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14.20 A two-element dipole array is configured to provide zero radiation in the hroadside (- 90) and endfire (= 0, 180") directions, but with maxima occurring at angles in between. Consider such a setup with ya at 0 and y -3a at d, with both values determined in the H plane (a) Verify that these values give zero broadside and endfire radiation. (b) Determine the required relative current phase,. (c) Determine the required element spacing, d. (d) Determine the values of at which maxima in the radiation pattern occur.

14.20 A two-element dipole array is configured to provide zero radiation in the hroadside (- 90) and endfire (= 0, 180") directions, but with maxima occurring at angles in between. Consider such a setup with ya at 0 and y -3a at d, with both values determined in the H plane (a) Verify that these values give zero broadside and endfire radiation. (b) Determine the required relative current phase,. (c) Determine the required element spacing, d. (d) Determine the values of at which maxima in the radiation pattern occur.

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relative current phasing. . and the smallest element spacilg, a. 14.201 A two-element dipole array is configured to provide zero radiation in the broadside (=+ 90) and endfire ( = 0, 180") directions, but with maxima occurring at angles in between. Consider such a setup with w = at 0 and w m -3a at d=x, with boch values determined in the H plane. (a) Verify that these values give zero broadside and endfire radiation. (b) Determine the required relative current phase, . (c) Determine the required element spacing, d. (d) Detenmine the values of at which maxima in the radiation pattern occur. 14.21i In the two-element endfire array of Example 14,4, consider the effect ting firmucncy ( way from the original design
Transcribed Image Text:relative current phasing. . and the smallest element spacilg, a. 14.201 A two-element dipole array is configured to provide zero radiation in the broadside (=+ 90) and endfire ( = 0, 180") directions, but with maxima occurring at angles in between. Consider such a setup with w = at 0 and w m -3a at d=x, with boch values determined in the H plane. (a) Verify that these values give zero broadside and endfire radiation. (b) Determine the required relative current phase, . (c) Determine the required element spacing, d. (d) Detenmine the values of at which maxima in the radiation pattern occur. 14.21i In the two-element endfire array of Example 14,4, consider the effect ting firmucncy ( way from the original design
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