Multiple-band mobile transceiver having a smaller number of loca

Details Multiple-band mobile transceiver having a smaller number of loca Multiple-band mobile transceiver having a smaller number of loca

1997-02-06

1999-10-12

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455 76, 455 78, H04B 138

Patent

active

059666668

ABSTRACT:
A frequency synthesizer consists of a voltage-controlled oscillator and a frequency division and distribution section. The frequency division and distribution section, which splits an oscillation signal of the voltage-controlled oscillator into a transmission modulation local oscillation signal and a reception second local oscillation signal while frequency-dividing the oscillation signal of the voltage-controlled oscillator, includes two pairs of frequency dividers and two switches. The frequency division numbers of the two pairs of frequency dividers are so set as to accommodate all the combinations of mobile communications systems and the transmission modulation local oscillation signal/reception second local oscillation signal. The two switches are switched in accordance with a mobile communications system for which a mobile transceiver is operating. The two local oscillation signals are input to a quadrature modulator and a quadrature demodulator, respectively.

REFERENCES:
patent: 5319798 (1994-06-01), Watanabe
patent: 5319799 (1994-06-01), Morita
patent: 5422931 (1995-06-01), Austin-Lazarus et al.
patent: 5432779 (1995-07-01), Shimo et al.
patent: 5519887 (1996-05-01), Lieu
patent: 5564076 (1996-10-01), Auvray
patent: 5727019 (1998-03-01), Tatsumi
patent: 5732330 (1998-03-01), Anderson et al.
patent: 5757921 (1998-05-01), Okanobu et al.

Affiliated with

Also associated with

Rating

Multiple-band mobile transceiver having a smaller number of loca does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple-band mobile transceiver having a smaller number of loca, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple-band mobile transceiver having a smaller number of loca will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-662213