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
DRAM refresh method and system
Adjustable high precision surveying device
Process for the preparation of ethylene homopolymers or copolymers in a high-pressure reactor controlled by a model based predictive controller
Method for driving electrophoretic display device, electrophoretic display device, and electronic device
Vehicle control apparatus
System and method for infrared dongle
Fuser member having composite outer layer
  Randomly Featured Patents
Forms containing removable hang tags and methods of producing the same
Multiblade radial fan and method for making same
Tray transfer system
Load assist device for a suture cartridge
Current sensor
Use of cytokine receptors as biomarkers and therapeutic targets in human cancer
CD player carrying strap
Radiation-curable alkoxy silanized hyperbranched polyester acrylates and preparation thereof
Method and device for encryption/decryption of data on mass storage device
Multi-element circuit construction