基于5G频段的发夹型滤波器设计

5G Band-based Design of Hairpin Filter

随着通信频率的提高,以往的LC元件由于尺寸和生产工艺的问题已经难以适应5G通信技术的发展需要。因此,对滤波器提出了更严格的要求,包括更高的性能、更小的尺寸、更轻的重量和更低的成本,于是微带滤波器应运而生。针对5G通信的需求,采用ADS射频仿真软件辅助,设计了一款3.3~3.6 GHz的5阶0.1 dB等纹波Chebyshev微带发夹式带通滤波器。设计结果表明,插入损耗小于2 dB,回波损耗最大可达近30 dB。它不仅体积小巧、成本低廉,而且具有较低的插入损耗和较高的矩形系数,对日后5G的推广具有较高的应用价值。

With the increase of communication frequency, conventional LC devices, due to their size and production process, are difficult to adapt to the development needs of 5G communication technology. Therefore, more stringent requirements are imposed on the filter, such as higher performance, smaller size, lighter weight, and lower cost, and thus the micro-strip filter emerges as the times require. For the demand of 5G communications, ADS radio frequency simulation software is used to assist the design of the 5th order 0.1 dB equal-chord Chebyshev micro-strip hairpin band-pass filter from 3.3 to 3.6 GHz. The experiment results indicate that with insertion loss of less than 2 dB and the return loss of up to 30 dB. This filter is compact and low-cost, and has fairly low insertion loss and relatively high rectangular-factor. And all this would be of comparatively high application value for the promotion of 5G in the future.