Patent ID: 8059706

Claim:
A method for wireless communication, the method comprising: delaying a first signal to generate a second signal which is 90Â° phase shifted relative to the first signal, wherein said delaying is performed utilizing a selected portion of a plurality of delay elements and a variable capacitance; mixing said first signal and said second signal to generate a first local oscillator signal that is twice a frequency of said first signal, wherein said first local oscillator signal is utilized for a first frequency conversion and said selected portion of said plurality of delay elements is selected based on a signal strength of said first local oscillator signal; generating, based on said first signal used for said first frequency conversion, a second local oscillator signal utilizing a direct digital frequency synthesizer, wherein said second local oscillator signal is utilized for a second frequency conversion; up-converting a baseband signal to an intermediate frequency signal utilizing said first local oscillator signal; and up-converting said intermediate frequency to a radio frequency suitable for transmission utilizing said second local oscillator signal.