Patent ID: 6219543
Filing Date: 2001-04-17
Classification: G01R,G06Q,G07F

Abstract:
A radio frequency energy detection device comprising:an antenna for collecting RF energy;a detection network for determining RF field signal strength coupled to said antenna, said detection network comprising:a power source for generating a first voltage reference;a resistive voltage divider coupled to said power source for generating a second lower voltage reference;an RC network having a positive and negative terminal for collecting RF energy, said resistive voltage divider coupled to the negative terminal of said RC network;a diode coupled to said RC network for converting collected RF energy from an AC signal to a DC signal;an operational amplifier having positive and negative inputs and an output, said first reference voltage fed to said operational amplifier positive input, and said operational amplifier negative input coupled to the positive terminal of said RC network; anda transistor coupled to said operational amplifier output for driving said output means; andan output for communicating the results said RF field strength determination to an operator of the energy detection device.