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A N-turn resonant circular loop with a uniform current distribution and with a circumference of f/4 , is fed by a lossless balanced twin-lead transmission line with a characteristic impedance of 300 ohms. Neglecting proximity effects, determine the (a) closest integer number of turns so that the input impedance is nearly 300 ohms; (b) input impedance of the antenna; (c) reflection coefficient; (d) VSWR inside the transmission line.
The message signal x(t), in the following system has a nabdwidth of 10kHz. The center frequecy of the Narrow Band Frequency Modulated (NBFM) signal nbfm(f) is 1Mhz, the frequency deviation f1=1khz and the amplitude of the NBFM signal is 1V.
An unknown semiconductor has a bandgap of 1.1eV and Nc = Nv. It is doped with 10^15 cm-3 donors where the donors fully ionized. Given that EF is 0.25 eV below Ec, calculate the concentration of electrons and holes in the semiconductor at 300 K and..
Discuss different applications that could use non-inverting and inverting amplifier circuits. Will the actual op amp characteristics cause any challenges if used for each application What effect will high source resistance have on your output volta..
This assignment contains electronics engineering questions like State the commonly found components of a SCADA (Supervisory control and data acquisition) system. and decribe the function of the HMI in a SCADA system.
Find the Laplace transform of a rectangular voltage pulse that is 0 V until time 0 s, then jumps to 5 V and stays there until time 2 ms, then returns to 0 V and stays there after time 2 ms. Hint: express the pulse in terms of unit step functions.
Design a DC current source to meet the following specifications: - Current source value: 100 u-amps +/- 1% (over all possible load and supply voltage conditions). - Output resistance: >20 Mohms. - Available DC voltage sources are bipolar and range fr..
Calculate the amount of work done if the process is considered to be polytropic. Assume the temperature to be 273K and the value of k for the process to be 1.4. All losses are neglected.
Laplace transforms enable interpretation and manipulation of different signals by viewing these signals as either time domain signals/pulse or else frequency domain representations
Make a table showing Temperature as a function of pressure for Psat from 20 to 600 psia every 20 psi, and another table showing pressure as a function of temperature from 150 degrees to 350 degrees every 20 degrees.
A filter has the following characteristics: Attenuation is 0 dB from 0 Hz to 2.5 kHz. Phase angle decreases linearly with increasing frequency above 2.5 kHz. Above 5 kHz the filter has steadily increasing attenuation.
Looking at feedback and some Opamp problems, If the unity gain frequency is 5 MHz and the midband open-loop voltage gain is 200,000, what is the cutoff frequency?
A certain transistor is to be operated at a collector current of 50mA. How high can VCE go without exceeding a PD(MAX) of 1.2W?
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