Patent ID: 8014731

Claim:
Circuitry comprising: a voltage-controlled switch having transmitter inputs, receiver inputs, and an output, the voltage-controlled switch for electrically connecting the output to a single fixed transmission path containing only one transmitter input or one receiver input; and passive components forming low-pass filters that are electrically connected to the transmitter inputs, the passive components being part of a ceramic passive module that includes a base body comprised of dielectric layers and electrically conductive layers among the dielectric layers; wherein an entirety of the voltage-controlled switch is on an upper portion or a lower portion of the base body; and wherein: the voltage-controlled switch comprises K (K>1) transmitter inputs and L (L>1) receiver inputs, and has K+L switching states; and the passive components form K low-pass filters, each low-pass filter being electrically connected to one transmitter input.