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Find the necessary LO phase noise specification if an 860 MHz cellular receiver with a 30 kHz channel spacing is required to have an adjacent channel rejection of 80 dB, assuming the interfering channel is at the same level as the desired channel. The final IF voice bandwidth is 12 kHz.
Problem 1: Antenna gain is usually given in relation to an isotropic antenna (radiating/receiving equally in all directions). It can be shown that the effective area of such an antenna is Aiso = λ2/4π.
The diagram of FIGURE 2 shows a bi-directional opto coupler input interface circuit. When a supply voltage of 20 V is applied the LED carries a current and 2 V is dropped across it. Calculate the value of the LED current and the value of current t..
Express both of these reference temperatures (3 and 290 K) in degrees fahrenheit.
Know the materials needed for electrostatic sprayer
create a 512-length signal by using the rand command, then low-pass filter the signal with the filter h=1/2[1 1] to bandlimit the function, which can be represented with by the command filter.m with b1=b2=1/2, and a1=1
A two-winding, single-phase transformer rated 3 kVA, 220:110 V, 60 Hz is connected as an autotransformer to transform a line input voltage of 330 volts to a line output voltage of 110 V and to deliver a load of 2 kW at 0.8 lagging power factor.
A home entertainment center has four different audio sources that can be played over the same set of speakers. Each audio source, named A,B,C,D, is connected using 8 wires on which the digitizedaudio signal is transmitted.
A propagating electromagnetic wave is described as follows (inset your own equation for Electric field). Determine if the wave is linearly polarized, left-hand elliptic polarized, right-hand elliptic polarized, left-hand circular polarized, or rig..
A 120volt, 60Hz single phase load of 3.2KW with an inductive power factor of 8.1 needs to be corrected to a power factor of 0.95 (inductive). What capacitance value (in uF) is needed
The light sensor, which is active when it is dark, monitors the outdoor light and the timer can be programmed to any time. Design the logic to turn on an indoor light if it is dark outside and the timer has set the enable. A high turns on the ligh..
determine power and limiting error of the power?
i) Identify the PSK type and calculate the bandwidth if the modem is transmitting with 9600bps and 2400 baud. ii) Suggest a way to reduce the baud rate to 1200 baud and calculate the new bandwidth.
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