The principle plane pattern of the E-plane of rectangular aperture of a×b is given by F(θ) = ______(a) \(\frac{sin⁡(0.5kbsin\theta)}{0.5kbsin\theta}\)(b) \(\frac{cos⁡(0.5kbcos\theta)}{0.5kbsin\theta}\)(c) \(\frac{sec⁡(0.5kbsin\theta)}{0.5kbsin\theta}\)(d) \(\frac{1-sin⁡(0.5kbsin\theta)}{0.5kbsin\theta}\)I had been asked this question in exam.I need to ask this question from Radiation from Rectangular Aperture in division Aperture Antenna of Antennas

The principle plane pattern of the E-plane of rectangular aperture of

1.	The principle plane pattern of the E-plane of rectangular aperture of a×b is given by F(θ) = ______(a) \(\frac{sin⁡(0.5kbsin\theta)}{0.5kbsin\theta}\)(b) \(\frac{cos⁡(0.5kbcos\theta)}{0.5kbsin\theta}\)(c) \(\frac{sec⁡(0.5kbsin\theta)}{0.5kbsin\theta}\)(d) \(\frac{1-sin⁡(0.5kbsin\theta)}{0.5kbsin\theta}\)I had been asked this question in exam.I need to ask this question from Radiation from Rectangular Aperture in division Aperture Antenna of Antennas
Answer» Correct choice is (a) \(\FRAC{sin⁡(0.5kbsin\theta)}{0.5kbsin\theta}\) Explanation: The principle plane PATTERNS for the uniform rectangular APERTURE antenna is given by F(θ) = \(\frac{sin⁡(0.5kbsin\theta)}{0.5kbsin\theta}\) and main LOBE occurs when θ =0.

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