Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Non-linear junction detector










Image Number 7 for United States Patent #6057765.

A non-linear junction detector designed for counter surveillance measures achieves superior performance by using a single circularly polarized antenna to transmit a signal and to receive harmonics of the transmitted signal that are re-radiated by a non-linear junction such as would be found in a eavesdropping device containing a semiconductor. The antenna is mounted on a telescoping antenna extension assembly. A single electrically conductive cable is contained inside the antenna and connects the antenna to the transceiver case which houses the non-linear junction detector electronics. A cable winder is built into the antenna and is employed to provide automatic dispensing and retraction of the cable when the antenna extension assembly is extended or retracted. A display is built into the antenna head assembly to provide signal strength indications and operational information concerning the functioning of the non-linear junction detector to the user of the device. The control signals and power for the display are multiplexed onto the single electrically conductive cable.








 
 
  Recently Added Patents
Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding
X-ray imaging
Facial recognition using a sphericity metric
Soybean cultivar CL1013663
Mobile terminal
Candle holder
High throughput thin film characterization and defect detection
  Randomly Featured Patents
Annular member forming apparatus
Method and apparatus for segmenting images
Production of hardboard in a closed water system
Cash payment for remote transactions
Process for the production of diamond powder
Inertia sensor switch
Apparatus and method for allowing quick activation of electronic equipment, and recording medium having a program stored thereon for performing such method
Micro-electro-mechanical switch beam construction with minimized beam distortion and method for constructing
Push button switch
Electrical connector with improved shell