The invention is directed to synthetic receptor which comprises a polyfunctional organic template covalently linked to two or more oligomers which may independently be the same or different and may independently be straight chain, cyclic or branched. For a two-port network connected between a first port and a second port, a method can include defining an equivalent PI network including a first equivalent network element in communication with the first port, a second equivalent network element in communication with the second port, and a third equivalent network element connected between the first port and the second port. output signals of a plurality of digital radio transmitters in a digital radio transmitter system is described. The improvements can be obtained simultaneously by adding both the adhesion promoter and the plasticizer to SU-8 photoresist compositions.