bibijons
Junior Member level 3
i designed a hybrid on RO4003. now i want to get the l/λ.
description of the hybrid:sma(9mm), microstripline(15.6mm), hybrid by Anaren(1.3-2.6GHz), stripline(15.6mm), sma(9mm)
on a NWA i connected the total construction and i measured for a phaseshifting 0°
1GHz -146°
1.5GHz -78°
2GHz -8°
2.5GHz +59°
these values i put in the smithchart and got my l/λ
to get the l/λ of my stripline i used the formula Φ=β*l after i got the phase i went in the smith chart and got the l/λ
and finally i need the l/λ for the sma connector, i know εr=1.5, l=9mm
i need a formula for that, am i right that the sma is frequency dependent?
i need this, because my next design includes a resistive splitter. on channel A i put the splitter on channel B the hybrid. and for calibraion it is important to know the length of both so they compensate to zero. if i know the l/λ of the hybrid i'm sure i can calculate the length of my splitter.
design of spliiter: 50Ω microstripline the divides in 2 parts, both have a resistor (SMD) of 50Ω
hope my description was not to bad.
thanks for help
description of the hybrid:sma(9mm), microstripline(15.6mm), hybrid by Anaren(1.3-2.6GHz), stripline(15.6mm), sma(9mm)
on a NWA i connected the total construction and i measured for a phaseshifting 0°
1GHz -146°
1.5GHz -78°
2GHz -8°
2.5GHz +59°
these values i put in the smithchart and got my l/λ
to get the l/λ of my stripline i used the formula Φ=β*l after i got the phase i went in the smith chart and got the l/λ
and finally i need the l/λ for the sma connector, i know εr=1.5, l=9mm
i need a formula for that, am i right that the sma is frequency dependent?
i need this, because my next design includes a resistive splitter. on channel A i put the splitter on channel B the hybrid. and for calibraion it is important to know the length of both so they compensate to zero. if i know the l/λ of the hybrid i'm sure i can calculate the length of my splitter.
design of spliiter: 50Ω microstripline the divides in 2 parts, both have a resistor (SMD) of 50Ω
hope my description was not to bad.
thanks for help