The planar filter 4, wherein said {TAIL ~ ground electrode} leads to the other of said sides of said substrate on each of {HEAD ~ said longitudinal sides} of the planar filter 
The planar filter 4 , wherein said { TAIL ~ ground electrode } leads to the other of said sides of said substrate on each of { HEAD ~ said longitudinal sides } of the planar filter
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH