Patent ID: 8872706

Claim:
An electronic device having a length, a width perpendicular to the length, and a height perpendicular to the width and the length, wherein the width is less than the length and the height is less than the width, comprising: a housing having conductive structures that form an antenna ground and having a peripheral conductive member that runs around at least some edges of the housing, wherein the peripheral conductive member extends in a direction perpendicular to the antenna ground; an inverted-F antenna that is formed from the antenna ground and a segment of the peripheral conductive member; an antenna feed line that carries antenna signals to the segment; receiver circuitry; an adjustable impedance matching circuit interposed in the antenna feed line; and an additional antenna that is formed from the antenna ground and an additional segment of the peripheral conductive member, wherein the additional antenna is configured to transmit and receive radio-frequency signals in a plurality of cellular telephone bands, the receiver circuitry is configured to only receive radio-frequency signals in a subset of the plurality of cellular telephone bands over the inverted-F antenna, the antenna ground comprises a midplate member that extends across the width of the electronic device, the midplate member is separated from the segment of the peripheral conductive member by a first dielectric opening so that the segment and the midplate member define the first dielectric opening, and the midplate member is separated from the additional segment of the peripheral conductive member by a second dielectric opening so that the additional segment and the midplate member define the second dielectric opening.