Patent ID: 6998979

Claim:
A local area positioning receiver, comprising: a filter configured to accept an input signal including signal components having frequencies in the range of about 900 MHZ to 1 GHz and attenuate signal components having frequencies less than about 900 MHZ and greater than about 1 GHz to output a filtered signal; a mixing amplifier structured to amplify the filtered signal and mix it with a stable mixing signal to produce an intermediate frequency mixed signal; a splitter structured to divide the intermediate frequency mixed signal into a first mixed sub-signal and a second mixed sub-signal; an automatic gain control unit controller coupled to the splitter and structured to receive the first mixed sub-signal; a GaAs amplifier coupled to the splitter and structured to amplify the second mixed sub-signal to produce an amplified second mixed sub-signal; a Shottky diode detector coupled to the GaAs amplifier and structured to receive the amplified second mixed sub-signal and produce a corresponding direct-current detector output signal; a data slicer/comparator operative to receive the detector output signal and produce a corresponding low-voltage transistor-to-transistor logic signal; and a GaAs single-pole double throw switch structured to be actuated by the low-voltage transistor-to-transistor logic signal at a frequency of about 1 GHz.