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Q. Aconical horn has a side viewas shown in Figure The maximum value ofthe directive gain is given by GD ∼ = 5.13(D/λ)2, where D =√3.33λL1 and L1 = L/(1-d/D),in which d is the inside diameter of the waveguide. Beam widths for the main beam directed along the z-axis are given by θB = 60λ/D in degrees in the yz-plane, and by φB ∼ = 70λ/D in degrees in the xz- plane. Let the circular waveguide, with a 2.5-cm inside diameter, be expanded by adding a conical ?are to have an aperture with an inside diameter of 5.771λ at 8 GHz. For L1 = 10λ, find:
(a) The horn length L.
(b) The directive gain.
(c) The principal-plane beamwidths.
Q. Design the high-pass filter shown in Figure (by determining C) to have a half-power frequency of 1 MHz.
Q. For the low-pass filter configuration of Figure, with R i = R f = 1M, calculate C f such that the 3-dB point is at 1 kHz.
Q. An antenna with an effective noise temperature of 130 K couples through a waveguide that has a loss of 0.8 dB to a receiver. Find the effective noise temperature presented by th
Q. Tone used in stronger telephony? Dial Tone: This tone is used to specify that exchange is ready to accept dialled digits from subscriber. Subscriber must start dialling only
hi there, i have to write a program for seven segments counter with three buttons to make it counting up and down from 00 to 99 so i''m looking for someone can write it..........th
Q. What are the different types of Patrolling? When these are adopted? What are points to be considered while preparing the charts? Ans.- Types of Patrolling. 1. Keyman's
Ask questiDesing a suitable double - layer lap windingon #Minimum 100 words accepted#
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Q. These data were obtained from tests carried out on a 10-kVA, 2300:230-V, 60-Hz distribution transformer: • Open-circuit test, with low-voltage winding excited: applied voltag
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