A connecting structure for high frequency circuits is provided, with which
components can be readily replaced, and which does not require high
assembly accuracy and is applicable in a broad band. First and second
circuit boards each having strip lines on top surfaces thereof are placed
to secure a gap therebetween. Patch portions each constituting a resonator
are formed by extending the width of the strip lines, and a supporting
member of a foam material is placed on the top of the patch portion formed
on the first circuit board. A parasitic element made of a dielectric
material is cantilevered by the supporting member. The free end side of
the parasitic element is placed above the patch portion formed on the
second circuit board while securing a predetermined space between the
parasitic element and this patch portion. A strong electrical connection
is established by the parasitic element that electromagnetically couples
non-continuing portions, thereby making it possible to cut a direct
current.
