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An antenna has a radiation pattern function given by
Find the main beam position, the 3 dB beam widths in the principal planes, and the directivity (in dB) for this antenna. What is the polarization of this antenna?
design an 8-bit programmable microprocessor-compatible TIMER IC by doing the following steps: Specify, draw , and clearly label( the functional name), the complete set of 8-bit registers that will be needed in the TIMER.
Explain the difference between intrinsic and extrinsic semiconductors. State the mass action law for semiconductors - Draw a labelled cross-section of an n-channel MOSFET.
f(t) = (2+j2)e^(-3jt)+j2e^(-jt)+3-j2e^(jt)+(2-j2)e^(j3t) a) Sketch the exponential fourier spectra b) By inspection of part a sketch the trigonometric Fourier spectra c) Find the compact trigonometric Foreir series
Two nickel-cadmium batteries provide electrical power to operate a satellite transceiver. If both batteries are operating in parallel, they have an individual failure rate of 0.1 per year.
begin to figure out how to determine which BJT is off or why. I tried modeling the BJT's as two diodes: NPN BJTshares anodes and PNP shares cathodes. Doing it this way doesnot provide the correct answers though. How to determine which one is off o..
An input signal x(t) = cosωct is sampled by an ideal sampling function with ωs= 1.5 ωc. The sampled signal is then filtered with an ideal low pass filter H(ω)= rect(ω/1,5ωc) to form an output signal y(t) a. Sketch the fourier transform of the sampl..
Design (simulaton, analysis), build and test an op-amp based instrumentation amplifier with the following specifications: (a) Have very high input resistance (minimum is 1 Mega Ohm). (b) Have very high voltage gain (minimum 1000V)
A permanent magnet commutator motor produces a torque of8 N. m with armature current = 10A. armature R=.16 ohms. if motordrives a load requiring torque of 20 N. m at speed = 1800rpm
Discuss how the angle of the incident light affected the solar cell? How could solar cell designs and/or installations be designed to counter this affect?
The Bandwidth of a broadband signal is 6 MHz and it's maximum frequency is 106Mhz. What is the most likely carrier frequency. WHich of the follwing is not a fundamental characteristics determines the effectiveness of a communication system.
A shunt-connected motor delivers an output power of 24 h p at 1200 rpm while operating from a source voltage of 440V and drawing IL = 50A. The resistances are RA = 0.05 Ω and RF +Radj = 100 Ω. Find the developed torque and efficiency of the motor.
Show that aliasing will occur if the signal y(t) = e^-t(sin)(2t) is sampled with T=0.2 by finding the z transform of the sampled sequence and then finding the inverse z transform.
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