Patent ID: 6697023
Filing Date: 2004-02-24
Classification: H01Q

Abstract:
A built-in multi-band mobile phone antenna comprising:a meandering conductive body having a first meandering conductive portion, a second meandering conductive portion, and a signal feeding point disposed between said first and second meandering conductive portions; a conductive flat first radiating plate spaced apart from said conductive body, said first radiating plate being in electrical connection with said first meandering conductive portion of said conductive body and tuned to a low frequency range; an elongated conductive flat second radiating plate spaced apart from said conductive body, said second radiating plate being in electrical connection with said second meandering conductive portion of said conductive body at one end and being adapted to be connected electrically to a grounding point at the other end, said second radiating plate being tuned to a high frequency range that is different from said low frequency range; and a conductive flat parasitic plate adapted to be in electrical connection with the grounding point so as to widen bandwidth of said antenna, all of said conductive body, said first and second radiating plates, and said parasitic plate defining cooperatively a plate-shaped accommodating space thereamong.