A fully metallic glide-symmetric waveguide filter with transmission in $Ka$ -band and attenuation at its second harmonic is proposed. The filter is low-loss and cost-effective for high frequencies, and it can be easily integrated with an antenna. Glide symmetry and the possibility of breaking this symmetry provide an additional degree of freedom for passband and stopband control. A new kind of 2-D glide symmetry, referred to as braided glide symmetry, is presented, showing an increased attenuation per unit cell.

中文翻译：

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用于毫米波频率的 5G 的孔滑对称滤波器

一种全金属滑动对称波导滤波器，在 $K$ 提出了在其二次谐波处的 -band 和衰减。该滤波器对于高频而言损耗低且具有成本效益，并且可以轻松地与天线集成。滑移对称性和打破这种对称性的可能性为通带和阻带控制提供了额外的自由度。提出了一种新的二维滑动对称性，称为编织滑动对称性，显示每个单位单元的衰减增加。