X3C06A4-03S Datasheet, PDF (24/25 Pages) Anaren Microwave – Very Low Loss

Model X3C06A4-03S
Rev A
Variable Phase Shifter Circuit Utilizing a 3dB Coupler
4
Input
1
Vdc
Output
2
3
* |Γ (0.5V 2 -90 + 0.5V 2 -90)| =| Γ|
Γ× 0.707V 
0.707V (-3dB)
Varactor Diodes
0.707V  -90 (-3dB)
Γ× 0.707V  -90
* The phase angle of the signal exiting port 2 will vary with the phase angle of Γ, which is the reflection
angle from the varactor. The varactors must be matched so that their reflection coefficients are equal.
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