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Antenna efficiency enhancement by active detuning of diversity antenna

An antenna and antenna tuning technology, which is applied in the direction of antenna, antenna coupling, antenna components, etc., can solve the problems of antenna system performance degradation and other issues

Active Publication Date: 2016-02-17
QORVO US INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, simply by holding the phone, the performance of the antenna system is degraded

Method used

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  • Antenna efficiency enhancement by active detuning of diversity antenna
  • Antenna efficiency enhancement by active detuning of diversity antenna
  • Antenna efficiency enhancement by active detuning of diversity antenna

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Embodiment Construction

[0021] The present invention generally relates to cellular telephones having multiple antennas. The present invention relates to how two antennas in a diversity or MIMO antenna system interact through mutual coupling. Mutual coupling arises due to the proximity of the two antennas, their antenna patterns, and their efficiencies. System performance can be optimized by adjusting the mutual coupling between the antennas. The primary and secondary antennas can be "tuned" and "detuned" respectively to enhance system performance. In the present invention, the primary and secondary antennas are independently tuned using MEMS capacitors arranged in the antenna aperture for frequency tuning.

[0022] Suitable for integration in portable RF equipment such as figure 1 The small antenna in the mobile phone shown in ) is usually mounted on the top or rear side of the mobile device, and the device acts as the active counter-pole of the antenna. Such small antennas are usually designed ...

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Abstract

The present invention generally relates to cellular phones having multiple antennas. The invention relates to how two antennas in a diversity or MIMO antenna system interact through mutual coupling. The mutual coupling is due to proximity of the two antennas, their antenna pattern and efficiency. The performance of the system can be optimized by adjusting the mutual coupling between the antennas. The primary and secondary antennas can be "tuned" and "de-tuned" respectively to enhance system performance. In this invention, the primary and secondary antennas are tuned independently using MEMS capacitor configured in the antenna aperture for frequency tuning.

Description

[0001] background of the invention technical field [0002] Embodiments of the invention generally relate to devices, such as cell phones, having a feedback system that compensates for changes in capacitance that occur when the cell phone is held in the hand or near a user's head. Background technique [0003] Cellular telephones, such as mobile telephones, have many desirable features that make everyday life easier. For example, a mobile phone is capable of receiving e-mail, text messages, and other data for the end user. Additionally, the mobile phone is capable of sending email, text messages and other data from the mobile phone. Mobile phones typically operate on wireless networks provided by any one of various cell phone carriers. The data sent to and from the mobile phone requires the mobile phone to operate at an increasing number of frequencies to support all the components and antennas of the mobile phone. [0004] 3G and 4G cellular telephone systems require th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/24H01Q1/52H01Q21/28
CPCH01Q1/243H01Q1/52H01Q21/28H01Q3/34H01Q21/29
Inventor 徐志豪小保罗·安东尼·托纳塔罗伯托·加迪
Owner QORVO US INC
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