Question: Consider a linear endfire array, designed for maximum radiation intensity at = 0, using and d values as suggested in Example 14.5. Determine

Consider a linear endfire array, designed for maximum radiation intensity at ϕ = 0, using ξ and d values as suggested in Example 14.5. Determine an expression for the front-to-back ratio (defined in Problem 14.22) as a function of the number of elements, n, if n is an odd number.

Step by Step Solution

★★★★★

3.41 Rating (157 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

From Example 145 we use 2 and d 4 so that kd 2 Then in the Hplane kd c... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Principles Communications Systems Questions!

In a linear endfire array of n elements, a choice of current phasing that improves the directivity is given by the HansenWoodyard condition: where the plus or minus sign choices give maximum...

Ferroelectric linear array consider a line of atoms of Polarizability a and separation a. Show that the array can polarize spontaneously if a > a 3 /4n 3 , where the sum is over all positive integers...

In the two-element endfire array of Example 14.4, consider the effect of varying the operating frequency, f, away from the original design frequency, f 0 , while maintaining the original current...

Let A, B be sets. Define: (a) the Cartesian product (A B) (b) the set of relations R between A and B (c) the identity relation A on the set A [3 marks] Suppose S, T are relations between A and B, and...

413-432_CH18_Nachmias.qxd 1/17/07 3:47 PM Page 413 Chapter Index Construction and Scaling Methods INDEX CONSTRUCTION The Purpose of the Index The Sources of the Data The Base of Comparison Methods of...

I need to see the SPSS output. You need to have all z-scores, all charts, all descriptives data from SPSS, everything you used to answer the questions. I am sending you what the previous tutor sent...

Briefly describe ASCII and Unicode and draw attention to any relationship between them. [3 marks] (b) Briefly explain what a Reader is in the context of reading characters from data. [3 marks] A...

Portray in words what transforms you would have to make to your execution to some degree (a) to accomplish this and remark on the benefits and detriments of this thought.You are approached to compose...

re Regular Languages and Finite Automata (a) Let L be the set of all strings over the alphabet {a, b} that end in a and do not contain the substring bb. Describe a deterministic finite automaton...

Describe how to construct the function cpo ((D E), v) of two cpos (D, vD) and (E, vE). Prove that ((D E), v) is a cpo. (You may use facts about least upper bounds provided you state them clearly.)...

Use chest deceleration data for three different size categories (small, midsize, large). The data are from a standard crash test and they are listed in Data Set 13 in Appendix B. If we use the head...

Historically, replacing dirt roads with paved roads reduced friction on vehicles. Replacing paved roads with steel rails reduced friction further. What recent step eliminates rail friction of...

TCP Wrappers uses which of the following files to grant access to a client? q , / etc / hosts / etc / allow . hosts letc / hosts . deny letc / hosts . allow

5.6 Consider a generalization of the Strawderman (1971) hierarchical model of Problem 5.5: X| N( , I ), | N(0, 1 (1 )I ), (). (a) Show that the Bayes estimator against squared error loss is [1 ...

In a simplified version of the musculature action in leg raises, the abdominal muscles pull on the femur (thigh bone) to raise the leg by pivoting it about one end (Fig. P11.57). When you are lying...

A uniform, 7.5-m-long beam weighing 5860 N is hinged to a wall and supported by a thin cable attached 1.5 m from the free end of the beam. The cable runs between the beam and the wall and makes a 40...

As part of an exercise program, a 75-kg person does toe raises in which he raises his entire body weight on the ball of one foot (Fig. P11.63). The Achilles tendon pulls straight upward on the heel...

Consider the following three stocks: Stock A is expected to provide a dividend of $10 a share forever starting at the end of the first year (time t = 1). Stock B is expected to pay a dividend of $5...

thank you Which of the following is a fixed cost? A Direct labor cost B Direct materials cost Straight-line depreciation expense Sales commission expense

Comparative income statements and balance sheets for Coca-Cola are shown below ($ millions) Income Statement Year 2 Year 1 Revenues Net Sales $20,092 19,889 Cost of Sales 6,044 6,204 Gross Profit...