rhombic antenna

Where i can find the original paper about rhombic antenna? I want to know how to analyze a wire antenna?thanks!

This is a very old antenna type. It is described in the older antenna books like by Kraus. There is a Bell Labs book from 50 years ago on them. Most wire antenna NEC type analysis programs will work.

See this web page containing descriptions, design guides, Rhombic Antenna Design Software, etc:

http://www.mindspring.com/~cummings7/rhombic.html