| ISOTEK ELECTRONICS LIMITED Patent applications |
| Patent application number | Title | Published |
| 20090231056 | Band Combining Filter - A band combining filter for passing signals in a communications band includes a plurality of cascaded directional filters. Each directional filter has at least two inputs and at least two outputs. The nth directional filter is arranged such that output signals O | 09-17-2009 |
| 20090072927 | TUNEABLE BANDPASS FILTER - A tuneable bandpass filter comprising a plurality of coupled resonators, the filter comprising
| 03-19-2009 |