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what is compound statementif we wish to have more than one statement following the if or the else they should be grouped together between curly
q determine the effective input noise temperature of a long piece of waveguide that connects an antenna to a receiver with a loss of 34 db at 12 ghz
give the syntax of if-else and switch statements and explainif elsethis is used to decide whether to do something at a special point or to decide
q if an antenna has an available noise power of 16 times 10-15 w in a 1-mhz bandwidth find the antenna
q two stations using identical antennas with diameters of 50lambda and aperture efciencies of 06 at 35 ghz are separated by 30 km with negligible
what is a symbolic constant how it is defined symbolic constants are constants of any type declared by using the define compiler directive it is a
two stations located on mountain tops 40 km apart communicate with each other using two identical paraboloidal antennas with pencil beam- width of
q a paraboloidal antenna has an aperture efciency of 06 and a diameter d 100lambda at 6 ghz illumination by the feed is such that the beamwidths of
q aconical horn has a side viewas shown in figure the maximum value ofthe directive gain is given by gd sim 513dlambda2 where d radic333lambdal1
q the effective area of a dipole is given by ae 013lambda2 find the effective area of a half-wave dipole at 3
q the radiation pattern of a half-wave dipole antenna is given bya sketch the radiation pattern in the principal plane of xz containing angle thetab
q an antenna has beam widths of 3deg and 10deg in orthogonal planes and has a radiation efciency factor of 06 find the maximum radiation inten-sity
q the power gain of an antenna is 10000 if its input power is 1 kw calculate the maximum radiation intensity that it can
bring out the importance of hierarchy of operators the operators within c are grouped hierarchically according to their precedenceie
q an antenna has an aperture area of 10 m2 an aperture efciency of 06 and negligible losses if it is used at 5 ghz determinea its power gainb the
q amicrowave relay systemuses two identical horn antennas mounted on towers spaced 40 km apart if fc 6 ghz and each relay hop has l 60 db calculate
q a satellite radio transmitter has pin 3 w and gt 30 db the receiving antenna has a circular aperture with radius r at the ground station 30000 km
q a signal with bandwidth of 100 mhz is to be transmitted 40 km by los radio transmission taking bfc 130 and using a circular-apertureparabolic dish
q describe the following phasor equations represented in the time domaina macr e k1e-macr gammazb macr e k2e macr gammazwhere z is the space
a now consider a typical open-wire transmission line with parameters of r 14 mi l 46 mhmi c 001 microfmi and g 03times10-6smi if the line
q a source of impedance macr zs rs 100 has an open-circuit voltage vst 125 cos omegaot and drives a 75- transmission line terminated with a 75-
q the cutoff frequency of a dominant mode in an air-lled rectangular waveguide is 3 ghz what would the cutoff frequency be if the same wave - guide
q a what is the difference between a tem mode and a te modeb explain the terms cutoff wavelength and dominant mode as applied to waveguides find the
q comment briey on the followinga why are waveguides not used at low frequenciesb why are open-wire lines not generally used as guiding structures at
q a transmission line with a dielectric epsilonr 35 is 100 m long at a frequency of 10 ghz how many wavelengths long is the