At the recent Microwave Theory & Techniques Symposium (MTT-S) in Philadelphia, PA this past June, Keithley Instruments announced an innovative pair of instruments aimed at developers of battery-powered wireless circuitry. The firm's models 2306 and 2306-V dual-channel battery/charger simulators are essentially high-performance programmable power supplies that can simulate the dynamic conditions of a battery presented to such circuits as cellular handsets, power amplifiers for wireless local area networks (WLANs), and other battery-powered wireless devices and components. The design of the instruments earned a US Patent (No. 6,204,647) for their variable-output-resistance capability for simulating the changing response of a battery to a load. Output channels can be externally triggered to operate at predefined voltages, and built-in sequencing routines can execute as many as 20 different voltage and measurement sequences to help, for example, evaluate the turn-on performance of a GaAs cellular-handset power amplifier.

More information on these innovative battery simulators, including white papers and application notes, can be found on the company's website.

Keithley ==> http://lists.planetee.com/cgi-bin3/DM/y/eA0CWyaL0A0BB750A4