Double Ridge Guide Horn Antenna

hi every one..

i need to design an horn antenna with the following specifications using hfss . i am a begginer in antenna design . please help me how to go about . i am stuck with lots of errors .

specifications :
Frequency Range: 700 MHz - 18 GHz
Antenna Factor: 22 to 44 dB
Gain (dBi): 1.4 to 15 dBi
Maximum Continuous Power: 300 Watts
Max Radiated Field: 200 V/m
Pattern Type: directional
3dB Beamwidth (E-Field): 48°
3dB Beamwidth (H-Field): 30°
Impedance: 50 W
VSWR: 1.6:1 (3.5:1 max)
Connector: N-Type, female
Mounting Base: ? - 20 Thread, female
Physical Dimensions:
Length: 11.0 in. (27.9 cm)
Width: 5.6 in. (14.2 cm)
Height: 9.6 in. (24.4 cm)
Weight: 3.5 lb.'s (1.59 kg)

Aperture: 5.5" x 9.6" (13.9cm x 24.4cm)

i hav not done corrugations (since i dont know how to do it).pls do the help...thank u

hi
I have worked with this software 5 years ago and I cant guide you clearly but I remember this software have a powerful help so I can just advice that read help

hfss help is not so help full for me ..anyways thank u

hi, i need to design the rectangular horn antenna in HFFS software. Please can you assist how to start with the HFFS.

i dont think so i can be much helpfull bcoz i started learning hfss just now ...try design those examples in manual at the start ..it will help u much i guess ..

can anybody send me the website to download the CST 2006 software.