Determine the length of the dipole, Other Management

Assignment Help:

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.


Related Discussions:- Determine the length of the dipole

Human resource management, is it a good process if the human resource manag...

is it a good process if the human resource management adapt the long selection process to recruit the employer

Question content - research tools, Question Content: The content of  q...

Question Content: The content of  questions will naturally be  guided by  the aims and needs  of  the researcher. Direct questioning is particularly useful for obtaining  info

Security issues in banking industry, a) Security issues are a major source...

a) Security issues are a major source of concern for everyone both inside and outside the banking industry. There are some security questions that need to be considered before dep

How can they affect the invoicing procedures, Question 1: You have just...

Question 1: You have just been appointed as Food & Beverage Controller of a major Food & Beverage operation within a medium-size hotel. Explain in detail the various areas you

Objectives of conference centre, Question 1: You have been hired as a c...

Question 1: You have been hired as a consultant for an event venue, and your task consist of advising the management on the requirements of the conference area which they plan

Consultative decision-making process, (a) Discuss and determine the follow...

(a) Discuss and determine the following statement: Emergent change does not provide a coherent alternative to Planned change but merely gives an umbrella for those who oppose it.

Discuss in relation to kurt lewin''s model of planned change, Question: ...

Question: (a) Change has become an inevitable feature of organisational life in today's competitive business world. Change can manifest itself in two forms. It can either simpl

promotional management, What is promotional Mix? Mention and explain the e...

What is promotional Mix? Mention and explain the elements of promotional mix?

Define creativity, Question 1 What are special events? Give example. Wh...

Question 1 What are special events? Give example. What is meant by vision statement? What are the components of a good vision statement? Question 2 Every bidding doc

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd