Resources Contact Us Home
Frequency synthesizer for synthesizing signals of a variety of frequencies by cross modulation

Image Number 7 for United States Patent #5559475.

A frequency synthesizer in which a PLL synthesizer 50 generates signals of frequency steps of an integer times a target frequency step. A base band generator 2 digitally generates sine wave signal components of the target frequency step. The outputs from the PLL synthesizer 50 and the base band generator 2 are cross-modulated by use of a quadrature modulator 1 to change the frequency of the output signals with a change step of the base band generator 2.

  Recently Added Patents
Near-field optical disk having surface plasmon amplification by stimulated emission of radiation
Controller for internal combustion engine
Combination of a microorganism and a phytosphingosine derivative, composition, methods of use
Measuring apparatus for measuring a physical property of a sample
Digital watermark embedding apparatus, digital watermark embedding method, and digital watermark detection apparatus
Method and apparatus for accessing coconut water
System and method for providing security in browser-based access to smart cards
  Randomly Featured Patents
Method of determining semiconductor laser facet reflectivity after facet reflectance modification
Process for the production of sulphur from at least one sour gas containing hydrogen sulphide and a fuel effluent and thermal reactor
Method for fabricating semiconductor devices using strained silicon bearing material
Post-press embossing of a consolidated man-made board
Surface normal compression/decompression storing two vector components
Non-invasive method for detecting and measuring filling material in vessels
Delayed decision switched prediction multi-stage LSF vector quantization
Moisture curable polysiloxane release coating compositions
Control circuit layout for a technological process with a large control range
Cooperative sharing of subscriptions to a subscriber-based network among M2M devices