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using the scattering parameter data for the gaas mesfet given in table 117 design an amplifier for maximum gain at 80
consider the impedance matching network shown at left below where a load zl l at port 2 is matched to a source
a 28 ghz radio link uses a tower-mounted reflector antenna with a gain of 32 db and a transmitter power of 5 wa find
the atmosphere does not have a definite thickness since it gradually thins with altitude with a consequent decrease in
on a clear day with the sun directly overhead the received power density from sunlight is about 1300 wm2 if we make the
repeat the oscillator design of example 134 by replacing the dielectric resonator and microstrip feedline with a
an oscillator uses an amplifier with a noise figure of 6 db and a resonator having a q of 500 and produces a 100 mhz
design a colpitts oscillator operating at 200 mhz using an fet in a common gate configuration including the effect of a
find the necessary lo phase noise specification if an 860 mhz cellular receiver with a 30 khz channel spacing is
a pulse radar operates at 2 ghz and has a per-pulse power of 1 kw if it is to be used to detect a target with sigma 20
the mariner 10 spacecraft used to explore the planet mercury in 1974 used bpsk withto transmit image data back to earth
a key premise in many science fiction stories is the idea that radio and tv signals from earth can travel through space
consider the gps receiver system shown below the guaranteed minimum l1 1575 mhz carrier power received by an antenna on
some species of bamboo can grow 250 mmday assume individual cells in the plant are 10 microm longa how long on average
the iridium satellite communication system was designed with a link margin of 16 db and was originally advertised as
an antenna has a radiation pattern function given byfind the main beam position the 3 db beam widths in the principal
a cellular base station is to be connected to its mobile telephone switching office located 5 km away two possibilities
at a distance of 300 m from an antenna operating at 58 ghz the radiated power density in the main beam is measured to
derive equation 1420 by treating the antenna and lossy line as a cascade of two networks whose equivalent noise
a reflector antenna used for a cellular base station backhaul radio link operates at 38 ghz with a gain of 39 db a
consider the replacement of a dbs dish antenna with a microstrip array antenna a micro strip array offers an
a gsm cellular telephone system operates at a downlink frequency of 935-960 mhz with a channel bandwidth of 200 khz and
a pulse radar has a pulse repetition frequency fr 1tr determine the maximum unambiguous range of the radar range
a doppler radar operating at 12 ghz is intended to detect target velocities ranging from 1 to 20 msec what is the