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For a helical antenna, the half-power beamwidth and directive gain are given by
where C = πD, N = L/S, and S = C tan α,in which α is called the pitch angle, and
The input impedance seen by the transmission line at point P is almost purely resistive, given by Za ∼ = 140C/λ. Calculate the antenna parameters of a 10-turn helix at f = 500 MHz by assuming that C = λ and α = 14π/180.
Assume that an abrupt Si p-n junction with area 10-4 cm2 has NA=10 17 /cm 3 and ND=10 17 /cm 3 is working at room temperature. It is given that μ n = 700 cm 2 /v-s, μ P =250 cm
Q. Can you explain about Multiple Poles? Let us consider that F 1 (s) has all simple poles except, say, at s = p 1 which has a multiplicity m. Then one can write When
(a) "Pulse Code Modulation (PCM), as used in telephony, samples a signal at 8 kHz using 256 quantization levels". i. Outline how this scheme works with the help of sketches and,
describe torque angle in ships electrical propulsion system
Q. What do you mean by Load factor? The two components of electric service are demand and energy. Demand is the maximum level of real power which the electric utility must supp
Metering Techniques The techniques of metering could be categorized depending upon the voltage at which consumers are fed as: 1. LT (Low Tension) Metering, and 2. HT (Hi
What is a control word? It is a word kept in a register (control register) used to control the operation of a program digital device.
Q. Explain about Dial Pulses? Dial pulsing (sometimes known as rotary dial pulsing) is the method basically used to transfer digits from a telephone set to the local switch. Pu
Analog-to-Digital (A/D) Converters An A/D converter converts analog input signals into digital output data in many areas such as process control, aircraft control, and telemetr
please I need help in matlab to program complex expression in antenna diversity please
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