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An apparatus for compensation of the impedance and the load phase of the antenna element

An antenna unit and equipment technology, applied to antennas, devices that make the antennas work in different frequency bands at the same time, impedance networks, etc., can solve problems such as shortening battery life of mobile cellular phones

Inactive Publication Date: 2010-02-03
NOKIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this may result in reduced battery life for mobile cellular phones

Method used

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  • An apparatus for compensation of the impedance and the load phase of the antenna element
  • An apparatus for compensation of the impedance and the load phase of the antenna element
  • An apparatus for compensation of the impedance and the load phase of the antenna element

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Embodiment Construction

[0038] The drawing shows a device 10 comprising: an antenna element 24 having an impedance and a load phase; a phase shifter 30 coupled to the antenna element 24; and a device for controlling the phase shifter 30 to compensate the antenna element in response to changes in the environment of the device 10 The impedance of 24 and the load phase are changed accordingly by the controller 12 .

[0039] figure 1 The figure shows a schematic diagram of an embodiment of a device 10 according to the invention. In more detail, device 10 includes controller 12, memory 14, display 16, audio output device 18, audio input device 20, radio transceiver 22, antenna unit 24, user input device 26, power supply 28, phase shifter 30, and a or multiple sensors 32 .

[0040] Device 10 may be any electronic device, and may be, for example, a portable device such as a mobile cellular telephone, a personal digital assistant (PDA) or a laptop computer. Reference below figure 1 In the embodiment desc...

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PUM

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Abstract

An apparatus comprising: an antenna element having an impedance and a load phase; a phase shifter coupled to the antenna element; and a controller for controlling, in response to a change in a contextof the apparatus, the phase shifter to compensate for a consequent change in the impedance and the load phase of the antenna element.

Description

technical field [0001] Embodiments of the invention relate to an apparatus. More specifically, they relate to wireless communication devices. Background technique [0002] Devices such as mobile cellular telephones generally have at least one antenna unit through which they can communicate with other devices. If the environment of the device changes, the load phase and impedance of the antenna elements at the desired frequency band may change. For example, if a user holds the device, the antenna elements may electromagnetically couple with the user and as a result the load phase and impedance of the antenna elements at the desired frequency band may change. [0003] One problem associated with such a device is that it may no longer be able to effectively communicate within the desired frequency band. [0004] Mobile cellular telephone operators typically require mobile cellular telephones within their networks to meet certain Total Transmit Power (TRP) and Total Receive S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/04H03H7/40
CPCH04B1/0458H01Q9/0421H01Q9/145H04B1/18H01Q5/0051H01Q5/357
Inventor S·鲁叙M·莱诺南
Owner NOKIA CORP
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