Invention Grant
- Patent Title: Tunable multiband antenna with passive and active circuitry
- Patent Title (中): 可调谐多频带天线,具有无源和有源电路
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Application No.: US13864968Application Date: 2013-04-17
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Publication No.: US09496608B2Publication Date: 2016-11-15
- Inventor: Yi Jiang , Siwen Yong , Gordon Coutts , Lijun Zhang , Qingxiang Li , Robert W. Schlub
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Treyz Law Group, P.C.
- Agent G. Victor Treyz; Michael H. Lyons
- Main IPC: H01Q9/00
- IPC: H01Q9/00 ; H01Q3/22 ; H01Q1/24 ; H01Q1/44

Abstract:
An electronic device may have an antenna for providing coverage in wireless communications bands of interest such as a low frequency communications band and a high frequency communications band. The antenna may have an antenna ground and an antenna resonating element. The antenna resonating element may have a high band arm that contributes to a first high band resonance in the high band and may have a low band arm that exhibits a low band resonance in the low band. A passive filter that is coupled between first and second portions of the antenna resonating element may be configured to exhibit a short circuit impedance associated with a bypass path that allows the antenna resonating element to contribute to a second high band resonance in the high band.
Public/Granted literature
- US20140313087A1 Tunable Multiband Antenna With Passive and Active Circuitry Public/Granted day:2014-10-23
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