Looks promising, with a midband gain of about 0.97.
Use a PNP/JFET cascode as the slower input (as I guess sub-GHz PNPs is
all we have, now) and fast NPNs on the output.
It's definitely not expensive, anyway:
<
https://imgur.com/a/MTh2kl7>
Version 4
SHEET 1 5120 680
WIRE 592 -1024 592 -1104
WIRE 592 -1024 -240 -1024
WIRE -240 -848 -240 -1024
WIRE -240 -656 -240 -768
WIRE 176 -656 -240 -656
WIRE 800 -656 240 -656
WIRE -240 -528 -240 -656
WIRE 592 -416 592 -1024
WIRE -240 -368 -240 -448
WIRE 528 -368 -240 -368
WIRE -240 -256 -240 -368
WIRE 592 -192 592 -320
WIRE 592 -192 -192 -192
WIRE 800 -192 800 -656
WIRE 800 -192 592 -192
WIRE -240 0 -240 -160
WIRE -576 48 -672 48
WIRE -416 48 -512 48
WIRE -304 48 -416 48
WIRE 592 128 592 -192
WIRE -240 176 -240 96
WIRE 528 176 -240 176
WIRE -832 240 -832 176
WIRE -672 240 -672 48
WIRE -416 288 -416 48
WIRE -240 288 -240 176
WIRE 592 304 592 224
WIRE -832 464 -832 320
WIRE -672 464 -672 320
WIRE -416 464 -416 368
WIRE -240 464 -240 368
WIRE 592 464 592 384
FLAG -240 464 0
FLAG 592 464 0
FLAG -416 464 0
FLAG -672 464 0
FLAG -832 464 0
FLAG -832 176 Vcc
FLAG 592 -1104 Vcc
SYMBOL njf -192 -256 M0
SYMATTR InstName J1
SYMATTR Value 2N3819
SYMBOL res -256 272 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL npn 528 -416 R0
SYMATTR InstName Q1
SYMATTR Value BFR91A
SYMBOL npn 528 128 R0
SYMATTR InstName Q2
SYMATTR Value BFR91A
SYMBOL res 576 288 R0
SYMATTR InstName R2
SYMATTR Value 470
SYMBOL res -432 272 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL cap -512 32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL voltage -672 224 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 0
SYMATTR Value2 AC 1
SYMATTR InstName V1
SYMATTR Value SINE(0 0.2 1Meg)
SYMBOL voltage -832 224 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 9
SYMBOL pnp -304 96 M180
SYMATTR InstName Q3
SYMATTR Value MPSH81
SYMBOL res -256 -544 R0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL res -256 -864 R0
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL cap 240 -672 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 100n
TEXT -704 488 Left 2 !;tran 0.1
TEXT -640 368 Left 2 !.ac oct 10 10k 1G
TEXT 1208 -472 Left 2 !.MODEL BFR91A NPN\n+ IS = 1.32873E-015\n+ BF = 1.02000E+002\n+ NF = 1.00025E+000\n+ VAF = 5.19033E+001\n+ IKF = 8.15511E+000\n+ ISE = 1.39029E-014\n+ NE = 1.51292E+000\n+ BR = 1.76953E+001\n+ NR = 9.94038E-001\n+ VAR = 3.28032E+000\n+ IKR = 1.00000E+001\n+ ISC = 1.04297E-015\n+ NC = 1.18993E+000\n+ RB = 1.00000E+001\n+ IRB = 1.00000E-006\n+ RBM = 1.00000E+001\n+ RE = 7.63636E-001\n+ RC = 9.00000E+000\n+ EG = 1.11000E+000\n+ XTI = 3.00000E+000\n+ CJE = 2.03216E-012\n+ VJE = 6.00000E-001\n+ MJE = 2.90076E-001\n+ TF = 6.55790E-012\n+ XTF = 3.89752E+001\n+ VTF = 1.09308E+001\n+ ITF = 5.21078E-001\n+ CJC = 1.00353E-012\n+ VJC = 3.40808E-001\n+ MJC = 1.94223E-001\n.ENDS
TEXT 1216 472 Left 2 !.model MPSH81 PNP(Is=10f Xti=3 Eg=1.11 Vaf=100
Bf=133.8 Ise=1.678p Ne=2.159 Ikf=.1658 Nk=.901 Xtb=1.5 Var=100 Br=1
Isc=9.519n Nc=3.88 Ikr=5.813 Rc=7.838 Cjc=2.81p Mjc=.1615 Vjc=.8282
Fc=.5 Cje=2.695p Mje=.3214 Vje=.7026 Tr=11.32n Tf=97.83p Itf=69.29
Xtf=599u Vtf=10 Vceo=20 Icrating=50m mfg=Fairchild)
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