
Parametric Amplifiers 257
INPUT
C4
II
i!
C1
V+
C7 FEED-THROUGH 1
CAPACITOR J
------~ /
cs FEEO-TH"OUGH'I
~.~
CAPACITOR J
BIAS
RFC 1
C6
'
II
(A)
C2 C
J2
OUTPUT
BIAS V+
C3 FEED-THROUGH 1
CAPACITOR
C1
INPUT
II I
~.
/_~ [C4 FEED-THROUGH
CAPACITOR
RFC1 RFC2
X_. LINE
4
A
II L2
Ii
l
L I I/ol ,~
v,
X
LINE
(B)
Figure 13-5 A) Common base amplifier; B) common emitter amplifier.
J2
OUTPUT
A reactance differs from a resistance in that the latter dissipates power, while
reactances store energy and redeliver it to the circuit without any power dissipa-
tion. If the reactance can be varied at a rapid rate, then the energy stored ...