US 7,564,413 B2
Multi-band antenna and mobile communication terminal having the same
Hyun Hak Kim, Gyunggi-Do (Korea, Republic of); Jong Kweon Park, Daejeon (Korea, Republic of); Jung Nam Lee, Daejeon (Korea, Republic of); and Jae Chan Lee, Gyunggi-Do (Korea, Republic of)
Assigned to Samsung Electro-Mechanics Co., Ltd., Suwon, Kyungki-Do (Korea, Republic of)
Filed on Feb. 05, 2008, as Appl. No. 12/26,373.
Claims priority of application No. 10-2007-0020302 (KR), filed on Feb. 28, 2007.
Prior Publication US 2008/0204340 A1, Aug. 28, 2008
Int. Cl. H01Q 1/24 (2006.01)
U.S. Cl. 343—702  [343/700 MS] 11 Claims
OG exemplary drawing
 
1. A mobile communication terminal comprising:
a dielectric substrate;
a ground surface formed on a first area of the dielectric substrate;
a radiation part disposed on a second area of the dielectric substrate where the ground surface is not formed, at a predetermined distance from the dielectric substrate, the radiation part having first and second slots formed thereon;
a feeding line formed on the second area of the dielectric substrate and having one end connected to the radiation part;
a ground line disposed on the second area of the dielectric substrate at a predetermined distance from the feeding line and having one end connected to the radiation part and another end connected to the ground surface; and
a matching ground surface formed on the second area of the dielectric substrate, the matching ground surface disposed in a superimposed relationship with a portion of the radiation part and extending from the ground surface to be capacitively coupled to the radiation part.