Application of Network Synthesis to Broadbanding of Low-Frequency Antennas

Being quite narrow, the bandwidth of low-frequency transmitting antennas is often insufficient for modern communication requirements. Some physical reconstruction of the existing antenna, or damping of the output circuit may be used for broadbanding. In this paper, a method of synthesis for broadbanding coupling networks is shown, together with curves relating the Chebyshev and Butterworth types of responses to the network. An illustrative example is given for use with a solid-state transmitter with a very low output impedance.