New system applications of modern RF SAW filters

Modern mobile communication systems have a radio frequency between 800 MHz and 2.0 GHz. Wireless communication systems are one of the most rapidly growing areas of telecommunication. The cellular phone and the cordless phone are already established in today´s life. Additional systems like personal communication systems with global access and wireless data networks will become part of tomorrow´s communication. The development of such systems is focused on both technological evolution and functional features. The continuously increasing demand for miniaturised components has led to an establishment of SAW components in the circuit of advanced radio devices especially. Furthermore, the specific performance of RF SAW components has an influence on the receiver circuit already. The radio quality is increased, weight, size and total circuit cost are reduced