| 摘要 |
#CMT# #/CMT# The antenna, especially for a terrestrial digital television receiver, consists of a first dipole element (1) with a first conductor arm (10) linked by a connector (12) to a second conductor arm (11) in the form of a box mounted on a flat panel (3) of metal or metallised material. The two arms have differential feeds and can be rotated relative to one another, while the box-shaped arm is designed to receive an electronic card (4). A second element (2) of the antenna is in the form of two rectangular U-shaped slits (20, 21) in the plate with their bases towards one another. #CMT#USE : #/CMT# Receiving signals in Digital Video Broadcast Handheld format, e.g. for portable apparatus such as a Personal Digital Assistant, or for communications using a Global System for Communications cellular network. #CMT#ADVANTAGE : #/CMT# The antenna is compact in design, and can easily be stowed in a pocket. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a perspective view of the antenna. 1 : First dipole element 2 : Second element 3 : Flat panel 4 : Electronic card 10 : First conductor arm 11 : Second conductor arm 12 : Connector 20, 21 : U-shaped slits. |
