Patent ID: 9584191
Date: 2017-02-28
CPC Classifications: H01Q,H03F,H03H,H04B

Claim:
1. An apparatus for tuning an electrically short, navigational beacon antenna adapted for use with a radio transmitter and an electrical ground, the apparatus comprising: an impedance matching network comprising: a first end configured to be in electrical communication with the radio transmitter, the radio transmitter generating a medium or high power signal between 190 kHz and 1800 kHz with a wavelength about ten times or greater than a longest dimension of the electrically short, navigational beacon antenna; a second end configured to be in electrical communication with the electrically short, navigational beacon antenna; a first impedance element electrically connected between the first end and the second end; and a second impedance element electrically connected between the first end and the electrical ground; wherein each of the impedance elements comprises an air core variable inductor and wherein each of the impedance elements only comprise non-capacitive circuit components.