Philips Semiconductors last month introduced the SA1921, an RF receiver front-end designed for Asian Cellular Satellite System (ACeS) dual-band mobile phones.
ACeS is a regional satellite-based mobile telecommunications standard designed to provide telephone and data services in more than 50 countries worldwide, including in Southeast Asia, Asia-Pacific and parts of Russia and Mongolia, said Philips. The operating frequency for ACeS is 1525 MHz-1559 MHz, while the cellular frequencies operate in the 900 MHz and 800 MHz ranges.
