PORTABLE TERMINAL ANTENNA FOR IMPROVING SAR AND HAC CHARACTERISTICS

• US 20120044120A1
• Filed: 04/28/2010
• Published: 02/23/2012
• Est. Priority Date: 04/28/2009
• Status: Abandoned Application

• Current Assignee: Ace Technology Corporation
• Original Assignee: Ace Technology Corporation
• Inventors: Choi, Su-Hyun, Kim, Jun-Hee, Jin, Won-Hwi, Kim, Byong-Nam
• Application Number:
  US13/266,635
• Publication Number:
  US 20120044120A1
• Time in Patent Office: Days
• US Class Current: 343/843
• CPC Class Codes: H01Q 1/241 used in mobile communications, e.g. GSM H01Q1/247, H01Q1/248 take precedence
• CPC Class Codes: H01Q 1/245 with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
• CPC Class Codes: H01Q 13/08 Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
• CPC Class Codes: H01Q 9/045 with particular feeding means for circular polarisation H01Q9/0428

Abstract

An antenna for a mobile terminal for improving SAR and HAC characteristics is disclosed. The disclosed antenna may include: a first conductive line electrically connected to a feeding point; a second conductive line separated from the first conductive line at a designated distance and electrically connected to a ground; a third conductive line extending from the second conductive line; and a coupling branch separated from the third conductive line and electrically connected to a ground, where coupling matching and coupling feeding occur between the first conductive line and the second conductive line, and the second conductive line and the third conductive line operate as a radiator. The disclosed antenna can enable impedance matching for a broader band and can improve SAR and HAC characteristics.

Claims

1. An antenna for a mobile terminal for improving SAR and HAC characteristics, the antenna comprising:

a first conductive line electrically connected to a feeding point;

a second conductive line separated from the first conductive line at a designated distance and electrically connected to a ground;

a third conductive line extending from the second conductive line; and

a coupling branch separated from the third conductive line and electrically connected to a ground,

wherein coupling matching and coupling feeding occur between the first conductive line and the second conductive line, and the second conductive line and the third conductive line operate as a radiator.

2. The antenna for a mobile terminal for improving SAR and HAC characteristics according to claim 1, wherein the coupling branch is arranged such that coupling occurs from a point at least 0.15λ

from a starting end of the radiator.

3. The antenna for a mobile terminal for improving SAR and HAC characteristics according to claim 1, wherein the coupling branch comprises a coupling part and a ground connection part, the coupling part having coupling with the third conductive line occurring in a designated section thereof, the ground connection part connected to the ground.

4. The antenna for a mobile terminal for improving SAR and HAC characteristics according to claim 3, wherein the coupling branch further comprises an open stub for impedance matching.

5. The antenna for a mobile terminal for improving SAR and HAC characteristics according to claim 3, wherein multiple open stubs protrude between the coupling branch and the third conductive line from the coupling branch and the third conductive line, in the section where coupling occurs between the coupling branch and the third conductive line.

6. The antenna for a mobile terminal for improving SAR and HAC characteristics according to claim 5, wherein the open stubs protrude from the coupling branch and the third conductive line in an interlocking manner.

7. The antenna for a mobile terminal for improving SAR and HAC characteristics according to claim 5, wherein multiple open stubs protrude between the first conductive line and the second conductive line from the first conductive line and the second conductive line.

8. An antenna for a mobile terminal for improving SAR and HAC characteristics, the antenna comprising:

a feeding part;

a radiator configured to receive RF signals fed from the feeding part; and

a coupling branch separated from the radiator at a designated distance and having coupling occurring in a section thereof separated from the radiator, the coupling branch electrically connected to a ground.

9. The antenna for a mobile terminal for improving SAR and HAC characteristics according to claim 8, wherein the coupling branch is arranged such that coupling occurs from a point at least 0.15λ

from a starting end of the radiator.

10. The antenna for a mobile terminal for improving SAR and HAC characteristics according to claim 9, wherein the coupling branch comprises a coupling part and a ground connection part, the coupling part having coupling with the radiator occurring in a designated section thereof, the ground connection part connected to the ground.

11. The antenna for a mobile terminal for improving SAR and HAC characteristics according to claim 9, wherein multiple open stubs protrude between the coupling branch and the radiator from the coupling branch and the radiator, in the section where coupling occurs between the coupling branch and the radiator.

12. The antenna for a mobile terminal for improving SAR and HAC characteristics according to claim 11, wherein the open stubs protrude from the coupling branch and the radiator in an interlocking manner.