Invention Grant
- Patent Title: Microwave reflector link, and CDMA-spread spectrum reflector apparatus for reduction of unmodulated ambient blockers in reflected data links
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Application No.: US15407170Application Date: 2017-01-16
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Publication No.: US10763587B2Publication Date: 2020-09-01
- Inventor: Mau-Chung Frank Chang , Yanghyo Kim , Adrian Tang , Nacer Chahat
- Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA , CALIFORNIA INSTITUTE OF TECHNOLOGY
- Applicant Address: US CA Oakland US CA Pasadena
- Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA,CALIFORNIA INSTITUTE OF TECHNOLOGY
- Current Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA,CALIFORNIA INSTITUTE OF TECHNOLOGY
- Current Assignee Address: US CA Oakland US CA Pasadena
- Agency: O'Banion & Ritchey LLP
- Agent John P. O'Brien
- Main IPC: H01Q15/14
- IPC: H01Q15/14 ; H01Q1/27 ; H04B1/3827 ; H01Q1/22 ; H01Q1/24 ; H01Q3/26

Abstract:
A system, apparatus and method are disclosed for communicating between a short range wireless (WLAN) user device, such as a wearable, phone, or tablet, with a base station. Traditional low power communication (e.g., WLAN, WiFi, Bluetooth, cellular links, etc.) involve an inefficient amplification process of a signal from the WLAN user to the base station, whereby significant power must be expended in the WLAN user device making it unsuitable in many applications. A reflector link paradigm is disclosed in which the user device communicates by modulating the extent of signal reflected back to the base station. An enhanced reflector is also disclosed which overcomes adverse effects of ambient reflections.
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