Leak power ratio detection circuit, mobile communication...

Details Leak power ratio detection circuit, mobile communication... Leak power ratio detection circuit, mobile communication...

2005-06-28

2005-06-28

Smith, Creighton (Department: 2645)

Telecommunications

Transmitter

Measuring, testing, or monitoring of transmitter

C455S115300, C455S127100

Reexamination Certificate

active

06912377

ABSTRACT:
A squaring circuit squares a radio transmission signal. A band-pass filter extracts a spectrum component corresponding to a desired channel, from that low-frequency component of the output of the squaring circuit, which occurs with a center thereof being present near a DC (Direct Current). A level measuring circuit measures the level of the extracted spectrum component. On the other hand, another band-pass filter extracts, from the output of the squaring circuit, a spectrum component corresponding to spectrum spreading due to a distortion in a transmission circuit. Another level measuring circuit measures the level of this extracted spectrum component. A level radio measuring circuit measures a ratio between the level measured by the level measuring circuit and the level measured by the other level measuring circuit, and produces the measured result as a ratio of a leak power to an adjacent channel.

REFERENCES:
patent: 5699383 (1997-12-01), Ichiyoshi
patent: 5712593 (1998-01-01), Buer et al.
patent: 6230022 (2001-05-01), Sakoda et al.

Affiliated with

Also associated with

Rating

Leak power ratio detection circuit, mobile communication... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Leak power ratio detection circuit, mobile communication..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leak power ratio detection circuit, mobile communication... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3465481