hi to all,

Can anyone help me to the VSWR of
1 at 2.4GHz. the parameter is as following:

N=3

raduis of wire =0.3mm

diamter of helix coil =3mm

pitch angle =37degree

h=2mm

right handed helix

2.4GHZ

I attached my file here for ur reference.

** Mesh parameters and points

** d = lamda/4
or 0.125m/4= 0.03125

** N = 3 turns

** S =
0.00710207960366(Base on pitch angle =37 degree)

** r = 0.0003m or 0.3mm

** D = 0.003m or 3mm

** h = 0.002m or 2mm

** Max wire segment length
= 0.05m or 50mm

** Max Segment Length = 0.0019m
(20 segments in 1 coil)

** All values in m

************************************************************************

**********************

** Tuning Parameter

**********************

** #d is the lambda or
distance between the 2 helical antenna

** #r
is the radius of the helical wire

** #seg is
the number of segments on the helix coil

** #s
is the spacing between coil turn

** #c is the
diameter of the helix coil

** #d = 0.0

** #r = 0.0003

** #seg = 0.002

** #z
= 0.0079

** #c = 0.0023

** Wire
segment length h

#h1 = 1.0

#h2 = 1.0

#d = 0.0 **Lambda Distance

#e = 0.0 **X coordinate

#r = 0.3 **Helix Radius

#seg = 2.0 **Helix
Segment

#s = 7.1 **Turn Spacing

#c = 3.0 **Helix
Circumference

************************************************************************

** Frequency

#freq = 2.4e9

** Parameters
for segmentation

IP #r 50

************************************************************************

** Left Side

** Parameters for helix segmentation

LA 1

DP A1 #e -#d #h1

DP B1 #e -#d #s

DP
C1 #c -#d #h1

** Right handed helix (1)

HE A1 B1 C1 1 3 #seg

** Define the endpoints
and create the wire segment h

DP D1 #c -#d #h2

DP E1 #c -#d 0

LA 2

BL E1 D1

**********************************************************************

** ** Right Side

**

** ** Parameters
for helix segmentation

** LA 4

** DP A2
#e #d #h2

** DP B2 #e #d #s

** DP C2 #c #d
#h2

** Right handed helix (2)

** HE
A2 B2 C2 1 3.0 #seg

** Define the endpoints
and create the wire segment h

** DP D2 #c #d
#h1

** DP E2 #c #d 0

** LA 5

**
BL E2 D2

***********************************************************************

SF 1 0.001

** End of geometric input

EG
1 0 0 0 0

** Specify an infinite ground
plane

** BO 2

**Set Discrete Frequency
2GHz-3GHz

FR 10 0 0.51e9 2.6e9

**
Voltage gap excitation at a segment

** A2 0 2
1 90 50

A1 0 2 1 90 50

** A2 1 5 1 90

** Calculate surface currents for current display

OS 1 1

** Horizontal far field pattern

FF 1 1 181 1 90 0 2

** End

EN