H - Electricity – 03 – L
Patent
H - Electricity
03
L
H03L 7/085 (2006.01) H03D 7/16 (2006.01) H03L 7/183 (2006.01) H04B 7/185 (2006.01)
Patent
CA 2139191
The present invention relates to a transmit reference oscillator for a remote station of a VSAT for satellite communications. comprises a by-fifteen divider for dividing input reference signals by 15: a Voltage Controlled Oscillator (VCO) for outputting oscillation signals; a by-four divider for dividing the oscillating signals outputted from said voltage controlled oscillator: a by-N divider for dividing by N the signals divided by said by-N divider; a phase detector for outputting phase difference signals, which are the signals of the phase differences obtained by comparing the output signals of said by-N divider and those of said by-fifteen divider; and a low pass filter for varying the oscillation signals of said voltage controlled oscillator by filtering the difference signals outputted from said phase detector and applying the filtered difference signals to said voltage controlled oscillator. Accordingly, the present invention not only can transmit data over the whole band of 500 MHz which is a bandwidth for satellite communication transponders, without modifying a remote station or a Radio Frequency (RF) part of a VSAT, but also is proof against phase noises and spurious, and can be simply implemented to reduce its size and lower its price.
Chang Dae Ig
Kim Jeong Ho
Electronics And Telecommunications Research Institute
Korea Telecommmunication Authority
Smart & Biggar
LandOfFree
Transmit reference oscillator of a vsat for satellite... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmit reference oscillator of a vsat for satellite..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmit reference oscillator of a vsat for satellite... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1404909