EXERCISE 1: Consider the waveguide of ExampleCalculate the phaseconstant, phase velocity and wave impedance for TE10 and TM11 modes at theoperating frequency of 15 GHz.=192.4 . ForAnswer: For TE10, B = 615.6 rad/m, u = 1.531 × 108 m/s, TE529.4 rad/m, u = 1.78 x 10 m/s, TM = 158.8 Q.TM11, BExample 1: A rectangular waveguide with dimensions a = 2.5 cm, b = 1 cm is tooperate below 15.1 GHz. How many TE and TM modes can the waveguidetransmit? if the guide is filled with a medium characterized byσ = 0, &=4&o Hr = 1°Calculate the cutoff frequencies of the modes.

Answered: Image /qna-images/answer/e5d5ea97-d35d-4c6f-b836-826a3261b8e8.jpg

Answered: EXERCISE 1: Consider the waveguide of…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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05 A DSB-SC AM signal is modulated by the signal 71 (?) == Bcos2000nt + cos6000nt The modulated signal is u(:) -- 100m (:)cos2nf,t 1-Determine and sketch the spectrum of the AM signal. 2-Determine the average power in the frequency components. where f = 1 MH:
The antenna current produced by an unmodulated carrier is 2.4 A into an antenna with a resistance of 75 ohms. When amplitude- modulated, the antenna current rises to 2.7 A. What is the percentage of modulation?
Q3) A carrier, amplitude modulated to a depth of 50% by a sinusoid, produces side frequencies of 5.005 MHz and 4.995 MHz. The amplitude of each side frequency is 40V. Find: 1-The frequency and amplitude of the carrier signal. 2-The total output power. 3-The transmission efficiency. 4- Repeat (1-3) if the amplitude of each side frequency is 20V.
Question 1 In this homework, you are supposed to design a WBFM generator using Armstrong method. The required WBFM should be able to transmit an audio signal of bandwidth 50HZ to 4kHz. Design an Armstrong indirect FM modulator to generate an FM signal with carrier 100 MHz and Af 200 kHz. A narrowband FM generator with fe = 100 kHz and 4f = 10 Hz is available. Only frequency tripplers are available as frequency multipliers. In addition, an oscillator with adjustable frequency from 22 to 26 MHz is also available for mixing, along with bandpass filters of any specification. Show your work to get full credit (labelled block diagram, complete calculations for local oscillator frequency etc.).
Find cut.off frequency.
The carrier signal of amplitude 10V is frequency modulated (K=2kHz/V) by a signal with frequency spectrum shown: a. Determine the approximate bandwidth of the FM signal (Bessel approximation).b. Determine the approximate bandwidth of the FM signal (Carson approximation).c. The power dissipated by the FM signal in a 75-ohm antenna.Answers a) 24 kHzb) 16 kHzc) 0.667 W
Given: Carrier 10 MHz Modulated 10 kHz wave 20 kHz frequency deviation Find: Bandwidth of signal using bessel func. ASAP. Thank you!
= The design spectrum has Sps = 1.8, SD1 = 0.9, S₁ 1.1, I = 1.00, and R = 6. Determine C, if the period is 0.4 sec. Give the answer to three decimals. Assume that the period is not longer than TL.
A T-junction power divider is the simplest network that can be used for power division or power combining. As an engineer you need to (a) design a lossless T-junction divider for a 3:1 power split with a 30 source impedance. Sketch the diagram. (b) design quarter-wave matching transformers to transform the impedances of the output lines to 30 . (c) determine the magnitude of the scattering parameters for this circuit with a 30 characteristic impedance.
4. short answers a. What is the effective antenna area of an antenna at 2500 MHz, if the gain is 13 dBi. b. For a WCDMA handset with 7 dB noise figure and 5 MHz effective noise bandwidth, calculate the noise floor in dBm. c. An NBA basketball player is close to 2 meters tall, and an “Umpa-Lumpa” from the movie “Willie Wonka” is 0.5 meters tall. Assuming 2-ray propagation model, what is the ratio of the signal strength received by the two people? d. Consider a 12-km microwave link with 15 meter towers at both ends, calculate the minimum frequency in GHz, such the first Fresnel zone does not intersect the ground? Assume that the ground is flat between the towers.
Answer all question.
Communication system

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