With the advance of digital transformation and rising adoption of cloud services, IoT*1 devices have become more prevalent. UWB*2 wireless communication technology is an example of the IoT technology being used as a communications method that is becoming commonplace. UWB wireless communication technology is utilized in sophisticated compact devices including smart tags and smart keys used for the purpose of loss protection.
As a technology that allows for advanced location measurement and secure communication, UWB wireless communication is expected to be adopted in an even wider array of fields in the future. However, due to the communication load involved in its data transmission and reception, UWB wireless communication technology requires power supplies that can provide sufficient power even in confined spaces. Therefore, one of the issues with the utilization of UWB wireless communication technology is the lack of power storage devices (batteries) that can accommodate the peak communication load output. Because the peak power output is required in data transmission and reception, designing power supplies for devices to accommodate the peak power output also poses the problems of power supplies becoming too large and costs becoming too high.
Another challenge is that it is difficult to achieve the peak power output with small batteries such as coin batteries.
A solution to these issues is the usage of ECAS series capacitors together with the batteries to provide a power assist for the batteries.