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HF Helical Antennas: Theory and Practice

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ANTENTOP- 01- 2020, # 024

HF Helical Antennas: Theory and Practice

 

 

Measurement of the Resonance Frequency of Helical Antenna with GDO

 

Figure 6 shows the method of measuring the resonance frequency of a dipole helical antenna. Figure 7 shows the method of measuring the resonance frequency of a vertical helical antenna.

The helical antenna was coupled with GDO with 1 to 3 turns (it was found best coupling by experiment) of stranded wire. Distance between the coil and the GDO coil was minimal for the GDO could fix the resonance frequency.

 

 

 

Figure 6 Method of Measuring the Resonance Frequency of a Dipole Helical Antenna

 

 

 

Figure 7 Method of Measuring the Resonance Frequency of a Vertical Helical Antenna

 

 

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May 27, 2020 9:24

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