Much has been written about “5G”, the next-generation mobile standard. As with the early stages of previous generations, it is difficult to see clearly the direction of the future. The intersection of technological hurdles, economic realities, and political forces creates a path that is not only unpredictable, but interestingly interesting in retrospect. Despite this history, we continue to predict. This is our way. Despite all the publications on 5G and many technical issues, there is a lack of information about the necessary RF filters. This is somewhat surprising, since filters have become a major part of the radio in cell phones. State-of-the-art smartphones now contain over 60 filters and make up the largest portion of RF wallets. A key starting point is the proposed new RF band that will be used for 5G. The FCC recently proposed band sections between 3.5-6 GHz, 27-40 GHz and 64-71 GHz. As anyone familiar with radio in this field will know, each band conducts its own unique problems and solutions. The range of filter solutions for 5G will be more diverse than the current mobile technology band. One
5G implementations are accelerating, and the promise of higher data rates means more challenges. The demand for more bandwidth increases the potential for interference from mobile devices, leading to the need for advanced filtering. Qorvo’s BAW filters have evolved to handle higher frequencies in the shrinking RFFE space while maintaining RF output power.
The coefficient is implemented as the distance between the two resonators and the Q value is implemented as the distance between the input port and the first resonator. As a result, it can be seen that the return loss is more than 15dB, the insertion loss is less than 0.35dB, and the VSWR is 1.62 in the passband (3.4 ~ 3.5GHz). The filter has the advantages of small insertion loss, small size, and excellent out-of-passband rejection, so it can be applied to the 5G band wireless communication system to improve the communication quality of the communication system with better suppression performance.