Consequently , their models did not show the multiple passbands that are a characteristic of all distributed element filters .
Lagrange , Godfrey , and Campbell all made simplifying assumptions in their calculations that ignored the distributed nature of their apparatus .
Their models did not show the multiple passbands that are a characteristic of all distributed element filters .
Lagrange , Godfrey , and Campbell all made simplifying assumptions in their calculations that ignored the distributed nature of their apparatus .