Two identical antennas are placed in the = p/2 plane as shown in the figure. The elements have equal amplitude excitation with 180 polarity difference, operating of the far-zone resultant electric field strength normalized with that of a single element, both computed for = 0, is

• A. <img src="/_files/images/electronics-and-communication-engineering/electromagnetic-field-theory/203-414-2.png">
• B. <img src="/_files/images/electronics-and-communication-engineering/electromagnetic-field-theory/203-414-3.png">
• C. <img src="/_files/images/electronics-and-communication-engineering/electromagnetic-field-theory/203-414-4.png">
• D. <img src="/_files/images/electronics-and-communication-engineering/electromagnetic-field-theory/203-414-5.png">