The exponential growth in wireless communication systems in recent years has been due to the requirements of small high performance microwave/RF devices and filters in particular. The main limitation of microwave devices based on traditional technologies is that these technologies are not compatible with the manufacturing process of standard integrated circuits (IC). Microwave devices based on acoustic resonators, and bulk acoustic wave (BAW) resonators in particular, overcome this limitation since this technology is compatible with standard IC technologies. On the other hand, BAW resonators...