Invention Grant
- Patent Title: Mobile station traffic state antenna tuning systems and methods
- Patent Title (中): 移动台流量状态天线调谐系统及方法
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Application No.: US11062239Application Date: 2005-02-17
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Publication No.: US08396431B2Publication Date: 2013-03-12
- Inventor: Henry Chang , Jorge Fabrega-Sanchez , Gregory Poilasne
- Applicant: Henry Chang , Jorge Fabrega-Sanchez , Gregory Poilasne
- Applicant Address: JP Kyoto
- Assignee: KYOCERA Corporation
- Current Assignee: KYOCERA Corporation
- Current Assignee Address: JP Kyoto
- Main IPC: H04B1/40
- IPC: H04B1/40

Abstract:
Wireless communication device antenna matching circuit tuning responsive to power control signals, and, optionally, responsive to received signal quality indicators in a traffic channel. Systems and methods are provided that increase the antenna efficiency in either the transmit frequency or the receive frequency as needed, based on fading and environmental conditions, non-ideal antenna efficiency balance, mobile station forward versus reverse link usage and system forward versus reverse link usage. The antenna efficiency may be changed incrementally or may be optimized completely for the transmit frequency or the receive frequency. The re-balancing is accomplished by tuning the antenna matching circuit. One way to tune the antenna matching circuit is to apply a voltage to a ferro-electric capacitor in the matching circuit, thereby changing the capacitance of the ferro-electric capacitor, thereby changing the impedance of the antenna system.
Public/Granted literature
- US20060183431A1 Mobile station traffic state antenna tuning systems and methods Public/Granted day:2006-08-17
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