Depending on the desired frequency characteristic, the resistor R1 and the two capacitors C1 and {TAIL ~ C2} can optionally be realized by means of the parasitic effects of {HEAD ~ the transistor} 
Depending on the desired frequency characteristic , the resistor R1 and the two capacitors C1 and { TAIL ~ C2 } can optionally be realized by means of the parasitic effects of { HEAD ~ the transistor }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD