Antenna - Theory .com: The Antenna Site

Antenna Basics Antenna Types Smith Charts Antenna Measurements

antenna-theory.com :: View topic - antenna directed at the ground creates a standing wave
antenna-theory.com Forum Index antenna-theory.com
Antenna Theory
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

antenna directed at the ground creates a standing wave

 
Post new topic   Reply to topic    antenna-theory.com Forum Index -> Questions Related to Antenna Theory
View previous topic :: View next topic  
Author Message
ioj@gmx.us
Antenna-Theory.com Newbie


Joined: 08 May 2015
Posts: 3

PostPosted: Fri May 08, 2015 1:24 am    Post subject: antenna directed at the ground creates a standing wave Reply with quote

does an powered antenna directed at the ground at the appropriate elevation creates a standing wave?
Back to top
View user's profile Send private message
hagster
Antenna Theory Regular


Joined: 09 May 2015
Posts: 27

PostPosted: Sat May 09, 2015 10:11 pm    Post subject: Reply with quote

it creates constructive and destructive interference in the air, so yes It does create standing waves. A bit like fading in multipath environments. It can also creates standing waves in the antenna feed, but the level of the reflected signal will normally be greatly reduced at any reasonable distance from the antenna.
Back to top
View user's profile Send private message
ioj@gmx.us
Antenna-Theory.com Newbie


Joined: 08 May 2015
Posts: 3

PostPosted: Sun May 10, 2015 5:51 am    Post subject: just as a very basic question, does a RF signal bounce or be Reply with quote

just as a very basic question, does a RF signal bounce or become absorbed by ground?
Back to top
View user's profile Send private message
hagster
Antenna Theory Regular


Joined: 09 May 2015
Posts: 27

PostPosted: Sun May 10, 2015 6:06 am    Post subject: Reply with quote

Both and more the exact amount dependent on the materials, wavelength and angle of incidence.
Back to top
View user's profile Send private message
ioj@gmx.us
Antenna-Theory.com Newbie


Joined: 08 May 2015
Posts: 3

PostPosted: Mon May 11, 2015 3:11 am    Post subject: Reply with quote

hello,
please tell me, with an antenna as complex as the antenna in the integratron what can you see with your expert eyes. it is 180 concentric "split ring resonators" (wire antennas) 90 in the horizontal plane and 90 in the vertical. it is powered by a 1MV tesla coil (ultra wide band RF transmitter). the attachment of the tesla coil is on the second last outer split ring. it looks to me like the most widest wideband RF generator ever made, what do you think? it is like a Yagi with 178 director elements and one reflector element. this is a link to the picture of it without the 90 vertical elements & without the tesla coil as you can see this is a yagi directed into the ground and so a standing wave and other anomalies would result https://farm8.static.flickr.com/7114/6902954002_9c38ae63e1_b.jpg
thank you,
gene
Back to top
View user's profile Send private message
helix
Antenna Theory Regular


Joined: 29 Jan 2015
Posts: 64

PostPosted: Tue May 12, 2015 2:12 pm    Post subject: Reply with quote

man, i bet that guys' wife is PISSED OFF for doing that to the living room!!
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    antenna-theory.com Forum Index -> Questions Related to Antenna Theory All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group