Title:
ANTENNA DEVICE WITH IMPROVED DIRECTIVITY
Document Type and Number:
WIPO Patent Application WO/2010/093201
Kind Code:
A3
Abstract:
Disclosed is an antenna device with improved directivity. The antenna device comprises a hybrid circuit having first and second outputs with a phase difference of 90 degrees, a first antenna element fed by the first output of the hybrid circuit, and a second antenna element fed by the second output of the hybrid circuit. The hybrid circuit achieves the 90-degree phase difference between the first and second outputs by comprising a meta-material structure. With the antenna device, two or more antennas can be powered inside a compact device, and the directivity of the antenna device can be controlled.
Inventors:
RYOU BYUNG HOON (KR)
SUNG WON MO (KR)
KIM GI HO (KR)
SUNG WON MO (KR)
KIM GI HO (KR)
Application Number:
PCT/KR2010/000912
Publication Date:
November 18, 2010
Filing Date:
February 12, 2010
Export Citation:
Assignee:
EMW CO LTD (KR)
RYOU BYUNG HOON (KR)
SUNG WON MO (KR)
KIM GI HO (KR)
RYOU BYUNG HOON (KR)
SUNG WON MO (KR)
KIM GI HO (KR)
International Classes:
H01Q3/24; H01Q3/30; H01Q5/10
Foreign References:
| US20080258993A1 | 2008-10-23 | |||
| US20080258981A1 | 2008-10-23 | |||
| US20050253667A1 | 2005-11-17 |
Other References:
WANG, LING ET AL.: "A Novel Branch-Line Coupler Based on the Composite Right/Left Handed TL Structure", 2008 INTERNATIONAL WORKSHOP ON METAMATERIALS, 9 November 2008 (2008-11-09) - 12 November 2008 (2008-11-12), NANJING, CHINA, pages 397 - 399
NGUYEN, HOANG V. ET AL.: "Metamaterial-Based Dual-Band Six-Port Front-End for Direct Digital QPSK Transceiver", 2006 IEEE MEDITERRANEAN ELECTROTECHNICAL CONFERENCE, 16 May 2006 (2006-05-16) - 19 May 2006 (2006-05-19), MALAGA, SPAIN, pages 363 - 366
CALOZ, CHRISTOPHE: "Dual Composite Right/Left-Handed (D-CRLH) Transmission Line Metamaterial", IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, vol. 16, no. 11, November 2006 (2006-11-01), pages 585 - 587
LI, BO ET AL.: "A Planar Microstrip Implementation of Dual-Composite Right/Left handed Transmission Line", 2008 INTERNATIONAL CONFERENCE ON MICROWAVE AND MILLIMETER WAVE TECHNOLOGY, 21 April 2008 (2008-04-21) - 24 April 2008 (2008-04-24), NANJING, CHINA, pages 1617 - 1619
RENNINGS, A. ET AL.: "Double-Lorentz Transmission Line Metamaterial and its Application to Tri-Band Devices", 2007 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM, 3 June 2007 (2007-06-03) - 8 June 2007 (2007-06-08), HONOLULU, HI USA, pages 1427 - 1430
NGUYEN, HOANG V. ET AL.: "Metamaterial-Based Dual-Band Six-Port Front-End for Direct Digital QPSK Transceiver", 2006 IEEE MEDITERRANEAN ELECTROTECHNICAL CONFERENCE, 16 May 2006 (2006-05-16) - 19 May 2006 (2006-05-19), MALAGA, SPAIN, pages 363 - 366
CALOZ, CHRISTOPHE: "Dual Composite Right/Left-Handed (D-CRLH) Transmission Line Metamaterial", IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, vol. 16, no. 11, November 2006 (2006-11-01), pages 585 - 587
LI, BO ET AL.: "A Planar Microstrip Implementation of Dual-Composite Right/Left handed Transmission Line", 2008 INTERNATIONAL CONFERENCE ON MICROWAVE AND MILLIMETER WAVE TECHNOLOGY, 21 April 2008 (2008-04-21) - 24 April 2008 (2008-04-24), NANJING, CHINA, pages 1617 - 1619
RENNINGS, A. ET AL.: "Double-Lorentz Transmission Line Metamaterial and its Application to Tri-Band Devices", 2007 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM, 3 June 2007 (2007-06-03) - 8 June 2007 (2007-06-08), HONOLULU, HI USA, pages 1427 - 1430
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