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1. What should the length of an antenna be if it is going tobe used to send data at 145.01MHz, assume a 1/4λmonopole antenna is used.
2. The impedance of an antenna was measured as z = 17 -j470Ω what does this mean?
3. An antenna is measured to be 30inches in length, if it is assumed to be a 1/4λ monopole, what frequency is this antennaused for?
4. An antenna forms a 1/2λ dipole. How can you adjust the antenna to resonance for a clearer signal to be recieved.
5. What term s used to describe the wire from an antenna to reciever
Two metal plates with an area of 4 cm2 and separation distance of 0.01 cm are used to form a capacitance transducer. If the material between the two plates has a dielectric constant of 2.5 and the dielectric constant of free space is 8.85 pF/m
A spread-spectrum acquisition system uses a serial search scheme.The synchroniser integrates the squarer output for interval of 0.1s and the synchroniser output is sampled at intervals of 0.05s . The probability of false alarm is 0.064255 .
a.) What isthe minimum sampling frequency to avoid aliasing b.)If the sampling frequency of fs=2500 samples/sec is used how many samples must be taken to give a frequency resolution of 10Hz
The current through a branch in a linear network is 2 A when the input source is 10 V. If the voltage is reduced to 1 V and the polarity is reversed, the current through the branch is a. - 2 A b. - 0.2 A c. 0.2 A
what effect does the diode barrier potential have on the difference between the peak input voltage and the peak output voltage Explain
Design the combinational 3 bit gray to binary code converter for conversion angular position of a shaft into binary code. 1) Complete the truth table 2)obtain the minimal solution with a K map 3) draw the circuit diagram, labels the inputs and output..
The maximum strength of the magnetic field in an electromagnetic wave is 3.44E-6 T. What is the maximum strength of the wave's electric field
Draw the winding on the stator and the winding on the rotor of a three-phase 6-pole synchronous generator which has salient poles. Assume that the stator winding is concentrated for simplicity. Show the values of the conductor angles on the stator..
An input signal given by Vin(t)=5cos(500pi*t)+5cos(1000pi*t)+5cos(2000pi*t) is applied to a basic lowpass RC filter. R=318.3 ohms and C=1 microFarad. Find the expression for the output signal in terms of t and pi.
Consider the simple model for HTTP streaming. Suppose the server sends bits at a constant rate of 2 Mbps and playback begins when 8 million bits have been received. What is the initial buffering delay
The input capture option on the HCS12 is used to measure the period of a 100 Hz signal. With an E-clock of 24 MHz and no scaling, how many overflows will occur Assume the free-running timer starts at 0x0000.
Hand calculate the expression for the voltage and current of the capacitor and plot these equations by using MATLAB and calculate the time constants of each circuit and point out this time constants at your voltage graphs.
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