Which of the following is characteristic of...

Question 1 / 27070ci7eB0dJXkW4OknQEFhZ

Question 1 of 27070ci7eB0dJXkW4OknQEFhZ

Which of the following is characteristic of the parabolic dish antenna?

Question 1 of 27070

Which of the following is characteristic of the parabolic dish antenna?

🔍 Key Concepts

• Parabolic reflectors focus energy similar to a satellite TV dish or searchlight mirror • Relationship between the feedhorn and the focal point of a parabola • Typical frequency ranges and gain associated with parabolic dish antennas

💭 Think About

• How does a parabolic surface affect radio waves that strike it, and where do those reflected waves concentrate? • In a practical antenna, where must the feedhorn be positioned relative to the reflector to efficiently transmit or receive energy? • Do parabolic dish antennas usually have high or low gain, and are they typically used at HF (3–30 MHz) or at much higher frequencies?

✅ Before You Answer

• Be clear on what the focal point of a parabola is and how reflectors use it • Check which type of antenna is known for high gain and very narrow beams • Verify which frequency ranges commonly use dish antennas (think radar, satellite, microwave) rather than HF (3–30 MHz)

Question 1 of 27070

Which of the following is characteristic of the parabolic dish antenna?

Feedhorn located behind the parabolic reflector.

Feedhorn adjusted to the focal point of the antenna .

Most often used on high frequencies (3-30 MHz).

Low gain, highly directional radiation pattern.

Question 1 / 27070ci7eB0dJXkW4OknQEFhZ

Question 1 of 27070ci7eB0dJXkW4OknQEFhZ

Which of the following is characteristic of the parabolic dish antenna?

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Question 1 of 27070

Which of the following is characteristic of the parabolic dish antenna?