L=25mm D=12mm 37T #24
VNWA with Calibration Process
12-term correction
VNWA with Calibration Process using Long Cal Wire
12-term correction
Cal Fixture with Long Cal Wire
SSA3021X Q Measurement
8.28MHz Q = 8.2802 / (8.3008 - 8.2599) = 202
330pF C0G
3.4MHz Q = 3.401 / 0.029133 = 117
VNWA Q Measurement
330pF C0G
Voltage Ratio Q Measurement
DG1032 50Ω 1.5Vrms at 3.3009MHz
Q = 8.585 / 0.081 = 106
SimSmith Model
Single Voltage, 81mV, Q Measurement
Single Voltage T50-2 37T #24 with 330pF C0G Q Measurement
- Vin = DG1032 3Vrms 50Ω 3.3072MHz
- Vout = Oscilloscope 85mVrms (Acquire = Average 32)
- Rs = (Vout * 50) / (2 * Vin - Vout)
Rs = 0.7185Ω
- L = 25330 / 3.3072^2 / 330 = 7.018uH
- XL = 2 * Π * 3.3072 * 7.018 = 146Ω
- Q = 146 / 0.7185 = 203
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VNWA L||C S21 2-Port Through BW Q Measurement
Injection Transformer Q Measurement
- Injection Transformer = FT50-43 50:1 turns
- DUT = T50-2 37T #24 with 330pF C0G
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Oscilloscope Vout Vrms Measurement
- Fixture Vin = DG1032 3Vrms 50Ω
- Oscilloscope Vout ~=12Vrms
- Q ~= 12 / (3/50) = 200
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Injection Transformer SimSmith Model
- Arbitrary Calibration using
SDR-Kit BNC Calibration Kit
Delays = Cal Kit Delay + -106ps (11mm Amphenol 031-203-RFX)
- OSLT,Th calibration with empty fixture in line.
- S11 from t2s(S21) with S21 12 Term Correction
- Fair-Rite 2631801202
- 112uH at 10kHz
- Measured S21 3dB BW Q at SRF = 0.602
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FT114A-31 9T SimSmith Inductor Model
- Fair-Rite 5943000321
- AL inductance = 440 * 5^2 = 11,000nH = 11uH
- Measured 7MHz S21 3dB BW Q = 1.07
- Inductance at 7MHz = (25330 / 7^2) / 47 = 11uH
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FT50-43 5T 100kHz to 30MHz t2s(S21)
- Arbitrary Calibration using
SDR-Kit BNC Calibration Kit
Delays = Cal Kit Delay + -106ps (11mm Amphenol 031-203-RFX)
- OSLT,Th calibration with empty fixture in line.
- DUT Fixture same as Q Fixture above with 47pF capacitor removed
- S11 using t2s(S21) with S21 12 Term Correction
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