Local oscillator clock signals
AssigneeIcera Inc.
InventorsAbdellatif Bellaouar, See Taur Lee
Life of this patent
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Abstract
An apparatus and method for generating complementary periodic signals for a mixer circuit is provided. The apparatus comprises first and second generation circuits each for generating a periodic signal with a transition time on each rising edge different than a transition time on each falling edge. Each of the first and second generation circuits has an output for supplying its periodic signal to a mixer such that each rising edge of a periodic signal from one of the circuits crosses each falling edge of a periodic signal from the other of the circuits at a crossing point below a turn on voltage of the mixer.
Claims16
An apparatus for generating complementary periodic signals for a mixer circuit, the apparatus comprising:
- first and second generation circuits each for generating a periodic signal with a transition time on each rising edge different than a transition time on each falling edge, each circuit having an output for supplying its periodic signal to a mixer such that each rising edge of a periodic signal from one of the circuits crosses each falling edge of a periodic signal from the other of the circuits at a crossing point below a turn on voltage of the mixer.
A method of generating complementary periodic signals for a mixer, the method comprising:
- generating first and second periodic signals with a transition time on each rising edge different than a transition time on each falling edge, from each of a first and second generation circuit;
- supplying the first periodic signal at a first output for connection to the mixer;
- and
- supplying the second periodic signal at a second output for connection to the mixer, such that each rising edge at the first output is timed to cross each falling edge at the second output at a crossing point below a turn on voltage of the mixer.
A CMOS passive mixer comprising a first and second transistor, the CMOS passive mixer further comprising:
- first and second generation circuits each for generating a periodic signal with a transition time on each rising edge different than a transition time on each falling edge, each circuit having an output for supplying its periodic signal to a mixer such that each rising edge of a periodic signal from one of the circuits crosses each falling edge of a periodic signal from the other of the circuits at a crossing point below a turn on voltage of the mixer;
- wherein the periodic signal from the first generation circuit controls the first transistor and the periodic signal from the second generation circuit controls the second transistor such that only one of the first and second transistors is turned on at any one time.
Dependencies are inferred from the claim text.