发明名称 |
Communications circuitry for an electronic device |
摘要 |
The control of an antenna tuner for a portable electronic device includes closed loop tuning when sufficient transmit power is present. The closed loop tuning commences using a predetermined antenna tuner configuration for an operational band and device state. The closed loop tuning may be constrained by a tuning range associated with the predetermined antenna tuner configuration for the operational band and device state. Also, when transmit power is low or when a transceiver is in a receive only state, open loop tuning may be conducted by placing the antenna tuner in the predetermined (or default) configuration for the operational band and phone state. |
申请公布号 |
US8706053(B2) |
申请公布日期 |
2014.04.22 |
申请号 |
US20090621549 |
申请日期 |
2009.11.19 |
申请人 |
CAMP, JR. WILLIAM O.;STORY DAVID R.;FUTTER PAUL;HAYES GERARD J.;SONY CORPORATION;SONY MOBILE COMMUNICATIONS AB |
发明人 |
CAMP, JR. WILLIAM O.;STORY DAVID R.;FUTTER PAUL;HAYES GERARD J. |
分类号 |
H04B1/40;H04B1/04 |
主分类号 |
H04B1/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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