A microstrip filter having a plurality of hairpin microstrip resonators
each having two substantially rectangular legs connected at one end and
generally configured in a "U" shape. The microstrip filter may comprise a
first of the plural resonators operatively connected to a first feed
point, a second of the plural resonators operatively connected to a
second feed point, and a third of the plural resonators operatively
connected between the first and second resonators where an end portion of
one of the legs of one of the resonators is tapered so that a thickness
of the one leg is greater at one end of the one leg than at another end
of the one leg.