Wei Jie Yuan

7187313, Mar 6, 2007

May 17, 2006

11/383758

Wei Yuan - San Diego CA, US

Mediatek Inc. - Hsin-Chu Hsien

H03M 3/00

341143, 341144

A frequency synthesizer includes: a phase detector, a loop filter, a controllable oscillator, a frequency divider, and a sigma-delta modulator for providing the division factor according to an integral part and a fractional part. The sigma-delta modulator includes a controller for providing a first digital value, a second digital value and a third digital value; a first adder for combining the second digital value, the third digital value, and a digital feedback value to generate a combination result; a quantizer for quantizing the combination result to generate a quantization value; a second adder for combining the first digital value and the quantization value to generate the division factor; and a multiplier for multiplying the quantization value by a constant multiplication factor; wherein the controller adjusts the third digital value in response to the reference signal for making an output frequency resolution substantially fixed.

20140056643, Feb 27, 2014

Oct 25, 2013

14/064003

Larry Carlson - Santa Clarita CA, US
Jenn-Ming Yang - Encino CA, US
Wei Yuan - Long Beach CA, US

E01C 7/00

404 31, 404 75

Described herein are methods of improving the durability of concrete by the infusion of the concrete with a low-viscosity oligomeric solution, and subsequent curing of the oligomeric solution to form a high toughness polymer. Also described herein are compositions containing concrete and high toughness polymers, and formed articles made from concrete and high toughness polymers. The methods and compositions are useful for improving the durability of concrete roads and structures, as well as the durability of repairs to concrete roads.