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