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3.4 A DBS-TV receiving antenna has a circular aperture with a diameter of 0.6 m and operates at a center frequency of 12.2 GHz. The antenna has an aperture efficiency of 70%. a. Calculate the wavelength at 12.2 GHz. b. Calculate the gain of the antenna in decibels using the most accurate formula. c. Estimate the beamwidth of the antenna in degrees.

3.4 A DBS-TV receiving antenna has a circular aperture with a diameter of 0.6 m and operates at a center frequency of 12.2 GHz. The antenna has an aperture efficiency of 70%. a. Calculate the wavelength at 12.2 GHz. b. Calculate the gain of the antenna in decibels using the most accurate formula. c. Estimate the beamwidth of the antenna in degrees.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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3.4 A DBS-TV receiving antenna has a circular aperture with a diameter of 0.6 m and operates at a center frequency of 12.2 GHz. The antenna has an aperture efficiency of 70%. a. Calculate the wavelength at 12.2 GHz. b. Calculate the gain of the antenna in decibels using the most accurate formula. c. Estimate the beamwidth of the antenna in degrees. d. Estimate the gain of the antenna in decibels using an approximation based on the beamwidth you found in part (c). If this figure does not agree with your result in part (b) explain why.
Transcribed Image Text:3.4 A DBS-TV receiving antenna has a circular aperture with a diameter of 0.6 m and operates at a center frequency of 12.2 GHz. The antenna has an aperture efficiency of 70%. a. Calculate the wavelength at 12.2 GHz. b. Calculate the gain of the antenna in decibels using the most accurate formula. c. Estimate the beamwidth of the antenna in degrees. d. Estimate the gain of the antenna in decibels using an approximation based on the beamwidth you found in part (c). If this figure does not agree with your result in part (b) explain why.
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