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US 2014/0370831 A1Published application
Wide tuning range receiver
AssigneePC-Tel, Inc.
InventorsWei Lu, John Kyechong Kim
Life of this patent
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Abstract
A wide tuning range receiver is provided that includes first and second mixers, and first and second local oscillators. The first mixer can mix an input signal with a signal from the first local oscillator and output a signal having a first intermediate frequency, the second mixer can mix the signal having the first intermediate frequency with a signal from the second local oscillator and output a signal having a second intermediate frequency, and, for each input signal frequency, a relationship between the first and second local oscillators can be fixed.
Claims20
An apparatus comprising:
- first and second mixers;
- and
- first and second local oscillators,
- wherein the first mixer mixes an input signal with a signal from the first local oscillator and outputs a signal having a first intermediate frequency,
- wherein the second mixer mixes the signal having the first intermediate frequency with a signal from the second local oscillator and outputs a signal having a second intermediate frequency, and
- wherein, for each input signal frequency, a relationship between the first and second local oscillators is fixed.
3 more elements
A method comprising:
- a first mixer mixing an input signal with a signal from a first local oscillator;
- the first mixer outputting a signal having a first intermediate frequency;
- a second mixer mixing the signal having the first intermediate frequency with a signal from a second local oscillator;
- and
- the second mixer outputting a signal having a second intermediate frequency,
- wherein, for each input signal frequency, a relationship between the first and second local oscillators is fixed,
- wherein a tuning range for the input signal is wide,
- wherein the first intermediate frequency is narrower than the tuning range for the input signal, and
- wherein second intermediate frequency is fixed.
6 more elements
Dependencies are inferred from the claim text.