The HL9452 from Hyperlabs is a Low-Pass Absorptive Rise Time Filter that operates from 1 to 15 GHz. It can handle up to 1 W of input power and provides superior return loss of -15 dB with a flat group delay. The filter is designed using Hyperlabs’ proprietary absorptive filtering and offers a similar frequency response as 4th order Bessel-Thompson filters. This RoHS-compliant filter is available in a module that measures 45.72 x 15.24 x 10.16 mm with SMA (1x plug, 1x jack) connectors. It is suitable for use in high-speed telecom and digital networks, as anti-aliasing filters in digital oscilloscopes, and to limit the RF bandwidth to known values.