(a) For the AM wave s(t)=[5+3 cos(810 t)] cos(410 t) V, (i) Determine the carrier and...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
(a) For the AM wave s(t)=[5+3 cos(8×10³ t)] cos(4×10³ t) V, (i) Determine the carrier and modulating frequencies in kHz. (ii) (iii) (iv) Determine the transmission bandwidth in kHz. (i) (2 marks) (1 mark) Determine the percentage modulation. (1 mark) Determine the carrier power and total sideband powers in mW and dBm if the signal appears across a 50 2 load. (6 marks) (b) The baseband signal m(t) in the frequency translated signal v(t) = m(t) cos(27 ft) is to be recovered by multiplying v(t) by cos(2π ft+). The product waveform v(t) cos(27 ft+) is filtered by a lowpass filter which rejects the double-frequency signal. What is the output signal from the filter? (6 marks) Determine the maximum allowable value in degrees for the phase such that the filter output power is greater than 90% of its maximum possible value. (2 marks) (iii) If m(t) is bandlimited to 10 kHz, determine the minimum value of fe, for which it is possible to recover m(t) by lowpass filtering the product waveform v(t) cos(2π ft+). (7 marks) (a) For the AM wave s(t)=[5+3 cos(8×10³ t)] cos(4×10³ t) V, (i) Determine the carrier and modulating frequencies in kHz. (ii) (iii) (iv) Determine the transmission bandwidth in kHz. (i) (2 marks) (1 mark) Determine the percentage modulation. (1 mark) Determine the carrier power and total sideband powers in mW and dBm if the signal appears across a 50 2 load. (6 marks) (b) The baseband signal m(t) in the frequency translated signal v(t) = m(t) cos(27 ft) is to be recovered by multiplying v(t) by cos(2π ft+). The product waveform v(t) cos(27 ft+) is filtered by a lowpass filter which rejects the double-frequency signal. What is the output signal from the filter? (6 marks) Determine the maximum allowable value in degrees for the phase such that the filter output power is greater than 90% of its maximum possible value. (2 marks) (iii) If m(t) is bandlimited to 10 kHz, determine the minimum value of fe, for which it is possible to recover m(t) by lowpass filtering the product waveform v(t) cos(2π ft+). (7 marks)
Expert Answer:
Related Book For
Discrete and Combinatorial Mathematics An Applied Introduction
ISBN: 978-0201726343
5th edition
Authors: Ralph P. Grimaldi
Posted Date:
Students also viewed these accounting questions
-
A solvent A is to be recovered by distillation from its water solution. It is necessary to produce an overhead product containing 95 mol% A and to recover 95% of the A in the feed. The feed is...
-
Zinc is to be recovered from an ore containing zinc sulfide. The ore is first roasted with oxygen to produce zinc oxide, which is then leached with aqueous sulfuric acid to produce water-soluble zinc...
-
Potassium dichromate (K 2 Cr 2 O 7 ) is to be recovered from a 21 wt% aqueous solution in a continuous crystallization operation. The solution is joined by a recycle stream and fed to a vacuum...
-
On the basis of the given scenario create a file Expenses.txt, Open the file and copy it into another Expenses2.txt, Also show output on screen A college has announced a total budget of 50,000Rs.for...
-
Bon Nebo Co. sold 25,000 annual subscriptions of Bjorn 20XX for $85 during December 2014. These new subscribers will receive monthly issues, beginning in January 2015. In addition, the business had...
-
Edilcan Inc. has been offered an automated special-purpose welder (robot) for $60,000. The machine is expected to have a useful life of eight years with a terminal disposal price of $12,000. Savings...
-
Why do U.S. phone numbers have seven digits? (not including the area code)?
-
The auditor has gathered shipping cutoff information for Johnny M. Golf Company in conjunction with its December 31 year end. The auditor has observed the clients year-end physical inventory and is...
-
Simplify the complex fraction. X y +8 y 4
-
Jennifer Carter graduated from State University in June 2005, and, after considering several job offers, decided to do what she always planned to do go into business with her father, Jack Carter....
-
1. Describe technology and invention in finance. 2. What are financial innovation and the growth of the shadow banking system? 3. Discuss bank consolidation. 4. What is thrift industry?
-
Email lacks both the visual element and the instantaneous connection of some other media. Could these supposed shortcomings help some employees communicate more comfortably and effectively? Explain...
-
Your management consulting firm frequently hosts events for current and potential clients at a local yacht club, a winery, and the symphony. One new consultant on your team recently joked about...
-
Assume you are an art director at an advertising agency, where your responsibilities are partnering with various copywriters to brainstorm the concepts for new ads and then working on your own to...
-
A day after sending an email to all 1,800 employees in your company regarding income tax implications of the companys retirement plan, you discover that one of the sources you relied on for your...
-
To better understand how cultures can differ even between close friends, find someone who lives close to you with whom you can discuss cultural differences. Create a list of similarities and...
-
A cylindrical steel pressure vessel 400 mm in diameter with a wall thickness of 20 mm, is subjected to an internal pressure of 4.5 MN/m. (a) Calculate the tangential and longitudinal stresses in the...
-
Keating & Partners is a law firm specializing in labour relations and employee-related work. It employs 25 professionals (5 partners and 20 managers) who work directly with its clients. The average...
-
In how many ways can a family of four (mother, father, and two children) be seated at a round table, with eight other people, so that the parents are seated next to each other and there is one child...
-
Use the fact that every polynomial equation having real- number coefficients and odd degree has a real root in order to show that the function f: R R, defined by f{x) = x5 - 2x2 + x, is an onto...
-
(a) If n and r are positive integers with n r, how many solutions are there to x1 + x2 + ... + xr = n where each xt is a positive integer, for 1 i r? (b) In how many ways can a positive integer n...
-
Define strategic compensation.
-
Are the three main elements of compensation systemsinternal consistency, market competitiveness, and recognizing employee contributionsequally important, or do you believe that they differ in...
-
Butcher Enterprises has experienced substantial employee turnover among its office workers. During exit interviews, more than 80 percent stated that low pay was the top reason for resigning. The...
Study smarter with the SolutionInn App