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A microstrip antenna system operating at 915MHz must be designed using Rogers RO3010 substrate with the thickness of 0.635mm. The microstrip antenna should be connected to a microstrip feeding line of Zf=50O through a quarter-wavelength microstrip transformer. Find the length (L), the width (W) and the input impedance (Zin) of the microstrip antenna.
During an all-night cram session, a student heats up a 0.491 liter (0.491 x 10- 3 m3) glass (Pyrex) beaker of cold coffee. Initially, the temperature is 19.7 °C, and the beaker is filled to the brim.
Write an equation to help determine P-type body doping concentration Na for a required threshold voltage V (sub TN) for an N-channel Al-Sio(sub 2) -Si MOSFET.
For the local oscillator you selected, what transmission frequencies could cause interference to the satellite system and how could the interference be avoided? Show a diagram.
A CS amplifier using an NMOS with gm = 3.8 mA/V is found to have an overall voltage gain of -16 V/V. What value should a resistance RS inserted in the source lead have to reduce the overall voltage gain to -8 V/V
A military satellite uses 10 GHz for the downlink frequency. The distance to the satellite is approximately 36000 km. if the satellite transmitter produces a power of 50 dBm with a transmit antenna gain of 20 dB and on the ground
Why then do we even use JFETs as amplifiers. What is it that make them attractive even though they are non-linear. How do we minimize the effect of their non-linearity
What is the inverse Laplace transform of 32/s(s^2+64). Please show all work.
What is the function of the enable control input of a tri-state buffer If the output of two or more tri-state buffers is connected to each other, what is the restriction on enable control input lines What does happen when this restriction is viola..
A state government is considering construction of a flood control dike having a life span of 15 years. History indicates that a flood occurs every 5 years, on average, and causes $600,000 in damages on each occasion.
A perfect conductor 2m long is moved at a speed of 36 Km/hr through a magnetic field having a flux density of 1.0 T. If a 1 resistor is connected across the ends of the conductor, calculate: (a) The induced voltage (b) The current in the circuit
A Si sample is uniformly doped with phosphorus at 5 E 16 cm^-3. We make a p-n junction by implanting boron atoms into the surface layer. The implanted depth is 0.15 µm. What should the surface concentration of the boron implant
Assume dual rail logic. Dual rail logic means that both a variable and its complement are available as inputs to the logic block, such that an inverter is not needed to generate B' from B.
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