Resources Contact Us Home
Tuner for reception of a broadband radio frequency signal

Image Number 3 for United States Patent #7236760.

A tuner is provided for selecting a channel from a broadband radio frequency input signal containing a plurality of channels, such as a terrestrial broadcast signal. The tuner has an input which supplies the broadband signal to a filter. The output of the filter is connected to a mixer of a single frequency changer, which converts the selected channel to a predetermined non-zero intermediate frequency. The filter is a tracking radio frequency filter which tracks the frequency of the selected channel so as to attenuate the image channel. A controller receives from a demodulator a signal representing reception quality, such as bit error rate, and adjusts the tracking of the filter so as to achieve acceptable reception quality, such as an adequately low bit error rate. Alignment of the filter during manufacture is not, therefore, required.

  Recently Added Patents
Thermochromic microparticles, dispersions thereof, and manufacturing method thereof, as well as light-modulating coatings, light-modulating films and light-modulating inks
Magnifying glass
Elastic polypropylene-based film compositions
FET device having ultra-low on-resistance and low gate charge
Toy track intersection component
Circuit arrangement for a piezo transformer, and method therefor
Method and apparatus to maintain welding current to compensate for deterioration of welding contact tip
  Randomly Featured Patents
Tire tread
Systems and methods for the rapid deployment of piping
Data protection system for controlling data entry point employing RFID tag
Printing system particle removal device and method
Method for defluorinating wet process phosphoric acid
Method for compressing video information
Metal detector
Cell controller having a unit cell voltage detecting section
Floppy disk enclosure