Mitsubishi Electric and the Electronic Component Group of Kyocera have introduced the world’s first dual-band compatible E-GSM/DCS (Enhanced – Global System for Mobile Communication/ Digital Cellular System) transmitter module for mobile phone applications.
Occupying only 0.24 cubic centimetres, enabling it to take only one-third of the board space of previous-generation modules, the new transmitter module includes the antenna switch module, power amplifier, and coupler components as well as an EN61000-compliant electrostatic discharge (ESD) protection circuit in the same unit.
The module’s high integration makes designing an external impedance-matching circuit unnecessary, thereby shortening development time.
The module leverages technological strengths from each company – Mitsubishi Electric’s module and gallium arsenide (GaAs) HBT MMIC design and manufacturing technologies and Kyocera’s LTCC and antenna switch module technologies.
The module achieves a 43.4 percent efficiency for E-GSM transmissions at 33 dBm – 10 percent higher than conventional solutions. DCS transmissions realise a 31.1 percent efficiency at 30 dBm.
The module’s ESD protection circuit can provide electrostatic discharge protection up to +/- 4 Kvolts, which is required by the European Union EN61000 standard.
Mitsubishi Electric will sample the dual-band compatible E-GSM/DCS transmitter module in August 2001, with volume production in February 2002. Kyocera will begin volume production in the second quarter of 2002.