Ultra-miniature SAW filter new structure: for 5G IoT mobile device

In recent years, with the rapid development of mobile communication technology, it has developed from the initial 2G to the current 4G. Therefore, with the rapid development of 4G network, major communication provider have begun to actively arrange 5G equipment and technology. However, miniaturization of SAW filter is one of the key components in 5G network development. That's the basic requirement of mobile communication and other portable products.Based on above, in order to reduce the size of SAW filter, three measures are usually taken: First is to optimize design device with chip, second is to improve the packaging format of the device, third is the SAW filter encapsulation of different functions together constitute a combination device. So, is committed to reducing SAW component technology is feasible. But it's encountered some bottlenecks in packaging process, due to the current SAW filter packaging process is limited by the surface adhesion technology or solder paste adhesion technology. Therefore, it is not easy to install crystal, poor accuracy, and continue to reduce the size of the product... etc.In this paper, two methods of forming a connection structure with SAW filter were presented to widely used in packaging development trend requirements for 5G IOT devices.