The novel circulator includes a substrate, a predetermined number of microstrip lines disposed on a first surface of {TAIL ~ the substrate}, {HEAD ~ a ground layer} and a predetermined number of electrical contacts disposed on the second surface of the substrate, and a mechanism for coupling each microstrip line to one of the electrical contacts 
The novel circulator includes a substrate , a predetermined number of microstrip lines disposed on a first surface of { TAIL ~ the substrate } , { HEAD ~ a ground layer } and a predetermined number of electrical contacts disposed on the second surface of the substrate , and a mechanism for coupling each microstrip line to one of the electrical contacts
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH