How to match 190 +j140 to a 50 ohm source?
 

How to match 190 +j140 to a 50 ohm source?
 

Dear Richard: He is a senior EE student at Michigan State University. I
sent him an E-mail message offering to assist.

73, Mac N8TT

--
J. McLaughlin; Michigan, USA
Home:
"Richard Clark" wrote in message
...
On Sun, 9 Dec 2007 21:27:20 -0500, "J. Mc Laughlin"
wrote:

Dear Richard and "s.g.hatch"

I am late to this thread. Apparently s.g.hatch is in Michigan, though I
did
not catch a hint of his location.

What references about Helix antennas have been studied? Prof. Kraus' book
Antennas (third edition) will be in any technical library and the subject
is
dealt with there. Google is also your friend.

If I receive an E-mail with contact information, I will try to help
s.g.hatch. 73, Mac N8TT
--
J. McLaughlin; Michigan, USA

Hi Mac,

I read the headers in posts (they are typically hidden to the casual
reader). I can also cross reference the IP address in that header to
a City and State. Our student's location is some 60 miles south of
where you sometimes post. Let's call it a SWAG that he is attending
the University where you are. ;-)

I cannot say that I have been a complete or reliable source, but we've
managed to cover some of the fundamental concerns and it didn't seem
appropriate to finish his semester project for him.

73's
Richard Clark, KB7QHC

How to match 190 +j140 to a 50 ohm source?
 

Hey;

We were able to get the input impedance of the antenna down to 45 +
j15, which means an SWR of 1.6. Not too bad I think.

We used one of these http://www.cebik.com/trans/ser.html with a Z02 of
125 ohms.

Thanks everyone for your help, I'm sorry I didn't have time to
implement any of your much cooler suggestions!

Sean