2.4 and 5.2 GHz dual-band antenna fabricated on flexible parylene membrane

A 2.4 and 5.2 GHz dual-band monopole antenna fabricated on a flexible parylene membrane for Bluetooth and wireless local area network (WLAN) modules was designed and fabricated. The measured results show a good antenna performance and agree very well with the design simulations in both return loss and radiation characteristics. Parylene is a flexible polymer film; it can be deposited on various substrates and peeled off after completing device processes as stand-alone thin-and-flexible-substrate-containing devices. Owing to its excellent physical and chemical properties such as its low dielectric constant, light weight, low conductivity, and inertness to chemicals, parylene is also suitable for fabrication of many other RF devices.