Electronic device and tunable antenna system

An antenna system and electronic equipment technology, applied in the direction of electrical short antennas, antennas, loop antennas with variable reactance, etc., can solve the problems such as the inability of the antenna to cover the communication band, the narrow working bandwidth, the difficulty and so on.

Active Publication Date: 2012-03-28
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to make conventional antenna structures suitable for small devices
For example, an antenna confined in a small volume will typically exhibit a narrower operating bandwidth compared to an antenna implemented in a larger volume
If the bandwidth of the antenna becomes too small, then the antenna will not be able to cover all communication bands of interest

Method used

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  • Electronic device and tunable antenna system
  • Electronic device and tunable antenna system
  • Electronic device and tunable antenna system

Examples

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Embodiment Construction

[0033] such as figure 1 An electronic device such as device 10 may be equipped with wireless communication circuitry. Wireless communications circuitry may be used to support wireless communications, such as long-range wireless communications (e.g., communications in the cellular telephone band) and short-range communications (i.e., such as link, link, etc.). Wireless communication circuitry may include one or more antennas. These antennas and associated wireless communication circuitry within the electronic device are adjustable. By tuning the adjustable antenna system, the antenna response within the band can be adjusted (ie, the antenna system can be fine tuned). Fine tuning can be used to ensure proper reception of signals in desired communication bands. Furthermore, by tuning the adjustable antenna system, additional frequencies of interest can be covered using antenna response curves that would otherwise only cover a single band or group of bands (that is, by coar...

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PUM

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Abstract

An electronic device (10) has wireless communications circuitry (34) including an adjustable antenna system (40) coupled to a radio-frequency transceiver (90). The adjustable antenna system (40) may include one or more adjustable electrical components (168) that are controlled by storage and processing circuitry (28) in the electronic device (10). The adjustable electrical components (168) may include switches and components that can be adjusted between numerous different states. The adjustable electrical components (168) may be coupled between antenna system components such as transmission line elements (140), matching network elements (152), antenna elements (160) and antenna feeds. By adjusting the adjustable electrical components, the storage and processing circuitry (28) can tune the adjustable antenna system (40) to ensure that the adjustable antenna system (40) covers communications bands of interest.

Description

technical field [0001] The present disclosure relates generally to wireless communication circuits, and more particularly to electronic devices with tunable antenna systems. Background technique [0002] Electronic devices, such as computers and handheld electronic devices, are often equipped with wireless communication capabilities. For example, an electronic device may communicate using a cellular telephone band using long-range wireless communication circuitry, such as cellular telephone circuitry. Electronic devices may also use short-range wireless communication links to handle communications with nearby devices. For example, electronic equipment can use 2.4GHz and 5GHz (IEEE 802.11) band and 2.4GHz band for communication. [0003] To meet consumer demands for small wireless devices, manufacturers are constantly seeking to implement wireless communication circuits using compact structures, such as antenna components. However, it is difficult to make conventional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q5/00H01Q1/36H01Q1/22H01Q5/10
CPCH01Q7/005H01Q13/103H01Q1/243H01Q9/145H01Q9/0421H01Q1/48H01Q9/0442H01Q1/2258H01Q1/44H01Q5/00H01Q1/24H04B1/40
Inventor M·A·莫R·W·斯科卢巴M·帕斯科林尼R·J·希尔R·卡巴勒罗
Owner APPLE INC
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