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Rectangular coaxial line characteristic impedance calculator

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Section of a coaxial line:

coax strip

 


ENTER DATA:
Select measurement units
Frequency: [MHz]
Relative permittivity εr  
Shield width a [mm]
Shield height b [mm]
Center strip width W [mm]
Center strip height t [mm]
Calculate Z0
↓
↑
Calculate W
RESULT:
Z0 [Ω]
L (λ/4) [mm]

JavaScript source code:
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Limitations and features of antenna calculations

 The calculation formula is from handbook: “Microwave transmission-line impedance data”, M.A.R. Gunston 1972:The formula has acceptable calculation accuracy when W < 0.8a и t < 0.3b

 This calculation (as well as the calculation of many other microwave-lines) is implemented in our Android application “Characteristic impedance”, which you can download by clicking or scanning the QR code below.characreristic impedance

References:

  • M.A.R. Gunston, "Microwave transmission-line impedance data", VAN NOSTRAND REINHOLD COMPANY LTD, 1972, pp21…36.
 
 
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