Pulsed Power Design Considerations for a Prolate Spheroidal Impulse Radiating Antenna Intended for Biological Applications

The invention provides a filter cell and a filter cartridge in which the filter cell includes an inner separator disc having a central aperture about which is located a plurality of upstanding pins or teeth, the pins or teeth being formed integrally with said separator disc. The filter cell includes layer(s) of filtration medium. The filter cartridge includes a plurality of filter cells arranged in contiguous and stacked relationship, adjacent filter cells being spaced from one another by spacer rings or gaskets, means being provided to hold the filter cells and spacer rings or gaskets in position to form said cartridge, the cartridge having an elongate central aperture into which filtered fluid may flow.