177 lines
5.3 KiB
Plaintext
177 lines
5.3 KiB
Plaintext
****************************************************************
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* Pi attenuator pad.
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* Parameters: R0 = impedance
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* DB = attenuation in dB (positive)
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.SUBCKT PIPAD 1 2 { R0 DB }
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R1 1 0 {R0*(1+2/(10**(DB/20)-1))}
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R2 1 2 {(R0/2)*(10**(DB/20)-10**(DB/-20))}
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R3 2 0 {R0*(1+2/(10**(DB/20)-1))}
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.ENDS
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****************************************************************
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* PCB Via inductance + extra L.
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* H = substrate height in inches
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* D = via diameter in inches
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* L = extra inductance in henries.
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.SUBCKT VIA 1 2 { H D L }
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LV 1 2 {L+
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+ 5.08E-9*H*(log((2+sqrt(4+D*D/(H*H)))*H/D)+
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+ .75*(D/H-sqrt(4+D*D/(H*H))))}
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.ENDS
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****************************************************************
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* Voltage-controlled oscillator.
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* Parameters: F = frequency @ Vc = 0 in Hz
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* KV = tuning sensitivity in Hz/volt
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* A = peak output amplitude
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* RO = output port resistance
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* Connections: Vc Out
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.SUBCKT VCO 20 2 { F KV A RO }
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RIN1 20 0 1E12
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VSW 30 0 DC 0 PULSE 0 1
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RSW 30 0 1E12
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BIN 3 0 V=(V(20)+{F/KV})*V(30)
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R3 3 0 1E6
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GSIN 2 0 22 0 {1/RO}
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RSIN 2 0 {RO}
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B1 1 0 I=-(V(22)*V(3))
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B2 22 0 I=V(1)*V(3)
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R2 1 0 1E9
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I1 0 1 PULSE {1E-9*A} 0
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C2 1 0 {.159154943/KV}
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C1 22 0 {.159154943/KV}
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R1 22 0 1E9
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.ENDS
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****************************************************************
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* Ideal Frequency converter.
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* Parameters: F = Oscillator frequency
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* RI = input port resistance
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* RO = output port resistance
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* Connections: In Out
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.SUBCKT FCNVT 1 2 { F RI RO }
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RIN 1 0 {RI}
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VLO 3 0 DC 0 SIN 0 1 {F}
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RLO 3 0 1E12
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BMIX 0 2 I=(V(1)*V(3))/{RO}
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RO 2 0 {RO}
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.ENDS
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****************************************************************
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* Sine wave RF power source.
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* Parameters: F = Frequency
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* R = Output resistance
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* P = Power in dBm
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* V = DC (EMF)
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.SUBCKT RFGEN 1 2 { F R P V }
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* + -
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Is 2 1 DC {V/R} SIN {V/R} {sqrt((10**(P/10))/(125*R))} {F}
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Ro 1 2 {R}
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.ENDS
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****************************************************************
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* Sine wave 2-tone RF power source.
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* Parameters: F1 = 1st tone frequency
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* F2 = 2nd tone frequency
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* R = output resistance
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* P = power per tone in dBm
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* V = DC (EMF)
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.SUBCKT 2TGEN 1 2 { F1 F2 R P V }
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* + -
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I1 2 1 DC {V/R} SIN {V/R} {sqrt((10**(P/10))/(125*R))} {F1}
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I2 2 1 DC 0 SIN 0 {sqrt((10**(P/10))/(125*R))} {F2}
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Ro 1 2 {R}
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.ENDS
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****************************************************************
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* Transmission lines
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* All ports must have external connections.
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* Parameters: Z0 = impedance
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* L = length in inches
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* VP = velocity-of-propagation rel. to air
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* Connections: 1+ 1- 2+ 2-
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.SUBCKT TXL 1 2 3 4 { Z0 L VP }
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T1 1 2 3 4 Z0={Z0} TD={L/(1.180315E10*VP)}
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.ENDS
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****************************************************************
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* Lossy transmission line.
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* All ports must have external connections.
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* Parameters: Z0 = impedance
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* L = length in inches
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* VP = velocity-of-propagation rel. to air
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* A = loss in dB/inch
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* Connections: 1+ 1- 2+ 2-
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.SUBCKT LTXL 1 2 3 4 { Z0 L VP A }
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O1 1 2 3 4 LOSSY
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.MODEL LOSSY LTRA LEN={L}
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+ R={5.848492e-3*A*Z0}
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+ L={Z0/(1.180315E10*VP)}
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+ C={1/(1.180315E10*VP*Z0)}
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.ENDS
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****************************************************************
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* 2 coupled transmission lines
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* All ports must have external connections.
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* Parameters: Z0E = even-mode impedance
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* Z0O = odd-mode impedance
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* L = length in inches
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* VP = velocity-of-propagation rel. to air
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* Connections: 1+ 1- 2+ 2- { Z0E Z0O L VP }
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.SUBCKT CPL2 1 2 3 4
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T1 1 0 3 0 Z0={Z0E} TD={L/(1.180315E10*VP)}
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T2 1 2 3 4 Z0={2*Z0E*Z0O/(Z0E-Z0O)} TD={L/(1.180315E10*VP)}
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T3 2 0 4 0 Z0={Z0E} TD={L/(1.180315E10*VP)}
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.ENDS
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****************************************************************
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* Generic Bipolar OpAmp - linear model
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* Parameters: G = open-loop gain in dB
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* FT = unity gain frequency in Hz
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* IOS = input offset current in amps
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* VOS = input offset voltage
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* IB = input bias current in amps
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.SUBCKT BIPOPA 2 3 6 7 4 { G FT IOS VOS IB }
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* - In + Out Vcc Vee
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RP 4 7 10K
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RXX 4 0 10MEG
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IBP 3 0 {IB-IOS}
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RIP 3 0 10MEG
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CIP 3 0 1.4PF
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IBN 2 0 {IB}
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RIN 2 0 10MEG
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CIN 2 0 1.4PF
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VOFST 2 10 {VOS}
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RID 10 3 200K
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EA 11 0 10 3 1
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R1 11 12 5K
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R2 12 13 50K
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C1 12 0 {13E-6/FT}
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GA 0 14 0 13 {0.0135*(10**(G/20))}
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C2 13 14 {2.7E-6/FT}
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RO 14 0 75
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L 14 6 {30/FT}
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RL 14 6 1000
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CL 6 0 3PF
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.ENDS
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****************************************************************
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* Generic FET OpAmp - linear model
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* Parameters: G = open-loop gain in dB
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* FT = unity gain frequency in Hz
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* VOS = input offset voltage
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.SUBCKT FETOPA 2 3 6 7 4 { G FT VOS }
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* - In + Out Vcc Vee
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RP 4 7 6K
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RXX 4 0 10MEG
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IBP 3 0 33E-12
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RIP 3 0 1E12
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CIP 3 0 3PF
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IBN 2 0 30E-12
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RIN 2 0 1E12
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CIN 2 0 3PF
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VOFST 2 10 {VOS}
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RID 10 3 1E12
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EA 11 0 10 3 1
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R1 11 12 5K
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R2 12 13 50K
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C1 12 0 {24E-6/FT}
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GA 0 14 0 13 {0.0135*(10**(G/20))}
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C2 13 14 {2.33E-6/FT}
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RO 14 0 75
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L 14 6 {4E-6/FT}
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RL 14 6 100
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CL 6 0 3PF
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.ENDS
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****************************************************************
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