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Вопрос 392

Which of the following is an advantage of a log-periodic antenna?

  1. Wide bandwidthПравильный ответ
  2. Higher gain per element than a Yagi antenna
  3. Harmonic suppression
  4. Polarization diversity

Объяснение

In a log-periodic array successively scaled elements take over as the frequency changes, giving nearly constant gain, pattern and impedance across a wide frequency range. Its gain per element is lower than a Yagi's, not higher, since only a few elements are active at any one frequency.

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Вопрос 392: Which of the following is an advantage of a log-periodic… · FCC General Class (Element 3) · Questena