Oscillators – Automatic frequency stabilization using a phase or frequency... – Plural oscillators controlled
Reexamination Certificate
2006-12-26
2006-12-26
Kinkead, Arnold (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
Plural oscillators controlled
C331S046000, C455S255000, C455S259000, C455S260000, C455S264000, C455S265000, C455S075000, C455S076000, C455S078000
Reexamination Certificate
active
07154341
ABSTRACT:
A communication semiconductor integrated circuit device includes an RFVCO and a TXVCO and is formed over one semiconductor substrate, and has a first operation mode (idle mode) which does not perform transmission and reception, a second operation mode (warmup mode) which performs a preparation prior to the start of transmission or reception, and a third operation mode (transmission or reception mode) which performs transmission or reception. In the first operation mode, two oscillators are deactivated, and the operation of selecting a frequency band to be used in at least the TXVCO which generates a transmit signal, is performed in the second operation mode. In the communication semiconductor integrated circuit device, a high frequency signal generator which generates a signal having a desired frequency with an oscillation signal outputted from a crystal oscillator as a reference signal, a reception system circuit (RXC) including a frequency converter, and a transmission system circuit (TXC) including the TXVCO which generates the transmit signal, are respectively formed in different semiconductor regions isolated by insulators.
REFERENCES:
patent: 6766178 (2004-07-01), Damgaard et al.
patent: 2003-152535 (2003-05-01), None
Kurakami Noriyuki
Oosawa Hirotaka
Shinbo Jiro
Uozumi Toshiya
Yamamoto Satoru
Kinkead Arnold
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Renesas Technology Corp.
LandOfFree
Communication semiconductor integrated circuit device and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Communication semiconductor integrated circuit device and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communication semiconductor integrated circuit device and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3688000