Abstract: A miniature, multimode, modular RF terminal includes a plurality of processing modules, where at least one of the processing modules includes an external connector for conveying an input or output RF signal. The terminal further includes a segmented coaxial analog bus comprising a plurality of multi-conductor coaxial connectors, wherein each of the multi-conductor coaxial connectors is integrated in or forms a portion of one of the processing modules, and wherein the segmented coaxial analog bus conveys RF signals between the processing module having the external connector and at least one other processing module. The modules of the terminal can be arranged in a stack, on a rigid substrate, connected via a flexible substrate or combinations thereof. The terminal supports processing of communication, navigation and sensor signals.