| 내 용 |
요즘 스마트폰 시장을 뜨겁게 달구고 있는 애플의 아이폰4S와 삼성전자의 갤럭시S2 LTE는 새로운 안테나 기술로도 주목을 받고 있다.
20일 통신업계에 따르면 아이폰4S와 갤럭시S2 LTE는 모두 주요 안테나가 2개라는 공통점이 있다.
그러나 아이폰4S의 듀얼 안테나가 3세대(3G) 통화품질 개선에 초점을 맞춘 반면, 갤럭시S2 LTE는 속도가 빠르고 용량이 많은 4세대(4G) 신호를 잡기 위해 2개의 안테나를 적용했다는 점이 다르다.
애플은 지난 4일(미국시간) 아이폰4S를 공개하면서 "아이폰4S는 휴대전화 가운데 최초로 송·수신을 모두 할 수 있고 서로 전환이 가능한 2개의 안테나를 장착했다"며 "이는 통화 품질을 높이고 데이터 최대 속도를 2배 빠르게 한다"고 설명했다.
PC월드 등 외국 IT 매체들은 이 듀얼 안테나 기술이 아이폰4의 '데스 그립(Death Grip·아이폰 아래 부분을 잡으면 통화가 끊기는 현상)' 문제를 해결하는 역할을 한다고 보도했다.
아이폰4도 주요 안테나가 2개였지만, 이들 안테나는 3G 신호 송신과 수신을 각기 따로 처리했다. 따라서 수신 담당 안테나가 있는 아래 부분을 잡으면 통화 감도가 떨어지는 현상이 나타났다.
하지만 아이폰4S는 2개의 안테나가 서로 신호 송·수신을 전환할 수 있어서 어느 한쪽이 신호를 못잡으면 다른 한쪽이 신호를 처리하도록 해 통화 실패율을 현저히 낮춘다.
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