Method and apparatus for measuring and cancelling local oscillator feedthrough using an observation receiver

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12261637
APP PUB NO 20220416822A1
SERIAL NO

17358040

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method and apparatus for cancelling local oscillator feedthrough (LOFT). A transmitter includes a first mixer configured to mix a transmit signal with a first local oscillator signal. An observation receiver receives a fraction of a power of the transmit signal as a feedback signal and processes the feedback signal. The observation receiver includes a second mixer configured to mix the feedback signal with a second local oscillator signal. A LOFT correction estimation circuitry is configured to determine a DC offset to cancel LOFT at the first mixer in the transmitter based on measurements on outputs of the second mixer. An LOFT correction circuitry is configured to add the DC offset to the transmit signal. The LOFT correction estimation circuitry may determine the DC offset based on several measurements obtained by varying the DC offset and a phase shift in the second local oscillator signal in the observation receiver.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
INTEL CORPORATION2200 MISSION COLLEGE BOULEVARD SANTA CLARA CA 95054

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Azadet, Kameran San Ramon, US 140 1528
Tiebout, Marc Jan Georges Finkenstein, AT 13 11

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Sep 25, 2028
7.5 Year Payment $3600.00 $1800.00 $900.00 Sep 25, 2032
11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 25, 2036
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00