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Tunable antennas for handheld devices

A handheld, antenna technology, used in resonant antennas, antennas, antenna components and other directions, can solve problems such as non-optimal efficiency of antennas

Active Publication Date: 2009-08-19
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, capacitively tuned antennas tend to exhibit sub-optimal efficiency

Method used

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  • Tunable antennas for handheld devices
  • Tunable antennas for handheld devices
  • Tunable antennas for handheld devices

Examples

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Embodiment Construction

[0050] The present invention may relate to tunable antennas for portable electronic devices, such as handheld electronic devices. The invention may also relate to portable devices comprising tunable antennas and methods for testing and using such devices and antennas.

[0051] A tunable antenna according to the invention may comprise a radiating element having a ground and a plurality of antenna feeds. The radiating element may be formed using any suitable antenna structure, such as a patch antenna structure, a planar inverted-F antenna structure, a helical antenna structure, and the like.

[0052] Portable electronic devices may be small portable computers, such as those sometimes referred to as ultraportables. In one particularly suitable configuration, the portable electronic device is a handheld electronic device. As an example, the use of handheld devices will primarily be described here.

[0053] Handheld devices can be, for example, cell phones, media players with wi...

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PUM

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Abstract

A compact tunable antenna for a handheld electronic device and methods for calibrating and using compact tunable antennas are provided. The antenna can have multiple ports. Each port can have an associated feed and ground. The antenna design can be implemented with a small footprint while covering a large bandwidth. The antenna can have a radiating element formed from a conductive structure such as a patch or helix. The antenna can be shaped to accommodate buttons and other components in the handheld device. The antenna may be connected to a printed circuit board in the handheld device using springs, pogo pins, and other suitable connecting structures. Radio-frequency switches and passive components such as duplexers and diplexers may be used to couple radio-frequency transceiver circuitry to the different feeds of the antenna. Antenna efficiency can be enhanced by avoiding the use of capacitive loading for antenna tuning.

Description

[0001] This application claims priority to US Patent Application Serial No. 11 / 516,433, filed September 5,2006. technical field [0002] The present invention relates to antennas, and more particularly to compact tunable antennas for use in wireless handheld electronic devices. Background technique [0003] Wireless handheld devices such as cell phones contain antennas. Handheld devices have been shrinking in size with advances in integrated circuit technology. Therefore a small antenna is required. [0004] Typical antennas for handheld devices are formed from metallic radiating elements. The radiating element may be fabricated by patterning a metal layer on a circuit board substrate, or may be formed from a thin metal sheet using a foil stamping process. These techniques can be used to produce antennas that fit within the tight constraints of compact handheld devices. [0005] Today's handheld electronic devices often need to work in several different communication fre...

Claims

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Application Information

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IPC IPC(8): H01Q1/24H01Q9/04H01Q5/00H01Q5/10H01Q5/371
CPCH01Q9/0442H01Q9/0421H01Q1/243H01Q5/0058H01Q5/371
Inventor 张志军R·卡巴勒罗
Owner APPLE INC
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