Determine the length of the dipole, Other Management

Question:

(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
Requirements of shopping  Let us now look at the requirements for shopping:  The value of the work or goods should be of a lesser value and the nature of business should

QUESTION 1 Describe and evaluate Cabinet Government under the mauritian system QUESTION 2 Explain and assess the Prime Minister's prerogative over the dissolution of Pa

assignment on stock market for 10 marks basis

Problem 1 Many surveys have been carried out over recent years to try to evaluate why customers are lost. While the answers may vary by customer and organisation, survey after

CASE STUDY - CORPORATE LEVEL STRATEGY Why would Procter and Gamble (P&G), a company with 300 brands, five billion customers in 140 countries, and more food and beverage paten

Question 1: Explain in detail how you would set up an effective and efficient control system for a newly opened hotel. Question 2: Discuss the various stages of the foo

Question 1: Clearly explain and illustrate the major characteristics of an industrial accident Question 2: Describe the various ergonomic risk factors that might affect

1.  Straight Flow Line: The shortest  distance between two given  points  is the straight line.  This  line  provides a guideline for the path  to follow. 2.   Standardizatio

Resource Sharing Library Network Resource sharing is the focal point of library networking and cooperation. The tested technological advances in this field have tremendously i

QUESTION 1 Identify and explain the six concepts/components that are necessary for an effective TQM program. How are these related to Deming's 14 points? QUESTION 2 By