Diagram enclosed.
The phase shifting antenna in my thinking can help a pre phase shifted signal with I/Q components set up a phasing relationship on the antenna when excited by a quadrature transmitter. I and Q then should set up naturally on the antenna with their 90 degree relationship to each other. Why? Look at it this way, there is independent gain for I & Q. {+3bB per sinewave component: total summed e.r.p. = +6dB}
Uses on HF can be for shortwave broadcast where a single frequency is used.
Yet it can be used with a standard AM transmitter where the upper and lower antenna current sections should come together with the wave crest phased 90 degrees apart. The 1/4 wave 300 ohm twin lead section is a 90 degree phasing section so that the upper and lower radiators are 90 degrees apart in electrical length.
Ideas over time may improve it for pattern as well as gain. Most useful at 10 meters and above where the bandwidth is greater and antenna size is more manageble. I would recommend controlled carrier AM for allot of modulation amplitude change in dBs where one does not have a quadrature transmitter.
It appears to be useless in phasing a single side band transmission although it will serve as a antenna for ssb. As a receiving antenna it does have a pre phased relationship with respect to an incoming phase shifted signal but only acts as an antenna in phase with the signal and doesn't do anything for the the receiver mixing so it is one way, or out going. To increase the antenna gain just increase each 1/4 wave radiator to 1/2 wave long sections.
This is merely an idea for a test antenna to target a distant quadrature receiver with; where one does not have a quadrature transmitter.
From 11 through 10 meters and higher the antenna can become a phased beam antenna having a reflector and directors and aimed by a rotor.
So now to the list of stuff you can add a phase shifting antenna KA9RZA.
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