Terminal device having meta-structure

• US 9,231,443 B2
• Filed: 08/07/2013
• Issued: 01/05/2016
• Est. Priority Date: 08/09/2012
• Status: Active Grant

• Current Assignee: soongsil university-industry cooperation foundation
• Original Assignee: soongsil university-industry cooperation foundation
• Inventors: Seo, Chul Hun, Lee, Chongmin
• Primary Examiner(s): Rossoshek, Helen
• Application Number:
  US13/961,080
• Publication Number:
  US 20140042971A1
• Time in Patent Office: 881 Days
• Field of Search: 320/114
• US Class Current: 1/1
• CPC Class Codes: H01P 3/08 Microstrips; Strip lines
• CPC Class Codes: H01P 3/085 Triplate lines
• CPC Class Codes: H02J 50/001 Energy harvesting or scavenging
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H04B 1/3838 Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use

Abstract

A terminal device includes a housing, a communication antenna installed in a first region in the housing and configured to transmit and receive electromagnetic waves, an agglomerative meta-structure installed in a second region spaced from the first region in the housing and configured to agglomerate the electromagnetic waves received from the communication antenna, and a recycling unit configured to convert the electromagnetic waves agglomerated by the agglomerative meta-structure to effective power.

Claims

1. A terminal device comprising:

a housing;

a communication antenna installed in a first region in the housing and configured to transmit and receive electromagnetic waves;

an agglomerative meta-structure installed in a second region spaced from the first region in the housing and configured to agglomerate the electromagnetic waves received from the communication antenna; and

a recycling unit configured to convert the electromagnetic waves agglomerated by the agglomerative meta-structure to effective power,

wherein a front pattern of the agglomerative meta-structure includes an edge pattern formed along the inside of an outer surface of the agglomerative meta-structure and one or more extended patterns extending from a given point of respective sides of the edge pattern toward the inside of the agglomerative meta-structure.

2. The terminal device of claim 1, wherein the recycle unit comprises:

a receiving circuit unit configured to rectify and match the electromagnetic waves agglomerated by the agglomerative meta-structure; and

a load configured to be supplied with an effective power that is rectified and matched by the receiving circuit unit.

3. The terminal device of claim 1, wherein the agglomerative meta-structure MM1 has a dielectric constant exhibiting a negative property or a permeability exhibiting a negative property and absorbs the electromagnetic waves received from the communication antenna.

4. The terminal device of claim 1, wherein the recycling unit comprises:

an absorber configured to absorb the electromagnetic waves received from the communication antenna;

a receiving circuit unit configured to rectify and match the electromagnetic waves absorbed through the absorber; and

a load configured to charge power that is rectified and matched by the receiving circuit unit.

5. The terminal device of claim 4, wherein the agglomerative meta-structure MM1 is configured to have a dielectric constant and permeability exhibiting a negative property and transmit the electromagnetic waves received from the communication antenna.

6. The terminal device of claim 1, further comprising a wireless power transceiving unit.

7. The terminal device of claim 6, wherein the wireless power transceiving unit comprises:

a collective meta-structure configured to collect wireless power received from an outside; and

a charging antenna arranged between the collective meta-structure and the agglomerative meta-structure and configured to deliver the wireless power to a load for charging it.