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
Molded surface of a concrete product
Method and apparatus for modeling computer program behaviour for behavioural detection of malicious program
Distributed mobile access point acquisition
Soybean cultivar CL0911444
Process for preparing MDA via the stage of the aminal
Animation control apparatus, animation control method, and non-transitory computer readable recording medium
Coordinate measuring device and method for measuring with a coordinate measuring device
  Randomly Featured Patents
Method for treating asthma and chronic obstructive pulmonary disease (COPD) comprising administering FGF2
Pet commode
Method and apparatus for fabricating microlenses on optical fibers
Marine shaft seal with lip seal, bearing and gasket
Coffee cup stationery tab
Multi-compartment storage tray for a refrigerator
Semiconductor device and method of manufacturing the same
System and method for handling location services by implementing a new transaction type at the connection-management level
Achromatic optical interferometer, of the trilateral shift type for analyzing the wave surface of a light beam
Method and apparatus for recovering magnetic particles