* SPICE netlist
Q2 DRIVE N008 N009 0 2N3904
Q1 N007 DRIVE N009 0 2N3904
Q4 N001 N001 COM 0 2N3906
Q3 N007 N001 COM 0 2N3906
L1 N008 ANTENNA 2mH Ipk=100m Rser=20 Rpar=10Meg Cpar=1pF
C_ant ANTENNA 0 8pF
R_sense N008 DRIVE 2.7
R1 DRIVE 0 470
V1 COM 0 4.5
Q5 DRIVE N007 N001 0 2N3906
Q10 0 N005 N002 0 2N3906
R6 COM N002 10k
C1 N003 0 10n
R7 N003 N002 1k
C2 N004 0 10n
R8 N004 N003 1k
Q9 0 DRIVE N005 0 2N3906
R5 COM N005 10k
Q11 COM N004 N006 0 2N3904
Q6 N010 N012 N013 0 2N3904
R3 N013 0 33
Q8 COM N010 N012 0 2N3904
Q7 N009 N012 N014 0 2N3904
R4 N014 0 1
R9 N006 N010 270
C3 N006 0 100n
C_hand N011 0 300pF
R_hand N011 0 100k
R2 COM DRIVE 470
.tran 0 1m 1u 1n
.ic I(L1)=0.001mA

* LTspice schematic (.asc)
Version 4
SHEET 1 2176 880
WIRE 208 -392 208 -440
WIRE 208 -392 112 -392
WIRE 336 -392 208 -392
WIRE 112 -360 112 -392
WIRE 336 -360 336 -392
WIRE -800 -344 -800 -392
WIRE -992 -312 -992 -360
WIRE 240 -312 176 -312
WIRE 272 -312 240 -312
WIRE -240 -296 -240 -344
WIRE -800 -248 -800 -264
WIRE -672 -248 -800 -248
WIRE -544 -248 -592 -248
WIRE -496 -248 -544 -248
WIRE -368 -248 -416 -248
WIRE -304 -248 -368 -248
WIRE 496 -248 496 -296
WIRE -800 -232 -800 -248
WIRE 240 -232 240 -312
WIRE 336 -232 336 -264
WIRE 336 -232 240 -232
WIRE -544 -216 -544 -248
WIRE -368 -216 -368 -248
WIRE 336 -200 336 -232
WIRE -992 -184 -992 -232
WIRE -864 -184 -992 -184
WIRE -240 -168 -240 -200
WIRE -128 -168 -240 -168
WIRE -992 -152 -992 -184
WIRE -240 -152 -240 -168
WIRE -128 -152 -128 -168
WIRE 112 -152 112 -264
WIRE 272 -152 112 -152
WIRE -1056 -104 -1088 -104
WIRE -800 -104 -800 -136
WIRE -544 -88 -544 -152
WIRE -368 -88 -368 -152
WIRE -128 -72 -128 -88
WIRE 16 -72 16 -104
WIRE 336 -72 336 -104
WIRE 336 -72 16 -72
WIRE 496 -72 496 -168
WIRE 496 -72 336 -72
WIRE 544 -72 496 -72
WIRE 704 -72 624 -72
WIRE 800 -72 704 -72
WIRE 960 -72 960 -168
WIRE 960 -72 880 -72
WIRE 1088 -72 960 -72
WIRE -992 -24 -992 -56
WIRE 112 -24 112 -152
WIRE 336 -24 336 -72
WIRE 960 -8 960 -72
WIRE -1088 24 -1088 -104
WIRE 16 24 16 -72
WIRE 16 24 -1088 24
WIRE 48 24 16 24
WIRE 704 24 704 -72
WIRE 704 24 400 24
WIRE 1088 24 1088 -72
WIRE 496 72 496 -72
WIRE 960 88 960 56
WIRE 112 104 112 72
WIRE 336 104 336 72
WIRE 336 104 112 104
WIRE -80 120 -80 72
WIRE -240 168 -240 -72
WIRE -144 168 -240 168
WIRE -240 200 -240 168
WIRE 112 200 112 104
WIRE 1088 200 1088 152
WIRE 1088 200 944 200
WIRE -80 248 -80 216
WIRE -80 248 -176 248
WIRE 48 248 -80 248
WIRE 496 248 496 152
WIRE 1088 248 1088 200
WIRE -784 264 -784 200
WIRE 944 264 944 200
WIRE -240 328 -240 296
WIRE 112 328 112 296
WIRE 944 360 944 328
WIRE 1088 360 1088 328
WIRE -784 376 -784 344
WIRE -240 440 -240 408
WIRE 112 440 112 408
FLAG 960 88 0
FLAG 960 -168 ANTENNA
FLAG 496 248 0
FLAG -784 376 0
FLAG -784 200 COM
FLAG 208 -440 COM
FLAG -800 -392 COM
FLAG -800 -104 0
FLAG -544 -88 0
FLAG -368 -88 0
FLAG -992 -360 COM
FLAG -992 -24 0
FLAG -240 -344 COM
FLAG -240 440 0
FLAG -80 72 COM
FLAG 112 440 0
FLAG -128 -72 0
FLAG 944 360 0
FLAG 1088 360 0
FLAG 496 -296 COM
FLAG 16 -104 DRIVE
SYMBOL npn 400 -24 M0
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL npn 48 -24 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL pnp 272 -264 M180
SYMATTR InstName Q4
SYMATTR Value 2N3906
SYMBOL pnp 176 -264 R180
SYMATTR InstName Q3
SYMATTR Value 2N3906
SYMBOL ind 784 -56 R270
SYMATTR InstName L1
SYMATTR Value 2mH
SYMATTR SpiceLine Ipk=100m Rser=20 Rpar=10Meg Cpar=1pF
SYMBOL cap 944 -8 R0
SYMATTR InstName C_ant
SYMATTR Value 8pF
SYMBOL res 640 -88 R90
SYMATTR InstName R_sense
SYMATTR Value 2.7
SYMBOL res 480 56 R0
SYMATTR InstName R1
SYMATTR Value 470
SYMBOL voltage -784 248 R0
SYMATTR InstName V1
SYMATTR Value 4.5
SYMBOL pnp 272 -104 M180
SYMATTR InstName Q5
SYMATTR Value 2N3906
SYMBOL pnp -864 -136 M180
SYMATTR InstName Q10
SYMATTR Value 2N3906
SYMBOL res -816 -360 R0
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL cap -560 -216 R0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL res -576 -264 R90
SYMATTR InstName R7
SYMATTR Value 1k
SYMBOL cap -384 -216 R0
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL res -400 -264 R90
SYMATTR InstName R8
SYMATTR Value 1k
SYMBOL pnp -1056 -56 M180
SYMATTR InstName Q9
SYMATTR Value 2N3906
SYMBOL res -1008 -328 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL npn -304 -296 R0
SYMATTR InstName Q11
SYMATTR Value 2N3904
SYMBOL npn -176 200 M0
SYMATTR InstName Q6
SYMATTR Value 2N3904
SYMBOL res -256 312 R0
SYMATTR InstName R3
SYMATTR Value 33
SYMBOL npn -144 120 R0
SYMATTR InstName Q8
SYMATTR Value 2N3904
SYMBOL npn 48 200 R0
SYMATTR InstName Q7
SYMATTR Value 2N3904
SYMBOL res 96 312 R0
SYMATTR InstName R4
SYMATTR Value 1
SYMBOL res -256 -168 R0
SYMATTR InstName R9
SYMATTR Value 270
SYMBOL cap -144 -152 R0
SYMATTR InstName C3
SYMATTR Value 100n
SYMBOL cap 928 264 R0
SYMATTR InstName C_hand
SYMATTR Value 300pF
SYMBOL res 1072 232 R0
SYMATTR InstName R_hand
SYMATTR Value 100k
SYMBOL res 480 -264 R0
SYMATTR InstName R2
SYMATTR Value 470