1. A cell is located over smooth, flat terrain. The system operates in the 1900 MHz band and the base station antenna is located 15 m above the ground. The mobile terminal is 250 m away from the base and its antenna is 1.5 m above the ground. (Use 1920 MHz in your computations.) (a) Compute the propagation loss. (b) What is
For the depletion-load amplifier, let W1=80microm, L1=4micrometers, W2=8 micrometers and L2=32 micrometers. If the body-effect parameter X=0.2, find the voltage gain neglecting the effect on ro. a. -44.72 V/V b. -45.6V/V c. 44.72 V/V d. 45.6 V/V
Consider the system modeled by: x' = Ax + Bu , y = Cx + Du -5 1 -1 A = , B = , C=[1 0] , D=0 1 -5 1 a) Determine the transition matrix eAt using the eigenvalues and eigenvectors m
Given the following matrices 3 1 0 A = 0 3 1 0 0 3 3 1 0 A = 0 3 0 0 0 4 4 0 0 A = 0 3
I need some help solving this problem without matlab: a. Use Routh-Hurwitz to find vales of K so that L = k (s+1) / (s^2 +4) (s+10) has poles to the left of s= -2 b. Make a sketch of the root-locus of the above L(s) to explain the results above. You need to calculate the asymptotes (as s and k go to infinity) and angles of dep
I need some help with this question, look at attached files for better symbol representation and also diagrams: For a system with P = (3e^-0.1x / 2s + 1), it is desired that a step input disturbance, di = 3 sigma (t), results in an output of not more than 0.1. (Note that the dead time gives a relatively small effect in the clo
Design a highpass filter with a cutoff frequency of 1000 Hz with a load resistance of 1000 ohms.
Consider the following system whose state space representation is as follows: a) Assume that the initial conditions are zero. If the reference input is a unit step input , compute x1(t), x2(t), and y(t) b) Find the transfer function of the system. c) Using the transfer function found in (b), Compute y(t). d) Plot x1
(See attached file for full problem description) --- 1. Constant voltage of 10V is applied to an inductance... 2. Find the equivalent inductance for each of the series and parallel combinations... ---
Assume that the operational amplifier is ideal; determine the transfer function V2/V1 of the circuit shown. See attached file for full problem description.
For the network of Fig. 8.82, determine RE and RB if Av = -10 and re = 3.8ohms. Assume that Zb = Bre Note: B = 120 ro = 80k ohm (See attached file for full problem description)
*10. For the network of Fig. 10.53: (a) Determine AVNL, Zi and Zo. (b) Sketch the two-port model with the values determined in part (a). (c) Determine Av and Avs. (d) Change Rs to 1k and determine Av and Avs. What is the effect of increasing levels of Rs on the voltage gain? (e) Change Rs to 1k and determine Avnl, Zi, and
Using one 555 timer, design a pulse generator that will have the following continuously variable ranges: a) 0.1 kHz to 1kHz b) 1kHz to 10kHz c) 10kHz to 100kHz A duty cycle of 0.5 is required. Use the same potentiometer for all the 3 ranges.
We want to design a voltage divider circuit to provide an output voltage Vo=5V from a 12V source as shown in the attachment problem, the current taken from the 12 V source is to be 100mA. Find values of R1 and R2.
Find the particular solution for V(t) including the numerical values of all parameters. See attached
The switch opens at t=0. Find an expression for V(t) and sketch to scale versus time. See attached
(See attached file for full problem description) --- A signal x(t) of finite energy is applied to a square-law device whose output y(t) is given by y(t) = x2(t) The spectrum of x(t) is limited to the frequency interval -W ≤ f ≤ W. Show that the spectrum of y(t) is limited to -2W ≤ f ≤ 2W. (Hi
What percentage of modulation corresponds to a modulation index m of 0.5?
What if any are the benefits of multiplexing?
We want to store sufficient energy in a .01-F capacitor to supply 5-hp for 1 hour. To what voltage must the capacitor be charged? (1 hp=745.7 watts). Does this seem to be a practical method for storing this amount of energy? Do you think that an electric automobile based on capacitive energy storage is feasible?
Matlab code for Gauss-Markov Simulated Annealing
Three two-input "AND" gates have their outputs connected to an "OR" gate. The first "AND" gate has each of its inputs at logic HIGH level. The second "AND" gate has each of it's inputs at logic LOW level. The third "AND" gate has one input at logic HIGH level, and the other input at logic LOW level. What is the output of the "OR
(See attached file for full problem description) --- Electrical circuit problem asking for a calculation of the closed loop transfer for a gain, k = 15. --- (See attached file for full problem description)
The cart in figure 1 rests on a ramp which is inclined 30 degrees with respect to the horizontal. At t=0s the cart is released from rest(i.e with no initial velocity). As indicated, the air resistance is proportional to the velocity squared. See attached
Using negative edge triggered J-K flip-flops, design a 3-bit synchronous sequence generator to generate the following sequence: 0,1,3,6,0..... 1. Draw up a table showing the input requirements on the J & K terminals for the four possible changes of state at the output. The table should be headed: PRESENT Q, NEXT Q, INPUTS J
Refer to diagram in attached file. 1. Derive an expression for the complex impedance between terminals A&B referring to the reactances as Xc & XL. Express the answer in the form of (real part + j * imaginary part) 2. Calculate the phase angle of the current I relative to the voltage Vin for a source frequency of 3kHz(must
Please help with the following problem. Mobile IP was intended to work with legacy correspondent hosts and legacy applications. However, some advantages may be gained if correspondent hosts are aware of mobility in certain ways. a) If a correspondent host is able to do IP-in-IP decapsulation, it may be able to communicate
You have a bandwidth of 10 MHz (per direction) in a single-cell system and want to deploy a wireless telephone system. You have the following options: analog 30-kHz channels (as in AMPS), digital 30-kHz channels (each supporting 3 users as in IS-54), digital 200-kHz channels (each supporting 8 users as in GSM), or CDMA with 10-k
You want to download a 5 Mbit file over a 10-Mbps Rayleigh fading channel in the 1800 MHz frequency band. You are traveling at 6 km/h and use 1000-bit packets. The fading margin of the channel is 20 dB. If any packet is received in error during the transfer, the operation is aborted. (a) What is the probability that you successf
Find the relationship between the phase margin (on the Inverse Nichols Chart) and the damping of the closed loop poles (Full problem description found in attached .doc file)