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45 lines (29 loc) · 1.35 KB

Summary

Location

Latitude Longitude Elevation (m)
10-m 45.9555431 -78.0701136 229
46-m 45.9554015 -78.0727995 245

Separation: 208 m.

Antenna gain

Gain on axis: 32 dB.

Gain off-axis: 5 dB or lower.

Tasks to do:

  • Improve the model adding the ground plane behind the feed.
  • Run the simulation with different feed misalignments.
  • Assembly light weight signal sources for calibration.

Detailed

Gain Details

The peak gain on-axis is 32 dB moving off-axis, gain falls to 5 dB or lower at 20 deg.

E and H gain slices

Calibration signal source Details

If hanging something to the 46-m antenna doesn't work, we can get a small drone with ~150 grams of payload. I can think on two fast solutions a small signal generator with an Arduino to switch the frequency every few seconds automatically and a known white source.

  • Signal generator + control Arduino: 26 grams.
  • Noise source + up converter: 43 grams Several parts can be cut to make it lighter.
  • Supply: ~100 grams if going for the easy solution (AA batteries).

Using a small signal source allows to use small drones below the 250 grams limit to registering a drone.