nga X
Tarcza Thomas H
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