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
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

(a) Explain the term Public Relations (PR) as per the British Institute of PR and illustrate the relevance and interdependence of i. PR and marketing and ii. PR and adverti

TYPES OF CATALOGUE: You have learnt the definition, objectives and functions of a library catalogue and the physical forms in which it exists, with their distinguished feature

Cataloguing-in-Publication (CIP): Centralised cataloguing led to the logical step of publishing bibliographic entries of documents in the publication itself, on the reverse si

The Integrated Management Project is designed to: develop your capability to think and act strategically test your ability to apply the concepts taught and techniques le

Question 1 Explain the CRM technology components Question 2 Explain any five features of SFA Question 3 Explain the major components of Enterprise Marketing Automa

WHAT IS A RECORD FORMAT THAT DIVIDES THE RECORD INTO SECTIONS?

S ix-Sigma Speciality Six Sigma can be used for both operational and strategic management. It is regarded as a new quality management strategy that has the ability to replace

QUESTION 1 a. Describe the 4 identity statuses put forward by James Marcia b. Adolescence is often described as a period of storm and stress [Hall. 1904]. Evaluate this clai

QUESTION In project management, there are three primary variables: the amount of work to be done; the amount of time available (calendar time, not person-years); and the amount