Patent ID: 8115682

Claim:
A multi-band HAC compatible antenna module, comprising: a dielectric substrate, said dielectric substrate comprising a first substrate part, a second substrate part, and a metal ground covered on at least a part of the surface of said first substrate part; an antenna holder protruded from a first side of said second substrate part of said dielectric substrate, said antenna holder being electrically insulative; a single-pole antenna mounted in said antenna holder and adapted to produce a radiation in GSM850, GMS900, DCS and PCS bands; a microband feed line connected to said single-pole antenna for feeding in signals; and a metal shield mounted in a second side of said second substrate part of said dielectric substrate opposite to said antenna holder for resonant coupling with said single-pole antenna to lower electromagnetic interference and to improve hearing aids compatibility characteristic, wherein the distance between said single-pole antenna and said metal shield is 1 mm and equal to the thickness of said dielectric substrate, wherein said antenna holder is filled with a dielectric material, said dielectric material having parameters adjustable to have said single-pole antenna work in the desired frequency, wherein when adjusting the radiation length of said single-pole antenna and the parameters of said dielectric material in said antenna holder to have said single-pole antenna produce a resonant frequency above the desired working band and then adjusting the coupling between said metal shield and said single-pole antenna to shift the resonance toward the desired working frequency, the HAC characteristic of the antenna module is improved.