Polar modulation transmission apparatus and wireless...

Details Polar modulation transmission apparatus and wireless... Polar modulation transmission apparatus and wireless...

2006-03-02

2008-11-25

Vuong, Quochien B (Department: 2618)

Telecommunications

Transmitter

Amplitude modulation

C455S110000, C455S127100, C330S295000

Reexamination Certificate

active

07457592

ABSTRACT:
Polar modulation transmission apparatus capable of suppressing power loss of a battery supply line to a high-frequency power amplifier regardless of whether transmission power is high or low is provided. Operation control section (120) performing control in such a manner that a battery voltage (S21) converted as a result of operation of a DC/DC converter (111) is applied to amplitude signal amplifying section (106) or halting operation of the DC/DC converter (111) in such a manner that battery voltage (S20) is applied directly from the battery (130) based on a transmission power control signal (S14). As a result, when transmission power is low, power loss at the amplitude signal amplifying section (106) is suppressed by DC/DC converter (111), unnecessary operation of DC/DC converter (111) is halted when transmission power is high, and power loss can be suppressed regardless of whether transmission power is high or low.

REFERENCES:
patent: 6002923 (1999-12-01), Sahlman
patent: 6377784 (2002-04-01), McCune
patent: 6816016 (2004-11-01), Sander et al.
patent: 7072626 (2006-07-01), Hadjichristos
patent: 7109897 (2006-09-01), Levesque
patent: 2003/0160658 (2003-08-01), Cioffi et al.
patent: 2001320288 (2001-11-01), None

Affiliated with

Also associated with

Rating

Polar modulation transmission apparatus and wireless... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polar modulation transmission apparatus and wireless..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polar modulation transmission apparatus and wireless... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4033546