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The Crossed Field Antenna

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Posted by Richard Ruquist on March 9, 2003 15:17:41 UTC

Bibhas R. De, a PhD from the University of California, San Diego, has developed a Companion Wave EM theory, and published it. He claims that different sources of EM radiation can interact if the beams cross. That presented a great obstacle in trying to publish his work. It is fundamentally different from the conventional view in physics that photons, or any other boson cannot interact unless they have phase coherence. That is where it laid until Dr. De heard about the CFA- Crossed Field Antenna.

In the CFA a periodic magnetic field and a periodic electric field are generated separately but such that they occupy the same space. The simplest configuration to realize this is a barrel over a ground plane. But several more exotic configurations are used in practice.

The best explanation is given in the link:

The extreme advantage of this antenna is that it is about 1/50 the size of ordinary antennas with considerably more bandwidth.

I wish I had thought of this as my PhD thesis is on a wide bandwidth Navy satellite antenna. I just designed a dipole antenna that would not reflect the fluctuating current from its end, thereby making it radiate uniformly over a wide bandwidth.

So I can report that the CFA is the real thing.

But not the companion wave.

The CFA requires phase coherence. The companion wave theory claims interaction in the absence of phase coherence.

We certainly know that two separate beams of photons interact if they have phase coherence for that is the basis of the double slit experiments. With phase coherence the separate beams interact and form an interference pttern. Without phase coherence, the two beams each have a separate peak on the detector screen.


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