coupled line coupler

I have to design an X band microstrip directional coupler at 10GHz with coupling of -20 dB and substrate is GML-1000 with substrate of thickness 1.524mm. I have a time limit of 2 weeks.PLEASE HELP ME....

Hello Saifullah,

Use AWR Microwave Office (MWO) tool to build the coupler Circuit Schematic
as shown in the Circuit Schematic PDF document (Microstrip Substrate GML 1000, MCLIN are used )
Width = 3.469mm, Gap = 1.321mm, Length = 6.029 mm

Then for frequency range 8 GHz to 12 GHz,
circuit optimizations are used to meet the following objectives:
S11 < -36 dB
S31 < -20 dB
S41 ≈ -15 dB
MWO automatically generates layout for Microstrip Coupled line Coupler ...
Use inbuilt EM Simulator to finally verify the design accurately...



---manju---