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1. Discuss the application of the directional receiving properties of a loop antenna in the location of the source of a radio signal.
2. How is the effective area of a receiving antenna defined?
3. Outline the derivation of the expression for the effective area of a Hertzian dipole.
4. Discuss the derivation of the Friis transmission formula.
If i were to have a plane wave in free space with the following E field intensity: E = 15cos(ωt + 10πz + θ) in the y direction V/m and H at t=0 z=1.15m is 0.02 A/m how can I find the initial phase, θ
What is the difference between electromotive force and potential difference?
Discuss the differences between series and parallel circuits. What are some advantages and disadvantages of each type Discuss why the total power equals the sum of the individual values of power, whether a series circuit or a parallel circuit is u..
Given vectors T = 2ax - 6ay + 3az and S = ax + 2ay + az, find (a) the scalar projection of T on S, (b) the vector projection of S on T, (c) the smaller angle between T and S.
Find the system function H (z) of the system. Plot the poles and zeros of H (z), and indicate the ROC.
The current amplification factor β of a BJT is very sensitive to the base width as well as to the ratio of the base doping to the emitter doping. Calculate and plot β for a p-n-p BJT with Lnp = Lpn for: (a) nn = pp and Wb/Lnp = 0.01 to 1
For the differential amplifier shown in Fig. 4-8, R1 and R2 are 1% resistors with values of 4.7 k Ω and 270 k Ω, respectively.
Find and express ZEQ(s) as a rational function and locate its poles and zeroes.- If R = 15 kΩ, select values of L and C to locate poles at ± j200 krad/s. Where are the resulting zeroes?
A dc amplifier has a midband voltage gain of 200. If the upper cutoff frequency is 10 kHz, what is the voltage gain for each of these input frequencies: 100 kHz, 200 kHz, 500 kHz, and 1 MHz?
Calculate the approximate quantization S/N ratio in the baseband audio signal at the receiver output (after the DAC and LPF).
Derive an expression for the cross-correlation function of the two outputs.- Derive an expression for the cross-spectral density of the two outputs
Try to replicate the experiment carried out in Illustration 180. (f) On your own design a PLL as in Illustration 181 and try to set the control voltage for the VCO in such a way that the PLL works.
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