Log in
Register
Menu
Log in
Register
Home
What's new
Latest activity
Authors
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
General Topics
Pictures of Members' Setups and general satellite
Lutenna - The antenna made of Sugar
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="ldc" data-source="post: 624131" data-attributes="member: 254471"><p>That would depend on how large the focalpoint is so i think a basic horn-antenna (<a href="http://en.wikipedia.org/wiki/Horn_antenna" target="_blank">http://en.wikipedia.org/wiki/Horn_antenna</a>) should suffice for the test..</p><p></p><p>About the focal-point... Think of it this way. When having center at DC 1.0 and outer layer at 2.0. When the radiowaves gets reflected at the outer-layer of the sphere it will bend correctly to get to a good focal-point, but when it goes closer to the center it will weer off a bit more than wanted and with a simple feedhorn you could try and get a bit more signal into the LNB.</p><p></p><p>A non-tuned feed-horn will probably not do much with this, but it would be nice to see if my theory about this is correct and in that case try and make a tuned feedhorn for it, but this is probably gonna increase the noice-levels. Might not be good for weaker signals out there but it could possibly help to have a larger sphere to compensate when raining or snowing.</p></blockquote><p></p>
[QUOTE="ldc, post: 624131, member: 254471"] That would depend on how large the focalpoint is so i think a basic horn-antenna ([url]http://en.wikipedia.org/wiki/Horn_antenna[/url]) should suffice for the test.. About the focal-point... Think of it this way. When having center at DC 1.0 and outer layer at 2.0. When the radiowaves gets reflected at the outer-layer of the sphere it will bend correctly to get to a good focal-point, but when it goes closer to the center it will weer off a bit more than wanted and with a simple feedhorn you could try and get a bit more signal into the LNB. A non-tuned feed-horn will probably not do much with this, but it would be nice to see if my theory about this is correct and in that case try and make a tuned feedhorn for it, but this is probably gonna increase the noice-levels. Might not be good for weaker signals out there but it could possibly help to have a larger sphere to compensate when raining or snowing. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
General Topics
Pictures of Members' Setups and general satellite
Lutenna - The antenna made of Sugar
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top