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VNA Sandbox User Guide
Version 2B
MegiQ
VNA-Sandbox
User Guide
MegiQ BV
Weegschaalstraat 3
5632 CW Eindhoven
The Netherlands
+31 (0)40 291 1479
sales@megiq.com
www.megiq.com
www.megiq.com
Saelig Company, Inc. 71 Perinton Parkway, Fairport, NY 14450 USA 1-585-385-1750
© 2013 - 2017, MegiQ
info@saelig.com
www.saelig.com
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Related Manuals for MegiQ VNA Sandbox
Summary of Contents for MegiQ VNA Sandbox
- Page 1 VNA Sandbox User Guide Version 2B MegiQ VNA-Sandbox User Guide MegiQ BV Weegschaalstraat 3 5632 CW Eindhoven The Netherlands +31 (0)40 291 1479 sales@megiq.com www.megiq.com www.megiq.com Saelig Company, Inc. 71 Perinton Parkway, Fairport, NY 14450 USA 1-585-385-1750 © 2013 - 2017, MegiQ info@saelig.com...
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Page 2: Table Of Contents
VNA Sandbox User Guide Version 2B table of contents Table of Contents table of contents........................3 general practice........................5 about this guide........................6 performing a VNA measurement..................7 calibration..........................9 Single port measurements....................14 series resonant circuit (21)....................15 series resonant circuit with parallel resistor (22).............16 series resonant circuit with resistor in series (23)............17... -
Page 3: About This Guide
VNA Sandbox User Guide Version 2B About this guide www.megiq.com © 2013 - 2017, MegiQ... -
Page 4: General Practice
There is often a difference between allowable AC and DC input. With the MegiQ VNA maximum DC input is 20 V and maximum AC input is +20 dBm (100mW into 50Ω ->... - Page 5 Fore this you will use the MegiQ VNA-Sandbox, a PCB with several easy demo circuits, but well chosen in order to present you with both the many features of the MegiQ VNA and the use of vector network analysis in every day life of an RF-engineer / -designer.
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Page 6: Performing A Vna Measurement
Make sure you use the right cables, connectors. • Power up the instrument and let it warm up. (the MegiQ VNA is very temperature • stable, so in most cases you do not have to wait) Make the right measurement set-up (hardware) and the set-up of the instrument. -
Page 7: Calibration
VNA Sandbox User Guide Version 2B Calibration www.megiq.com © 2013 - 2017, MegiQ... - Page 8 The instrument stores this set of calibration data, and since the MegiQ VNA is very temperature stable, you will not have to perform this calibration routine very often.
- Page 9 VNA Sandbox User Guide Version 2B Calibration Pane the calibration pane By selecting the calibration tab you get the calibration pane. In the list “Calibration” you see what calibrations are needed. You can select a calibration you want to perform in this list and then press the button “Calibrate”. Of coarse after you made the right connections to known impedances.
- Page 10 “VSB21/22:LCR series” This will pre-set the instrument and the display, which is handy if you are an new-comer to the MegiQ VNA-0440. Later on you can do all these, or different settings yourself, depending on the measurement. 1. GUI, Tab Generator: choose frequency range &...
- Page 11 VNA Sandbox User Guide Version 2B instrument set-up 1. GUI, Tab Generator: choose frequency range & generator power as appropriate. open 2. Connect both ports to the “Open” circuits on the Sandbox (circuit 11) 3. GUI, Tab Calibration: select P1-Open / P2-Open and press Calibrate.
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Page 12: Single Port Measurements
VNA Sandbox User Guide Version 2B Single-Port Measurements www.megiq.com © 2013 - 2017, MegiQ... - Page 13 RF-engineer. experiment! You can experiment freely with the circuits on the MegiQ VNA-Sandbox. Feel free to watch the effects of a loosely connected cable, of changing one cable by a slightly longer one without recalibrating.
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Page 14: Series Resonant Circuit (21)
VNA Sandbox User Guide Version 2B series resonant circuit (21) An ideal series resonant circuit consist of a pure capacitor in series with an inductor and is therefore a pure imaginative impedance, except at resonance where the capacitive and the inductive part cancel each out resulting... -
Page 15: Series Resonant Circuit With Parallel Resistor (22)
VNA Sandbox User Guide Version 2B series resonant circuit with parallel resistor (22) Here the series resonant circuit is bypassed by a pure resistor, introducing a reel part in the impedance. what do you see Near to resonance you will see about the same behaviour... -
Page 16: Series Resonant Circuit With Resistor In Series (23)
VNA Sandbox User Guide Version 2B series resonant circuit with resistor in series (23) Now you find a resistor in series with the series LC-circuit, again introducing a reel part tot the imaginary impedance of the LC-resonant circuit. what do you see... -
Page 17: Series Resonant Circuit With Resistor Parallel With Inductor (24)
VNA Sandbox User Guide Version 2B series resonant circuit with resistor parallel with inductor (24) Again a series LC-circuit, but now with a 50Ω resistor parallel to the inductor. This simulates a very lossy coil at high frequencies. what do you see... -
Page 18: Parallel Resonant Circuit (31)
(25) high-pass filter (26) band-pass filter (43) voltage controled low-pass filter (35) Please contact MegiQ for more information about the VNA-Sandbox that includes the full version of this tutorial. sales@megiq.com +31-40-2911479 Saelig Company, Inc. 71 Perinton Parkway, Fairport, NY 14450 USA 1-585-385-1750 info@saelig.com...
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