Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Receiver Antenna for 400~700nm wave

Receiver Antenna for 400~700nm wave

Receiver Antenna for 400~700nm wave

What size of antenna is ideal for a wave spectrum on the above wave lenght?

RE: Receiver Antenna for 400~700nm wave

The wavelength regime stipulated is visible light, so that would be an optics problem.

Is this for school? Student posting is not allowed.

FAQ731-376: Eng-Tips.com Forum Policies
[IMG http://tinyurl.com/7ofakss]
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers

Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
There is a homework forum hosted by engineering.com: http://www.engineering.com/AskForum/aff/32.aspx

RE: Receiver Antenna for 400~700nm wave

200~350nm, half-wave dipoles.

The day will eventually come when nanotechnology will bring the optical range into the RF world. It should be very interesting when it happens.

RE: Receiver Antenna for 400~700nm wave


That was fast. winky smile

RE: Receiver Antenna for 400~700nm wave

Nantennas are being worked on for direct conversion of light into electricity in lue of photovoltaic methods.

An issue which is being conquered is the complex interaction of light with ANY metal surface causing (plasmons) a sort-of plasma cloud which makes direct scaling of radio antenna theory not possible, but they're getting a handle on it. It's similiar to skin depth stuff which doesn't greatly impact RF antennas but does cause strange effects with regards to nano length optical antennas.

Here's a link to short paper on the subject:
antennas for light

Here's a paper. Look at page 444 for some cool optical antennas.(Don't worry its only a 37 page doc not hundreds of pages)
Page 444

Here's a link to lots of stuff at Rochester Univ:
Search of Rochester's data base

Keith Cress
kcress - http://www.flaminsystems.com

RE: Receiver Antenna for 400~700nm wave

I knew it was at the research stage. Of course, 'research stage' is a very long time frame, often spanning decades.

You've provided some excellent references for the OP, if the question was actually intended as written.

RE: Receiver Antenna for 400~700nm wave

Wow, I appreciate a great resource you got there. Thank you.
I am looking a possibility,how I could relate the effects to fractal solar panel at iteration where dimensions nearing to or smaller than wavelength. What parameters could have been affected on the energy conversion of light to hv. Fortunately, I have now a supporting references for my hypothesis, thanks to you very much.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close