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Describe the essentials of the design principles of a dielectric resonator (DR) and the advantages offered over cavity resonators. A ceramic of relative permittivity 37 is in the form of a cylindrical DR for use at 1 GHz. Estimate the overall dimensions of the DR. The ceramic has a temperature coefficient of linear expansively of 5 MK-1 and a temperature coefficient of permittivity of 716MK1. Estimate by how much the resonance frequency will change for a 5°C change in temperature.
derive a general formula for percent clipping of a unit amplitude sinusoidal test signal; this is the percent of time during one period in which the signal is clipped. The formula includes peak sinusoidal voltage Vp that would appear at the ouput
How does the spacing between steps of IB compare to the spacing betweensteps of VGS? Compare VCsat to VP in defining the nonlinear region at low levels of output voltage ur question here...
1. For the state diagram shown, answer the followings: A. Identify type of the circuit
1)Why BJT is called a bipolar and current controlled device 2)What are the different modes of operation in BJT and in which region it act as an amplifier 3)Why Emitter is highly doped ,base lightly doped and collector moderately doped
The Karina Light Company manufactures inexpensive light-emitting diode (LED) bulbs whose estimated lifetime in normal distribution with a mean of 9000 hours and a standard deviation of 500 hours. Calculate the probability that the LED will fail wit..
The transfer function of a circuit is given by H(s)= 2s+4/4s^2+2s+2 a. Express the transfer function in a form in which the coefficients of the highest power of s are unity in both numerator and denominator.
What is the required calibration factor for a sinusoid? Would the same calibration factor apply to a square wave?
A dc shunt motor drives a centrifugal pump at a speed of 1000rpm when the terminal voltage and the line currents are 200V and 50A, respectively. The armature and field resistance are 0.1 ohm and 100 ohm respectively.
Determine the equilibrium composition of the products of combustion, and the amount of heat released by this combustion, in kJ/kmol methane.
Why, or why not? What are the ethical implications of this for the engineers working for an automobile manufacturer?
The efficiency and power factor for these conditions are 85 and 90% respectively. The combined windage, friction, and stray power losses are 1011W, the rotor conduction losses are 969W, and the stator conductor losses are 1559W.
(a) the conductivity in a p type silicon semiconductor at T=300 K is sigma=0.25 (ohm-cm)^-1. Determine the thermal equilibrium values of electron and hole concentrations. (b) Repeat part (a) for n type GaAs semiconductor if the resistivity is rho=..
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