1a Flashcards
Extremely short powerful bursts of radio frequency energy are transmitted
Radar
Radiates RF and receives RF echoes
Antenna system
Isolates and protects receiver when transmitter fires
Duplexer
Converts RF echoes into electrical signals for energy
Receiver
displays target
Indicator
To gather accurate info about the surrounding area
The purpose of a radar system
Radar transmitters operate in what frequency range
X-band between 9300-9500 MHz
The radar transmitter travels at the speed of light which is
161,829 NM/sec
A radar mile =
12.36 microseconds
The orientation of the E wave
Polarization
The time between transmit pulses
Listening time
PRF = Pulse repetition frequency
Pulses per second
The longer the pulse length
The higher average power
This establishes PRF
Master timer/modulator
Transistors designed for high freq & high voltage applications
Microwave Tubes
High power, high freq oscillator also known as transmitter oscillator
Magnetron
Electron resonance magnetron oscillator produces high power outputs in the GHz range
Cavity oscillations
This type of wave tube has high gain, low noise, wideband microwave field
Traveling Wave Tube
This establishes timingof transmitter
PRF Generator
Unterminated transmission line
Pulse Forming Network
Advantages of waveguides include minimum copper loss, minimum dielectric loss and?
Greater power capability
This is caused by interaction between H-field and E-field
Waveguide Propagation
