Scanning RF receiver
AssigneeAudiotel International Ltd.
InventorsAndrew Barry Stephen, Steven J. Holmes, Keith Raymond Fuller
Life of this patent
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Abstract
A receiver for analyzing input RF signals includes a first stage that includes an input for receiving one or more RF signals for analysis and a first local oscillator having an output including a first plurality of frequencies. The input is mixed with the local oscillator output in a first mixer to generate a first intermediate frequency spectrum output. A second stage includes a second local oscillator adapted to produce as output a sweep signal traversing a second plurality of frequencies and a second mixer for combining the second local oscillator output with the first intermediate frequency output to generate a second intermediate frequency output.
Claims20
A receiver for analyzing one or more input signals, comprising
- a first stage including an input for receiving an RF signal for analysis, a first local oscillator having an output comprising a first plurality of frequencies such that there are multiple frequencies present on the output at the same time, a first mixer for combining said signal input and said local oscillator output to generate a first intermediate frequency spectrum output;
- a second stage including a second local oscillator adapted to produce as output a sweep signal traversing a second plurality of frequencies, a second mixer for combining said second local oscillator output with said first intermediate frequency output to generate a second intermediate frequency output.
A receiver for analyzing one or more input signals, comprising a first stage including:
- an input for receiving an input signal for analysis,
- means for dividing the input signal spectrum into a plurality of frequency bands such that there are multiple frequency bands present at the same time,
- means for superposing signals in each of said frequency bands to form a first intermediate frequency spectrum output;
- said receiver further comprising a second stage including:
- means for scanning said first intermediate frequency spectrum output to identify peaks therein.
A method of operating a receiver for analyzing one or more input signals, comprising the steps of:
- receiving one or more input signals;
- dividing the input signal spectrum into a plurality of frequency bands such that there are multiple frequency bands present at the same time;
- superposing signals in each of said frequency bands to form a first intermediate frequency spectrum output;
- scanning said first intermediate frequency spectrum output to identify peaks therein.
Dependencies are inferred from the claim text.