Back to results
US 2007/0190959 A1Published application
Apparatus and method for frequency conversion with minimized intermodulation distortion
OwnerWoonyun Kim, Hyun-Seok Kiminventors
Life of this patent
Estimating the term…
Abstract
A frequency conversion unit includes a local oscillator, a phase compensator, and a mixer. The local oscillator generates differential original oscillating signals. The phase compensator generates differential compensated oscillating signals mixed with differential received signals by the mixer to generate differential baseband signals. The respective duty cycles of the compensated oscillating signals are adjusted for minimizing intermodulation distortion in the baseband signals.
Claims21
An apparatus for frequency conversion, comprising:
- a local oscillator that generates differential original oscillating signals;
- a phase compensator that generates differential compensated oscillating signals from the original oscillating signals with a respective duty cycle of each of the compensated oscillating signals being adjusted by the phase compensator;
- and
- a mixer that mixes the compensated oscillating signals with differential received signals to generate differential baseband signals.
1 more element
A direct-conversion receiver (DCR) comprising:
- a receiving unit for receiving differential RF signals;
- a frequency conversion unit including:
- a local oscillator that generates differential original oscillating signals;
- a phase compensator that generates differential compensated oscillating signals from the original oscillating signals with a respective duty cycle of each of the compensated oscillating signals being adjusted by the phase compensator;
- and
- a mixer that mixes the compensated oscillating signals with the received signals to generate differential baseband signals;
- and
- a baseband signal processor for receiving and processing the baseband signals.
5 more elements
A method of frequency conversion, comprising:
- generating differential original oscillating signals;
- generating differential compensated oscillating signals from the original oscillating signals;
- adjusting a respective duty cycle of each of the compensated oscillating signals;
- and
- mixing the compensated oscillating signals with differential received signals to generate differential baseband signals.
2 more elements
Dependencies are inferred from the claim text.