UWB WBAN Multislot Antenna with Screening Backplane
Image of the UWB WBAN Multislot Antenna with Screening Backplane.

Wireless body area networks - also known as body sensor networks (BSNs) - can be defined as systems that provide wireless communication between wearable or implantable electronic devices. The network may also include other forms of wearable technology, as well as devices carried on various body positions (e.g. pockets, bags and in-hand). If a WBAN network includes a so-called ‘gateway’ device - connecting wearable devices to the internet – it is termed a wireless personal area network (WPAN). Such networks may provide inexpensive and real-time monitoring services – particularly useful in applications where certain information must trigger an immediate response (e.g. monitoring for medical emergencies)

In recent years, ultra-wideband (UWB) technology has received great interest for wireless body area networks. A challenge for the design of WBAN antennas remains their potential sensitivity to the proximity of the human subject.

The Multislot Antenna with Screening Backplane (MSA-BP) structure was designed using a desensitization technique, in order to reduce the effect of the human body on the overall performance (see this antenna’s Information Document in Antenna Magus for literature references). The design provides a wideband impedance match with a reflective metallic backplane to reduce backward radiation.

Typical gain: 0.75f0, f0 and 1.25f0
Typical reflection coefficient versus frequency