Antenna Can Be Enclosed In All-Metal Mobile Phone Case

A new capacitive-feed antenna is said to be the first such antenna that can be enclosed in an all-metal mobile handset case. The antenna works with mobile phones operating at 900, 1800, 1900, and 2100 MHz and can employ several manufacturing techniques, including flexible printed wiring board, laser direct structuring, and molded interconnect device. The antenna’s radiator is placed at the outside surface of the phone chassis and fed by a capacitively coupled feed circuit. All available antenna function is used with no loss of signal performance. The capacitive-feed antenna offers flexibility in phone design and manufacturing. It can be used either as a stand-alone solution or integrated, for example, with the all-metal cover. Without having to coat the antenna with plastic, the metal shell and the antenna can be constructed as a single unit. The metallic appearance can be applied to the antenna area or the metal cover. The metal cover can also be decorated with paint, leather, or other materials without affecting antenna performance. The capacitive-feed antenna is also available as an antenna/speaker module. Because the antennas are customized for each manufacturer, the price, lead time, and delivery depend on each customer’s requirements. PULSE, San Diego, CA. (619) 398-9700.