Filar antenna element devices and methods

A filar antenna comprising:

• a feeding network on a circuit board comprising a ground plane and a combining network with a plurality of feed points;
• and
• a filar antenna with an equal plurality of filar nodes, wherein
• said combining network comprised of circuit elements effective to constructively sum microwave electrical signals present at each of said feed points, each of said electrical signals having a predetermined relative phase relationship, each of said feed points connected to a matching circuit consisting of a capacitive series reactance, each of said series reactances connecting one of said feed points to a corresponding one of said filar nodes, effective to present a characteristic impedance at each of said feed points;
• said filar antenna comprising a plurality of first filar elements and a plurality of second filar elements alternately arranged about a circumference and above the circuit board, wherein the plurality of first filar elements each have a first electrical length and the plurality of second filar elements each have a second electrical length, different from the first length, wherein the first electrical length of each of the plurality of first filar elements is established in dependence upon an odd multiple of a quarter wavelength of a first operating frequency and wherein the second electrical length of each of the plurality of second filar elements is established in dependence upon an odd multiple of a quarter wavelength of a second operating frequency, wherein each of the plurality of first filar elements includes a first end and an open, distal second end, and wherein each of the plurality of second filar elements includes a first end and an open, distal second end, said first ends of first filar elements constitutes one of said filar nodes, each of said filar nodes further coupled to a corresponding one of said first ends of said second filar elements.