The hpbw is found by equating sin 2 θ with 12

• Notes
• cornell2000
• 49

This preview shows pages 31–33. Sign up to view the full content.

The HPBW is found by equating sin 2 θ with 1/2, yielding θ = 45 , 135 . The difference between these limits is the HPBW, which is exactly 90 in this case. Note the importance of correct normalization in this calculation. Discussing the HPBW in the H-plane is not meaningful for a dipole. Since the radiation pattern has nulls at θ = 0 and 180 , the BWFN is 180 . Normally, the BWFN is nearly but not exactly twice the HPBW. Note that there is no radiation off the ends of a dipole. 2.1.4 Total radiated power We calculate the total power radiated by the antenna by integrating the Poynting flux over any closed surface surround- ing the antenna (a sphere or arbitrary radius being the natural choice). The computation frequently necessitates either integral tables and variable transformations or numerical computation. The present case is elementary, however. P total = contintegraldisplay s P r dS 30

This preview has intentionally blurred sections. Sign up to view the full version.

This is the end of the preview. Sign up to access the rest of the document.
• Spring '13
• HYSELL
• The Land, power density, Solid angle

{[ snackBarMessage ]}

What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern