Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method and apparatus for reducing SAR exposure in a communications handset device

A communication device and absorptivity technology, which can be applied in the directions of antenna support/installation device, antenna grounding device, radiating element structure, etc., and can solve problems such as adverse health effects of handsets and heating of brain cells.

Inactive Publication Date: 2005-02-09
SK TELECOM CO LTD +1
View PDF1 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, this RF energy may cause brain cells to heat up and prolonged, frequent use of the handset may cause adverse health effects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for reducing SAR exposure in a communications handset device
  • Method and apparatus for reducing SAR exposure in a communications handset device
  • Method and apparatus for reducing SAR exposure in a communications handset device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Before describing in detail the particular antenna arrangement of the present invention, it should be observed that the present invention consists essentially in illustrating a novel and non-obvious combination of elements. Thus, elements of the invention have been represented by conventional elements in the drawings, and only those details relevant to the invention are shown here, lest the disclosure of the invention is not overwhelmed by details of construction which are obvious to those skilled in the art. Clear and obvious.

[0028] Figure 4 A conventional handset 80 for receiving and / or transmitting radio frequency energy, such as a cellular telephone, is shown in an operative position next to an ear 82 of a user 84 . exist Figure 5 As further shown in , the handset 80 includes a handset housing 86 enclosing an embedded antenna 88 that is physically and electrically connected to a printed circuit board 90 with a ground plane 91 . Typically, ground plane 91 compr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An antenna structure for use in a communications device for reducing a user's SAR exposure. In addition to the conventional antenna elements, e.g., a radiating element and a ground plane, the antenna structure of the present invention comprises a conductive element for directing radio frequency energy emitted by the radiating element away from the user, thereby reducing the user's SAR exposure. The conductive element can be disposed on an interior or an exterior surface of a case enclosing the communications device.

Description

technical field [0001] The present invention relates to antennas, and more particularly to techniques for reducing the exposure SAR (absorption rate) experienced by a user when the user is operating a handheld communication device that employs the antenna to emit radio frequency energy. Background technique [0002] Usually antenna performance depends on the size, shape and material composition of the elements that make up the antenna, as well as the relationship between certain antenna physical parameters (such as the length of a linear antenna and the diameter of a loop antenna) and the wavelength of the signal received or transmitted by the antenna . These relationships determine several antenna operating parameters including: input impedance, gain, directivity coefficient, signal polarization, operating frequency, bandwidth, and radiation pattern. Usually for an operable antenna, the smallest physical antenna size (or the smallest electrically effective size) must be ab...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/00H01Q1/24H01Q1/36H01Q1/38H01Q1/48H01Q1/52H01Q9/04H01Q19/22H01Q19/28H04B1/38H04M1/02
CPCH01Q19/28H01Q9/0421H01Q1/245H01Q1/243H01Q19/22H01Q1/36H01Q1/24
Inventor 曹永敏吴世铉李朱文尹真熙崔相玉沈基学韩银石
Owner SK TELECOM CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com