Communication semiconductor integrated circuit and radio...

Details Communication semiconductor integrated circuit and radio... Communication semiconductor integrated circuit and radio...

2007-12-25

2007-12-25

Milord, Marceau (Department: 2618)

Telecommunications

Transmitter and receiver at same station

With frequency stabilization

C455S552100, C455S073000, C455S260000, C455S265000, C455S333000, C455S323000, C331S046000, C331S047000, C331S048000, C331S051000

Reexamination Certificate

active

11122062

ABSTRACT:
A communication semiconductor integrated circuit has an oscillator circuit forming part of a transmission PLL circuit fabricated on a single semiconductor chip together with an oscillator circuit forming part of a reception PLL circuit and an oscillator circuit for an intermediate frequency. The oscillator circuit forming part of the transmission PLL circuit is configured to be operable in a plurality of bands. A circuit for measuring the oscillating frequency of the oscillator circuit forming part of the transmission PLL circuit is also used for measuring the oscillating frequency of the oscillator circuit forming part of the reception PLL circuit or for measuring the oscillating frequency of the oscillator circuit for the intermediate frequency.

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patent: 2357381 (2001-06-01), None

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