Zinc-air battery modeling for small form factor IR-UWB Wireless Sensor Network radios

Impulse radio ultra-wideband (IR-UWB) is being employed in several IEEE standards for Wireless Sensor Network (WSN). This paper presents a battery model for small form factor, zinc-air button cell batteries with high energy density but also high internal impedance. Their usage in small form factor IR-UWB radios, requires accurate modeling to enable proper power management system design, avoiding system failure due to excessive supply voltage variation. In preamble synchronization phase all receiver blocks are used continuously, causing a current peak. The required battery model consists of seven resistor-capacitor (RC) sections.