The ABF-28G+ from Mini Circuits is a Thin-Film Filter with a Passband from 26.5 to 29.5 GHz. It can handle an input power of up to 1 W and has a passband insertion loss of 3.5 dB. The filter provides a rejection of 45 dB in the lower stopband (from DC to 23 GHz) and up to 60 dB in the upper stopband (from 31.5 40 GHz). It ensures an enhanced and repeatable performance via thin-film on Alumina substrate, using a sputtering process. This filter has an operating temperature range from -55°C to 125°C with very minimal change in electrical performance across the range. It is available in a surface-mount package and is suitable for use in Band n257 5G telecommunications.