Patent ID: 6108527
Filing Date: 2000-08-22
Classification: H03G,H04B

Abstract:
A multiple band radio frequency (RF) signal detection circuit for detecting signal strength of RF signals at a plurality of frequency bands, said signal detection circuit comprising:a first detector device producing a first detector signal current, said first detector signal current related to a first RF signal strength at a first frequency band;a second detector device producing a second detector signal current, said second detector signal current related to a second RF signal strength at a second frequency band;a load developing impedance for receiving said first detector signal current and said second detector signal current, said load developing impedance converting said first detector signal current to a first detector signal voltage and said second detector signal current to a second detector signal voltage; andan amplifier for providing an amplified output of said first detector signal voltage if a first RF signal is present and an amplified output of said second detector signal voltage if a second RF signal is present.