The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2013
Filed:
Aug. 11, 2011
Omid Oliaei, Tempe, AZ (US);
David Newman, Tempe, AZ (US);
Benjamin Gilsdorf, Phoenix, AZ (US);
Patrick L. Rakers, Scottsdale, AZ (US);
Omid Oliaei, Tempe, AZ (US);
David Newman, Tempe, AZ (US);
Benjamin Gilsdorf, Phoenix, AZ (US);
Patrick L. Rakers, Scottsdale, AZ (US);
Fujitsu Semiconductor Limited, Yokohama-shi, JP;
Abstract
In accordance with some embodiments of the present disclosure, a multi-band transmitter comprises a plurality of band paths with each band path configured for a different frequency range. Each band path comprises a modulator configured to modulate a data signal onto a carrier signal associated with the frequency range of the band path to generate a radio frequency (RF) signal associated with the band path and frequency range of the band path. Each band path also comprises a step-down balun that includes an input coil configured to receive the RF signal from the modulator. Each band path further comprises a tuner configured to tune the input coil to the frequency range of the band path. The tuner is also configured to compensate for off-state conduction of switches of the tuner to reduce non-linear tuning effects of the balun associated with the off-state conduction.