Patent ID: 7342545

Claim:
An antenna configuration in an extended position for a flip type mobile phone that includes a speaker component near the top end of the upper flip portion of the mobile phone, the antenna configuration designed to reduce, to a hearing aid compatibility (HAC) M 3 rating or better, scattered EM field effects that can cause interference to an active hearing aid when the flip type mobile phone is operated in relatively close proximity to the active hearing aid, the antenna configuration comprising: a halfwave type antenna capable of extending out from the lower portion of the flip type mobile phone such that when extended the antenna does not share the same vertical axis as the lower portion of the flip type mobile phone, but rather forms a tilt angle (α) that extends the antenna away from the upper portion of the flip type mobile phone creating a greater separation distance between the speaker and the antenna than had the antenna extended along the same vertical axis as the lower portion of the flip type mobile phone; an antenna feed contact for coupling the antenna to RF components within the flip type mobile phone; and an antenna matching network coupled between the antenna feed contact and the antenna, the antenna matching network attenuating an output power of the antenna when the tilt angle (α) cannot be made large enough to reduce scattered EM field effects to a hearing aid compatibility (HAC) M 3 rating or better.