Wilkinson without 3db loss

[anum_pirkani]

I have got an assignment to design a splitter without a 3db loss. I have managed to design it, but i am not able to understand why there is no 3db loss in the design.
Please help me out.

i have attached the design and results.

 

[FvM]

The schematic shows a switch not a splitter. Please clarify the question.

A splitter has >= 3 dB loss by conservation of energy law. An (ideal) switch would cut one port and pass all energy to the other.

 

[anum_pirkani]

yeah, its a switch.
pin diodes allow the signal to pass in forward bias direction and blocks the signal in reverse bias direction (i guess)
but i am unable to understand the complete operation of the design.

 

[FvM]

IIt's a standard reflective pin-diode switch topology. Consider that the three line stubs starting at each pin diode (50 ohm signal at cathode, high impedance bias and low impedance short at anode) have λ/4 length and are transforming open to short and vice versa, then you'll surely work out the operation principle.