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Design Assignment -
You are required to design a coaxial transmission line as shown in Figure. The requirements are that the characteristic impedance has to be 75Ω and the electrical length must be 360o (1 wavelength) at 2 GHZ. You need to use Teflon (εr = 2.1) as the dielectric and you can consider it is a Iossless line. Also the radius of the outer conductor should be between 3 and 8 mm.
Calculate:
a. The physical dimensions of the transmission line, as the inner (ri) and outer (ro) radius and the length of the conductors.
b. The capacitance and inductance per meter.
c. How much time it takes for a signal to travel through the cable.
A window is etched through a 500 nm thick oxide on a [100] silicon wafer. The wafer is re-oxidized at 1100 °C using wet oxidation to grow a 750 nm thick film inside the window. Draw a cross-section of the wafer following the second oxidation.
All numbers are expressed in hex notation. For the following three instructions, each is executed from the above initial state. Assume each instruction is independent of the others: MOVE *R2, R1 move R1 to what R2 is pointing at
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A second infinite planecarrying a uniform chargedensity s2 = 45 nC/m2 intersectsthe xz plane at the z axisand makes an angle of 30° with the xz planeas. Find the electric field inthe xy plane at each of the following locations.
The goal is often to "balance" the bridge by making vx = 0 V. Derive an expression for RX in terms of the other resistors for when the bridge is balanced.
A twelve pole, 480V, 60Hz synchronous motor has a reactance of 5 ohm. The field current is adjusted so that the equivalent field voltage Ef is 520V (line-to-line). Calculate the following: (a) Maximum torque. (b) Power factor at the maximum torque..
A 200 ft length of solid copper wire is measured to have a resistance of .500 Ohms. a. Determine the cross sectional area of the wire in both square mils and in circular mils. b. Determine the diameter of the wire in mils and in inches.
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