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Pulse Engineering now offers what it’s calling the first capacitive-feed antenna that can be enclosed in an all-metal mobile handset case (see the figure). It can be used in mobile phones that operate at 900, 1800, 1900, and 2100 MHz as well as several antenna manufacturing technologies such as flexible printed wiring board, laser direct structuring (LDS), and molded interconnect device (MID).

A capacitively coupled feed circuit feeds the antenna radiator, which is placed on the outside surface of the phone chassis. All of the available antenna function is utilized with no loss of signal performance, according to Pulse. The antenna quality, reliability, and operation are based on proven technology found in all Pulse antenna systems.

Pulse Engineering’s latest capacitive-feed antenna can be used in all-metal mobile handset cases with no loss in performance.

The antenna can be used as a standalone solution or integrated, for example, with the all-metal cover. Without having to coat the antenna with plastic, the metal shell and antenna can be constructed as a single unit. The metallic appearance can be applied to the antenna area or the metal cover, which can be decorated with paint, leather, or other materials without affecting antenna performance.

New antenna modules can be customized without having to redesign every model, offering design flexibility and customer savings. The antenna also is available as an antenna/speaker module. Since the antennas are customized for each manufacturer, the price, lead time, and deliver depend upon each customer’s requirements.