Re: Radiation resistance and gain of ferrite antenna
Example of a mismatch with 8MHz: note the Q and radiation resistance. Q goes up!
Antenna efficiency: 33% (-4.9 dB below 100%)
Antenna bandwidth: 17.0 kHz
Tuning Capacitance: 121 pF
Capacitor voltage: 880 volts RMS
Resonant circulating current: 5.35 A
Radiation resistance: 0.057 ohms
Loss Resistance: 0.117 ohms
Inductance: 3.27 microhenrys
Inductive Reactance: 164 ohms
Quality Factor (Q): 471
Distributed capacity: 13 pF
Antenna "circumference": 5 meters
Suppose reciprocity applies to this calculator for receivers, i shall be tempted to make one for SW radios
Last edited by regenfreak; 25th Feb 2021 at 10:43 pm.
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