Determine the length of the dipole, Other Management


(a) A uniform linear array consists of 20 vertical dipoles, each spaced by half a wavelength in the horizontal plane.

(i) If all array elements are fed in phase, what is the direction of the main beam and what is the (maximum) electric field strength in this direction compared with that of a single antenna?

(ii) What phase difference should be introduced between adjacent dipoles to produce:

[1] an endfire array?
[2] a main beam maximum at 10 degrees to broadside?
[3] a main beam maximum at 70 degrees to broadside?

(iii) If for the endfire configuration, the frequency of the received signal is increased by 10% without changing the physical distance or the phase difference between adjacent dipoles, by what angle will the direction of the main beam be deviated?

(b) An electric field strength of 10 µV/m is to be measured at an observation point θ = π/2, 500 km away from a half wave dipole, operating in air at 50 MHz.

(i) Determine the length of the dipole.
(ii) Evaluate the current that must be fed to the antenna.
(iii) Determine the average power radiated by the antenna.

Posted Date: 11/20/2013 12:19:10 AM | Location : United States

Related Discussions:- Determine the length of the dipole, Assignment Help, Ask Question on Determine the length of the dipole, Get Answer, Expert's Help, Determine the length of the dipole Discussions

Write discussion on Determine the length of the dipole
Your posts are moderated
Related Questions
Question 1 Explain the opportunities and challenges in healthcare HRM Question 2 Discuss employee grievance systems in healthcare Question 3 Transactional analysis

QUESTION 1 Describe the individual and situational factors leading to ethical decision making in the workplace QUESTION 2 What are the challenges for firms attempting t

Publishers' Casings and Paperbacks  It is a light straw-board cover, over which an attractive coloured cloth is glued. This casing is attached to the book itself by narrow tap

Covering Materials: Leather: Leather was the primary covering material for books until the third decade of the last century. It is only later that the commercial publishers

QUESTION a) Define cost benefit analysis as used to appraise large public sector investments b) Compare and contrast cost benefit analysis with investment appraisal c) Ex

Question 1 Suppose you are the CEO of MS Bank Corporation. Your bank is facing interest rate risk which has affected its operation significantly. Explain the factors that influenc

Question 1: Show the importance of facilities planning and design with regards to: (i) Land (ii) Esthetics (iii) Space (iv) Buildings (v) Innovation (vi) Acces

Acquisition Sources: As mentioned earlier, supply is another basic factor. Supply means availability of periodicals / serials for acquisition. Information regarding supply can

#questIf you were one of the other foremen, what could you do to make Rajinder’s transition easierion..

QUESTION 1 Apply Porter's Five Forces Model to UTM explaining how it can be used by the University to assess the attractiveness of the Tertiary Education Sector QUESTION 2