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electrically short造句

例句與造句

  1. Electrically short antenna systems have relatively small apertures and high losses.
  2. Electrically short monopole antennas have low resistance and high reactance.
  3. The electromagnetic field in the near-field region of an electrically short rod antenna is predominantly electric.
  4. Since the transverse dimension of the array is electrically short, the structure is backed by a long metallic trough.
  5. So to make an electrically short antenna resonant, an inductor called a loading coil is inserted in series with the antenna.
  6. It's difficult to find electrically short in a sentence. 用electrically short造句挺難的
  7. An antenna which is shorter than its resonant length is described as " " electrically short " ", and exhibits capacitive reactance.
  8. Using a folded unipole will increase the bandwidth of electrically short antennas because its feed-point comprises less reactance that needs to be tuned out.
  9. The experimental results demonstrated focusing of an incident cylindrical wave within an octave bandwidth and over an electrically short area; suggestive of near-field focusing.
  10. Electrically short antennas like the rubber ducky are used in portable handheld radio equipment at scanners and other devices where safety and robustness take precedence over antenna capabilities.
  11. Because of the large wavelength of the radio waves, feasible antennas used at these frequencies are electrically short, their length is a small fraction of the wavelength.
  12. Lower power transmitters often use electrically short quarter wave monopoles such as inverted-L or T antennas, which are brought into resonance with a loading coil at their base.
  13. They are used as transmitting antennas below 1 MHz, in the electrically short antenna, and by itself would have very low radiation resistance and be a very inefficient radiator.
  14. Although like other electrically short antennas the rubber ducky has poorer performance ( less gain ) than a quarter-wave whip, it has somewhat better performance than an equal length base loaded antenna.
  15. A major practical drawback to this band is that because of the length of the waves, full size resonant antennas ( half wave dipole or electrically short, a small fraction of a wavelength long.
  16. The power radiated ( or received ) by an electrically short vertical antenna like the T is proportional to the square of the " effective height " of the antenna, so the antenna should be made as high as possible.
  17. 更多例句:  下一頁

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