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1 vote

Left and right circularly polarized antennas - which one to choose for reception-emission?

The antennas should be wound in the same direction, which is to say they have opposite polarization, since polarization of an antenna is defined according to what you see when looking down the ...
Digiproc's user avatar
  • 278
1 vote

How can I add an external antenna to a GooSKY S1 mini helicopter flight controller?

The people who designed the RF module will have done the best job they can within the constraints of the size and placement. Unless you know what you’re doing and have access to the right equipment, ...
Frog's user avatar
  • 7,855
3 votes

Can a microwave antenna detect single microwave photons?

An antenna doesn't detect anything: it delivers electromagnetic energy to a receiver. So your question really should be "can a microwave receiver detect single microwave photons". The answer ...
John Doty's user avatar
  • 4,987
10 votes

Can a microwave antenna detect single microwave photons?

No, the system cannot distinguish individual photons. A single photon at, say, 10 GHz has an energy of about 6.62607015×10−24 J. A barely-detectable radio signal has a power of about 1 femtowatt, or ...
Dave Tweed's user avatar
  • 178k
7 votes
Accepted

Can a microwave antenna detect single microwave photons?

No, microwave antennas cannot "detect" (and I'm using "detect" as a very loose euphemism... It's really "conversion"...) microwave photons because their energies are too ...
Colin's user avatar
  • 1,861
0 votes

GPS antenna not working

Chip antennas for GNSS are quite sensitive to various factors, including their placement, the length of the RF trace, and the size of the ground plane. Additionally, the positioning of the battery and ...
pablopeza's user avatar

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