Higher-order lowpass filters made using a “DC-free” technique can be much more effective in removing ripple from high voltage sources, yet respond rapidly to step-voltage changes and allow far lower ...

K&L Microwave, Inc.’s Filter Wizard is a free Web-based solution that helps design engineers effectively select and confirm the feasibility of RF and microwave filter products for applications—from ...

The required selectivity of a customer design implied four-pole filters with about 10% bandwidth (passband width about 10% of the centre frequency). There was a catch---a tight power Continue Reading ...

An easy way to conceptualize active filters is thinking about audio speakers. A speaker crossover has a low-pass, high-pass and band-pass effect breaking a signal into three components based upon ...