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  Topic: impact of tuning an antenna on its original surface current
raphael_spacecode

Replies: 2
Views: 7769

PostForum: Questions Related to Antenna Theory   Posted: Wed Nov 04, 2015 3:54 pm   Subject: impact of tuning an antenna on its original surface current
Thank you very much for your reply. It is very interesting, especially the concept of integrating the E and H fields.
My (very) basic explanation was:
since I am using an ideal voltage source, tunin ...
  Topic: impact of tuning an antenna on its original surface current
raphael_spacecode

Replies: 2
Views: 7769

PostForum: Questions Related to Antenna Theory   Posted: Thu Oct 29, 2015 5:03 pm   Subject: impact of tuning an antenna on its original surface current
Hello
I have simulated an antenna and get its J surface current and H near field.
Since this antenna is really unmatched w.r.t a 50 ohms cable, I have used afterwards a LC tuning circuit. It is now ...
  Topic: general procedure to design a 50ohms input impedance antenna
raphael_spacecode

Replies: 3
Views: 9399

PostForum: Questions Related to Antenna Theory   Posted: Thu Oct 15, 2015 10:00 am   Subject: general procedure to design a 50ohms input impedance antenna
Thank you very much for your reply. I am going to study it carefully.
Bye
  Topic: general procedure to design a 50ohms input impedance antenna
raphael_spacecode

Replies: 3
Views: 9399

PostForum: Questions Related to Antenna Theory   Posted: Wed Oct 14, 2015 6:11 am   Subject: general procedure to design a 50ohms input impedance antenna
Hello
Is there somebody please to give me an answer?
Thanks

Regards
  Topic: general procedure to design a 50ohms input impedance antenna
raphael_spacecode

Replies: 3
Views: 9399

PostForum: Questions Related to Antenna Theory   Posted: Mon Oct 12, 2015 3:28 pm   Subject: general procedure to design a 50ohms input impedance antenna
Hello
I have a question:
Assuming we are trying to design an antenna that should be working at a particular frequency F0 with a 50ohms generator.

Is it better to:

1/ design such antenna with ...
  Topic: UHF Near field antenna
raphael_spacecode

Replies: 1
Views: 8126

PostForum: Questions Related to Antenna Theory   Posted: Wed Sep 30, 2015 3:15 pm   Subject: UHF Near field antenna
Hello
I have heard about the concept of UHF near field antenna. I don't know what this clearly means. I was thinking basically that its far field component decays rapidly. However under the far field ...
 
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