Transmitter and a method for transmitting data

Details Transmitter and a method for transmitting data Transmitter and a method for transmitting data

2011-07-12

2011-07-12

Pope, Daryl (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S505000, C340S539100, C340S870030, C340S870030, C340S870030, C340S870030

Reexamination Certificate

active

07978073

ABSTRACT:
An excitation reference source (FC) is split through a 90 degree splitter. One output from the splitter is fed to the LO port of a mixer. Data is fed to the mixer's IF port and causes PRK modulation of the LO port's signal. The output of the mixer at the RF port is a PRK modulated quadrature signal. This is attenuated and added back onto the reference by a zero degree combiner ready for transmission to the transponder.

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