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Cellular radio service has seen explosive growth. What will a cellular operator do when a group of cell sites are overloaded with traffic? Name at least four ways that cellular radio differs from LOS microwave regarding propagation ? Describe and discuss locating and handover ? List and discuss actions that go on over the setup channel.
Identify the following standards organizations: ISO, ANSI, NIST, ASTM, NFPA, NEC, and NEMA.
The capacitance of a MOS structure is shown in the attached figure. (n+ polysilicon gate, SiO2 insulator, Si substrate). The plot is not necessarily to scale.
Propose a change to the scheme that keeps it simple but increases the number of distinct values representable.
An initially charged capacitance discharges through a resistance. At one time constant, what percentage of the initial voltage remains What percentage of the initial soted energy remains
Pendulum. Find the frequency of oscillation of a pendulum of length L (Fig. 42), neglecting air resistance and the weight of the rod, and assuming θ to be so small that practically equals θ.
How are Zener diodes specified? Define the important specification factors for the device
A certain boost converter is implemented with a MOSFET and a p-n diode. The MOSFET can be modeled as ideal, but the diode exhibits a substantial reverse-recovery process, with reverse recovery time tr and recovered charge Qr .
Voltage regulator utilizes a 500 mW Zener diode with Vz=6.7V at 20mA, rz=lOohm and IzK=5mA. The supply voltage y+ has a nominal value of 12V but can vary by ± 1 V. The load resistor is fixed at 330ohm
Find the surface currents for circular cylinders of circumference - Do the results seem to converge in every case with an increasing number of cells in the models?
Determine the corner frequencies and the limiting horizontal asymptotes of a common-emitter circuit with an emitter by pass capacitor. Consider the circuit with the parameters Re=4kΩ,Rc=2kΩ,Rs=0.5kΩ,Ce=1μF,v+=5v,V- =-5v.
Draw a System Sequence Diagram for the Register Module use case.
The voltage across the load must remain between 4.7 and 5.0 V for all values of load current. Design a voltage-divider network to supply the load. You may assume that resistors of any value desired are available.
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