Study of ultra small dielectric filter for 5GWiFi
SHEN Jian ming1, HE Ying1, HU Yuan yun2, XV Xi gen3

(1.Electromechanical and Automobile Campus, Jiaxing Vocational Technical College, Jiaxing 314036, China;

2.Jiaxing GLEAD Electronics Co., Ltd.,Jiaxing 314003, China;
3.Zhejiang Fangyuan Electric Equipment Testing Co., Ltd., Jiaxing 314001, China)

Abstract: Aiming at the problems that network congestion, poor signal quality and so on of wireless communication, although the dielectric filter had large power capacity and lower insertion loss, the drawback were larger volume and could not integration, the broadband filter for fifth generation WiFi transmission technology was pursued, mainly from three aspects of material selection, software simulation and process design to discuss. Firstly, ceramic materials with high dielectric constant were selected to achieve good microwave dielectric properties by adopting special sintering method. Secondly, the parameters of the filter were optimized by the HFSS of the 3D microwave simulation software. Finally, the laser lithography of refining processing technology was applied to get the small size and the optimum performance of the filter. The results indicate that product size is only 1/8 of the same dielectric filter, the small size of the dielectric filter is realized; larger bandwidth, lower insertion loss, solves the network congestion; higher stopband attenuation, enhances the quality of the signal.

Key words: 5G WIFI;HFSS; ultra wide band; filter; simulation