Electronic device with shared antenna structures and balun

A technology of electronic equipment and antenna structure, which is applied in the directions of devices, antennas, resonant antennas, etc. that make antennas work in different frequency bands at the same time

Active Publication Date: 2016-09-14
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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NFC transceiver enables wirel...

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  • Electronic device with shared antenna structures and balun
  • Electronic device with shared antenna structures and balun
  • Electronic device with shared antenna structures and balun

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Embodiment Construction

[0019] Electronic devices may have wireless circuitry. The wireless circuitry may include near field communication circuitry. For example, a near field communication transmitter-receiver ("transceiver") may use a near field communication antenna to transmit and receive near field electromagnetic signals at frequencies such as 13.56 MHz. Near field communication schemes involve near field electromagnetic coupling between near field antennas separated by a relatively short distance (eg 20 cm or less). The near field communication antenna may be a loop antenna. The wireless circuitry may also include cellular network transceiver circuitry, wireless local area network transceiver circuitry, satellite navigation system circuitry, or other non-near field communication circuitry. The non-near field communication circuit may use an antenna to handle radio frequency signals at frequencies of 700MHz to 2700MHz, 5GHz, or other suitable frequencies.

[0020] To save space within the el...

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Abstract

An electronic device may be provided with shared antenna structures that can be used to form both a near-field-communications antenna such as a loop antenna and a non-near-field communications antenna such as an inverted-F antenna. The antenna structures may include conductive structures such as metal traces on printed circuits or other dielectric substrates, internal metal housing structures, or other conductive electronic device housing structures. A main resonating element arm may be separated from an antenna ground by an opening. A non-near-field communications antenna return path and antenna feed path may span the opening. A balun may have first and second electromagnetically coupled inductors. The second inductor may have terminals coupled across differential signal terminals in a near-field communications transceiver. The first inductor may form part of the near-field communications loop antenna.

Description

[0001] This patent application claims priority to US Patent Application 14 / 195,130, filed March 3, 2014, which is hereby incorporated by reference in its entirety. Background technique [0002] The present invention relates generally to electronic devices, and more particularly to antennas for electronic devices having wireless communication circuitry. [0003] Electronic devices such as portable computers and cellular telephones often have wireless communication capabilities. For example, an electronic device may communicate using long-range wireless communication circuitry, such as cellular telephone circuitry, using cellular telephone frequency bands. Electronic devices may use short-range wireless communication circuitry, such as wireless local area network communication circuitry, to handle communications with nearby devices. Electronic devices may also have satellite navigation system receivers and other wireless circuitry such as near field communication circuitry. Ne...

Claims

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Application Information

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IPC IPC(8): H01Q1/24H01Q9/42H01Q5/35H01Q5/371
CPCH01Q9/42H01Q5/35H01Q5/371H04B5/0081H01Q1/243H01Q21/30H01Q1/48H01Q3/247H01Q7/00
Inventor 欧阳月辉D·F·达内尔E·阿雅拉瓦兹奎兹E·J·同胡鸿飞M·A·莫M·帕斯科里尼蔡明儒金男波R.W.施卢巴
Owner APPLE INC
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