Yufeng Xu

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Nepean, CA

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Patents Grantslast 30 patents

Information Patent Grant
Surface wave device balun resonator filters
- Patent number 5,896,071
- Issue date Apr 20, 1999
- Northern Telecom Limited
- Ji-Dong Dai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Longitudinally coupled double mode surface wave resonators
- Patent number 5,835,990
- Issue date Nov 10, 1998
- Northern Telecom Limited
- John Choo Beng Saw
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Surface wave device with capacitance
- Patent number 5,821,834
- Issue date Oct 13, 1998
- Northern Telecom Limited
- Yufeng Xu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Cascaded surface wave device filters providing balanced and unbalan...
- Patent number 5,790,000
- Issue date Aug 4, 1998
- Northern Telecom Limited
- Ji-Dong Dai
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
BUTLER MATRIX IMPLEMENTATION
- Publication number 20080143601
- Publication date Jun 19, 2008
- TenXc Wireless Inc.
- Yufeng Xu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Recovery of high speed, high bit error rate data
- Publication number 20020176518
- Publication date Nov 28, 2002
- Yufeng Xu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE