A switching apparatus for use with a plurality of respective integrated circuit devices, each device including a plurality of respective pin terminals, wherein each of said respective devices can receive a plurality of high frequency input signals and can select from among the received input signals to provide at least one high frequency output signal, said switching apparatus comprising:
- a plurality of respective substantially planar mounting platforms on which said respective devices are to be respectively mounted, wherein said respective mounting platforms are aligned substantially parallel to each other;
- a plurality of respective input lines for conducting the respective input signals, each of said respective input lines extending in a direction substantially perpendicular to the respective planes of said respective mounting platforms, and each of said respective input liens being electrically coupled to said respective mounting platforms that are to mount said respective devices that are to receive respective input signals conducted by each of said respective input lines;
- and
- a plurality of respective isolation lines for electrically isolating adjacent ones of said input lines from each other, each of said respective isolation lines extending in a direction substantially perpendicular to the respective planes of said respective mounting platforms, such that adjacent ones of said input lines have at least one of said isolation lines interposed therebetween.