Interference resistant local oscillator
AssigneeIntel Corporation
InventorsPankaj Goyal, Christopher Hull
Life of this patent
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Abstract
With some embodiments, a VCO (voltage controlled oscillator) operates at an integer multiple (N) above a desired transmission frequency. In accordance with one embodiment, a chip is provided with a VCO to generate a signal and a frequency dividing circuit to provide a reduced frequency version of the signal to a transmit mixer. The transmit mixer is followed by a power amplifier that is on the same die as the VCO. The power amplifier is to generate an OFDM output transmission.
Claims15
A chip comprising:
- a voltage controlled oscillator (VCO) to generate a signal;
- a frequency dividing circuit to provide a reduced frequency version of the signal to a transmit mixer followed by a power amplifier that is on the same die as the VCO;
- and
- a power regulator including a bandgap reference regulator and a higher bandwidth regulator to provide power to the VCO.
The chip of claim, wherein the reference regulator generates a reference voltage off of a transistor matched with and proximal to one or more transistors in the VCO.
A computer system comprising:
- a processor;
- and
- a wireless interface coupled to the processor to communicative link the processor to a wireless network, the wireless interface comprising:
- at least one local oscillator on a chip, the local oscillator including a voltage controlled oscillator (VCO) to provide a signal at N times a transmission frequency,
- a divide-by-N circuit to divide the signal from the VCO by N to be provided at the transmission frequency to a mixer for a higher power stage that is on the same die as the VCO, and
- a power regulator comprising a reference regulator and a higher bandwidth regulator to provide power to the VCO.
Dependencies are inferred from the claim text.