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FM antenna module eliminates headphone cable antennas

Posted: 02 Sep 2010     Print Version  Bookmark and Share

Keywords:FM antenna module  mobile  receive/transmit 

Antenova Ltd reveals the M10385, a dual-mode receive/transmit internal surface mount FM antenna module that targets a broad range of mobile and digital media device applications.

The PCB antenna module design provides a simple drop-in solution to address the growing market for FM radio functionality in mobile and media devices such as mobile phones, personal navigation devices, personal media players, media tables and digital photo frames without the need for external headphone or retractable antennas.

Greg McCray, CEO, Antenova explains, "In mobile phone applications, M10385 eliminates the need for traditional headphone cable antennas and is suitable for use with Bluetooth headsets. In addition, M10385 has the transmit capability which enables any device fitted with the FM antenna module to become a personal FM transmitter. So, for example, a user could transmit the music from their mobile phone, PMP or MP3 player to their car radio, thereby providing a no cost in-car audio integration option for listening to their music on the car's stereo sound system. The same can be applied to the home stereo system with FM radio as well."

The M10385 is an active FM antenna module consisting of Antenova's patent pending FM antenna with a matching circuit and low noise amplifier (LNA) in a 30mm x 5mm x 1.5mm package, with the convenience of a standard SMD. It is capable of receiving/transmitting FM frequencies from 87.5MHz to 108MHz and is intended to be planar mounted at the edge of the host PCB for minimum space requirement.

A minimum clearance of 2mm between the antenna and the host PCB ground plane is recommended for the best FM signal reception. The module offers easy interface to any FM receiver as the LNA output is matched to 50Ω, but custom impedance can also be provided.

- Jean-Pierre Joosting
EE Times

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