Radio frequency device for receiving TV signals and GPS satellite signals and performing positioning

A receiver for processing television signals and GPS signals for position determination comprising:

• a first antenna for receiving at least one first signal at a first frequency;
• a first low noise amplifier for amplifying the at least one first signal;
• a second antenna for receiving at least one second signal at a second frequency;
• a second low noise amplifier for amplifying the at least one second signal;
• a first frequency converter having a first frequency converter input and a first frequency converter output, the first frequency converter input coupled to the first low noise amplifier for performing frequency conversion on the at least one first signal;
• a switch having a first switch input, a second switch input and a switch output, the first switch input coupled to the first frequency converter output, the second switch input coupled to the second low noise amplifier, the switch for selecting between the at least one first signal or the at least one second signal;
• a bandpass filter coupled to the switch output for filtering the at least one first signal or the at least one second signal;
• a second frequency converter coupled to the bandpass filter for converting the at least one first signal or the at least one second signal to a post-frequency converter signal at a third frequency;
• an analog-to-digital converter coupled to the second frequency converter for digitizing the post-converter signal and generating a digitized signal;
• and
• a processor coupled to the analog-to-digital converter for accepting the digitized signal and for converting the digitized signal into a position information.

A receiver for processing television signals and GPS signals for position determination comprising:

• an antenna system for receiving a plurality of signals selected from the group comprising at least one television signal and at least one GPS signal, wherein the at least one television signal operates at a first frequency and the at least one GPS signal operates at a second frequency;
• a low noise amplifier coupled to the antenna system for amplifying the plurality of signals;
• an I/Q downconverter coupled to the low noise amplifier for downconverting the plurality of signals to a third frequency and for generating an I component and a Q component for each of the plurality of signals;
• a first low pass filter coupled to the I/Q downconverter for filtering the I component;
• a second low pass filter coupled to the I/Q downconverter for filtering the Q component;
• a first analog-to-digital converter coupled to the first low pass filter for digitizing the I component and generating a digitized I component;
• a second analog-to-digital converter coupled to the second low pass filter for digitizing the Q component and generating a digitized Q component;
• a processing component having a first processing input and a second processing input, the first processing input coupled to the first analog-to-digital converter for accepting the digitized I component, the second processing input coupled to the second analog-to-digital converter for accepting the digitized Q component.

A receiver for processing television signals and GPS signals for position determination comprising:

• an antenna system for receiving a plurality of signals selected from the group comprising at least one television signal and at least one GPS signal, wherein the at least one television signal operates at a first frequency and the at least one GPS signal operates at a second frequency;
• a tunable bandpass filter having an adjustable passband, the tunable bandpass filter coupled to the antenna system for receiving the plurality of signals;
• a low noise amplifier coupled to the tunable bandpass filter for amplifying the plurality of signals;
• an I/Q downconverter coupled to the low noise amplifier for downconverting the plurality of signals to a third frequency and for generating an I component and a Q component for each of the plurality of signals, wherein the I/Q downconverter comprises a first mixer coupled to a local oscillator, and a 90 degree phase shifter having a shifter input and a shifter output, the shifter input coupled to the local oscillator and the shifter output coupled to a second mixer;
• a first low pass filter coupled to the I/Q downconverter for filtering the I component;
• a second low pass filter coupled to the I/Q downconverter for filtering the Q component;
• a first analog-to-digital converter coupled to the first low pass filter for digitizing the I component and generating a digitized I component;
• a second analog-to-digital converter coupled to the second low pass filter for digitizing the Q component and generating a digitized Q component;
• a processing component having a first processing input and a second processing input, the first processing input coupled to the first analog-to-digital converter for accepting the digitized I component, the second processing input coupled to the second analog-to-digital converter for accepting the digitized Q component, wherein the processing component converts the digitized I component and the digitized Q component into a position information.