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System and methods for performing antenna transmit diversity

A wireless transmission and antenna technology, applied in the field of electronic equipment, can solve the problem of low efficiency in the operation of wireless electronic equipment

Active Publication Date: 2013-06-19
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Operation of wireless electronic devices may be inefficient due to the coupled transmit and receive paths

Method used

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  • System and methods for performing antenna transmit diversity
  • System and methods for performing antenna transmit diversity
  • System and methods for performing antenna transmit diversity

Examples

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Embodiment Construction

[0016] The present invention relates generally to wireless communications and, more particularly, to wireless electronic devices having switching circuitry to accommodate antenna transmit diversity.

[0017] The wireless electronic device may be a portable electronic device such as a laptop computer or a small portable computer of this type sometimes called an ultraportable computer. Portable electronic devices may include tablet computing devices (eg, laptop computers including touch screen displays). Portable electronic devices may also be somewhat smaller devices. Examples of smaller portable electronic devices include wristwatch devices, pendant devices, headphone and earbud devices, and other wearable and miniaturized devices. Under suitable arrangements, the portable electronic device may be a handheld electronic device.

[0018] Wireless electronic devices can be, for example, cellular phones, media players with wireless communication capabilities, handheld computers ...

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Abstract

A wireless electronic device may include switching circuits that perform time division duplexing by toggling between a first configuration in which radio-frequency signals received from antennas are routed to the transceivers and a second configuration in which the antennas are coupled to antenna switching circuitry. The antenna switching circuitry may receive radio-frequency transmission signals from the transceivers and route the transmission signals to a selected one of the antennas. The antenna switching circuitry may be controlled by control circuitry such as baseband circuitry and / or storage and processing circuitry on the device. The antenna switching circuitry may be controlled to accommodate antenna transmit diversity without affecting reception of radio-frequency signals, because the switching circuits that perform time division duplexing may form signal reception paths that are unaffected by the configuration of the antenna switching circuitry.

Description

technical field [0001] The present invention relates generally to electronic devices and, more particularly, to wireless electronic devices having two or more antennas. Background technique [0002] Electronic devices, such as handheld electronic devices and other portable electronic devices, are becoming more and more popular. Examples of handheld electronic devices include cellular telephones, laptop computers, media players, and hybrid devices that include the functionality of multiple devices of this type. Popular portable electronic devices that are somewhat larger than traditional handheld electronic devices include laptop computers and tablet computers. [0003] Due in part to their mobile nature, portable electronic devices are often provided with wireless communication capabilities. For example, a portable electronic device may communicate with a wireless base station using long-range wireless communications and may use a (IEEE 802.11) frequency band link and us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
CPCH04B7/0602H04B7/0868H04B1/44
Inventor 于启山J·T·杨
Owner APPLE INC
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