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.

Date of Patent:
Apr. 09, 2019

Filed:

Jan. 19, 2018
Applicant:

Silicon Laboratories Inc., Austin, TX (US);

Inventors:

Rangakrishnan Srinivasan, Austin, TX (US);

Sriharsha Vasadi, Austin, TX (US);

Zhongda Wang, Sunnyvale, CA (US);

Mustafa H. Koroglu, Austin, TX (US);

John M. Khoury, Austin, TX (US);

Aslamali A. Rafi, Austin, TX (US);

Michael S. Johnson, Austin, TX (US);

Francesco Barale, Westborough, MA (US);

Sherry Xiaohong Wu, Austin, TX (US);

Assignee:

Silicon Laboratories Inc., Austin, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/04 (2006.01); H03F 3/195 (2006.01); H03F 3/213 (2006.01); H03F 3/45 (2006.01); H03K 3/017 (2006.01); H03F 1/32 (2006.01); H03K 3/0231 (2006.01);
U.S. Cl.
CPC ...
H04B 1/0475 (2013.01); H03F 1/3205 (2013.01); H03F 3/195 (2013.01); H03F 3/213 (2013.01); H03F 3/45179 (2013.01); H03F 3/45636 (2013.01); H03K 3/017 (2013.01); H03F 1/3211 (2013.01); H03F 2200/171 (2013.01); H03F 2200/451 (2013.01); H03K 3/0231 (2013.01);
Abstract

In an embodiment, an apparatus includes: a transmit circuit to upconvert a baseband signal to a first differential radio frequency (RF) signal, the transmit circuit to convert the first differential RF signal to a first single-ended RF signal; a duty cycle correction circuit coupled to the transmit circuit to receive the first single-ended RF signal and compensate for a duty cycle variation in the first single-ended RF signal to output a duty cycle-corrected RF signal; a conversion circuit to convert the duty cycle-corrected RF signal to a second differential RF signal; and an interface circuit to transfer the second differential RF signal from a first ground domain to a second ground domain.


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