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59 Cards in this Set
- Front
- Back
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ANALOG
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CONTINUOUS AND VARIABLE ELECTRICAL WAVES THAT REPRESENT AN INFINTE NUMBER OF VALUES.
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PERIOD
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THE TIME TO COMPLETE ONE WAVEFORM CYCLE.
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WAVELENGTH
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THE PHYSICAL EFFECTS OF ANY ELECTROMAGNETIC WAVE OCCURRING OVER A PERIOD OF TIME.
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PHASE
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THE POSITION OF A FEATURE, TYPICALLY A PEAK OR A TROUGH OF THE WAVEFORM.
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RADIO FREQUENCY
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ANY ELECTROMAGNETIC WAVE FREQUENCIES THAT LIE IN THE RANGE EXTENDING FROM BELOW 3 KILOHERTZ TO ABOUT 300 GIGAHERTZ.
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HIGH FREQUENCY
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2MHz TO 29.999MHz
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VERY HIGH FREQUENCY
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30MHz TO 151.975MHz
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ULTRA HIGH FREQUENCY
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225MHz TO 399.975MHz
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SUPER HIGH FREQUENCY
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3GHz TO 30GHz
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EXTREMELY HIGH FREQUENCY
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30GHz TO 300GHz
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MICROWAVE FREQUENCY
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UHF, SHF, AND EHF BANDS
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AUDIO FREQUENCY
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40Hz TO 15000Hz
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CARRIER WAVE
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AN INTERNALLY CREATED ELECTROMAGNETIC WAVE FORM THAT IS A CONSTANT FREQUENCY AND AMPLITUDE.
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INTELLIGENCE WAVE
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USUALLY A LOWER FREQUENCY SIGNAL THAT CONTAINS THE INTELLIGENCE COMPONENTS REQUIRED TO MODULATE A CARRIER WAVE.
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HETERODYNING
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THE PROCESS OF COMBINING TWO OR MORE INPUT SIGNALS IN A NON-LINEAR DEVICE.
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NON-LINEAR DEVICE
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ANY DEVICE WHERE THE RESULTIN CURRENT THROUGH THE DEVICE IS NOT PROPORTIONAL TO THE APPLIED VOLTAGE.
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MODULATION
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A PROCESS IN WHICH THE AMPLITUDE, FREQUENCY, OR THE PHASE OF A CARRIER WAVE IS VARIED IN ACCORDANCE WITH THE WAVEFORM OF INTELLIGENCE WAVE.( THE PROCESS OF MIXING ON THE TRANSMISSION END)
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EFFECTIVE MODULATION
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THE PHYSICAL MANIFESTATION THAT HAS THE SAME RESULT AS ELECTRONIC MODULATION.
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FLYWHEEL EFFECT
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THE INTERACTION OF A CAPACITOR AND AN INDUCTOR IN A SERIES CURCUIT.
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AMPLITUDE MODULATION
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THE MOST BASIC FORM OF MODULATION AND IS USUALLY THE STARTING POINT FOR COMMUNICATION SYSTEMS PRINCIPLES.
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SIDE BANDS
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THE RESULTS OF THE CONVENTIONAL MODULATION PROCESS.
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UPPER SIDE BAND
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THE SUM OF THE CARRIER PLUS INTELLIGENCE; ESSENTIALLY, IT IS THE INTELLIGENCE FREQUENCIES THAT ARE ADDED TO THE CARRIER FREQUENCY.
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LOWER SIDE BAND
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THE DIFFERENCE OF THE CARRIER AND INTELLIGENCE FREQUENCIES; ESSENTIALLY, IT IS THE INTELLIGENCE FREQUENCIES THAT ARE DEDUCTED FROM THE CARRIER FREQUENCY.
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SINGLE SIDEBAND
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THIS IS AMPLITUDE MODULATION APPLIED IN A WAY THAT PUTS ALL OF THE TRANSMIITER POWER INTO ONE SIDEBAND.
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CENTER FREQUENCY
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THE CARRIER FREQUENCY.
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ANGLE MODULATION
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THE ANGLE THAT THE SINE WAVE CARRIER IS VARIED FROM ITS REFERENCE VALUE: THIS FORM OF MODULATION HAS TWO SUB-CATERGORIES: FREQUENCY AND PHASE MODULATION.
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FREQUENCY MODULATION
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WHEN THE INSTANTANEOUS AMPLITUDE OF THE INTELLIGENCE SIGNAL DEVIATES THE INSTANTANEOUS FREQUENCY OF THE CARRIER AND WHEN THE INSTANTANEOUS FREQUENCY OF THE INTELLIGENCE VARIES THE RATE OF FREQUENCY DEVIATIONS.
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PHASE MODULATION
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WHEN THEINSTANTANEOUS AMPLITUDE AND FREQUENCY OF THE INTELLIGENCE SIGNAL DEVIATES THE PHASE OF THE CARRIER SIGNAL AND THE FREQUENCY OF THE INTELLIGENCE VARIES THE RATE OF DEVIATIONS.
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DIGITAL
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ANY METHOD OF STORING, PROCESSING AND TRANSMITTING INFORMATION THROUGH THE USE OF DISTINCT ELECTRONIC OR OPTICAL PULSES THAT REPRESENT 0AND 1.
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BIT
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THE SMALLEST POSSIBLE UNIT OF INFORMATION IN A DIGITAL CODE.
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BYTE
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GENERALLY, 8 BITS MAKE A BYTE.
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OCTET
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AN 8 BIT-SET
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BAUD RATE
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THE MAXIMUM NUMBER OF CHANGES THAT OCCUR PER SECOND IN THE ELECTRICAL STATE OF A COMMUNICATION CIRCUIT.
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FREQUENCY SHIFT KEY
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A FORM OF FM IN WHICH THE MODULATING WAVE SHIFTS THE OUTPUT BETWEEN TWO PREDETERMIND FREQUENCIES.
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PHASE SHIFT KEY
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THE PHASE OF THE CARRIER IS VARIED INSTEAD OF THE FREQUENCY IN DIRECT RELATION TO THE MODULATING SIGNALS AMPLITUDE.
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QUADRATURE AMPLITUDE MODULATION
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A COMBINATION OF AM AND PSK, IN THIS FORM OF MODULATION EACH CHANGE IN AMPLITUDE REPRESENTS A PIECE OF INFORMATION AND EACH SHIFT IN PHASE REPRESNTS A PIECE OF INFORMATION.
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MULTIPLEXING
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TECHNIQUES THAT ALLOW A NUMBER OF SIMULTANEOUS TRANSMISSIONS OVER A SINGLE CIRCUIT.
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PULSE MODULATION
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A METHOD OF MANIPULATING SHORT DURATION PULSES IN DIRECT RELATION TO MODULATING INTELLIGENCE.
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PULSE AMPLITUDE MODULATION
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CHANGING THE AMPLITUDE OF THE PULSES IN DIRECT RELATION TO MODULATING INTELLIGENCE.
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PULSE DURATION MODULATION
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CHANGING THE DURATION OF THE PULSES IN DIRECT RELATION TO MODULATING INTELLIGENCE.
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PULSE POSITION MODULATION
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CHANGING THE POSITION OF THE PULSES IN DIRECT RELATION TO MODULATING INTELLIGENCE.
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PULSE CODE MODULATION
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ENCODING THE PULSES IN DIRECT RELATION TO MODULATING INTELLIGENCE.
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PULSE FORMING NETWORK
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A HIGH VOLTAGE TRANSFORMER WITH WINDINGS THAT ACT AS A SCALABLE SHUNT CAPACITOR.
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REST TIME
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THE TIME AT ZERO BETWEEN THE PULSES
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PULSE RECURRENCE TIME
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THE PULSE TIME PLUS THE REST TIME
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PULSE RECURRENCE FREQUENCY
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IS EQUAL TO ONE DIVIDED BY THE PRT; f=1/t
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TRANSIENT TIME
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THE TIME FOR A SQUARE OR RECTANGULAR WAVEFORM TO GO FROM ZERO TO 100%
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RISE TIME
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THE TIME FOR THE VOLTAGE OR CURRENT TO RISE FROM 10% TO 90% FOR DIGITAL APPLICATIONS OR 0% TO 70% FOR ANALOG APPLICATIONS
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FALL TIME
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THE TIME FOR THE VOLTAGE OR CURRENT TO FALL FROM 90%(OR 70%) TO 10%
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PULSE LENGTH
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THE LENGTH OF A PULSE MEASURED FROM THE 70%(OR 90%) POINTS OF THE RISE AND FALL, MEASURED REFERENCED TO TIME
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SPEED OF LIGHT
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186,282 MILES PER SECOND
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NAUTICAL MILE
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6,076 FEET
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RADAR MILE
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IS EQUAL TO THE SPEED OF LIGHT(186,282 MILES PER SECOND)
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ELECTROMAGNETIC WAVE
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A WAVE OF ENERGY THAT HAS A FREQUENCY WITHIN THE ELECTROMAGNETIC SPECTRUM AND IS BROADCASTED AS PERIODIC DISTURBANCE OF THE ELECTROMAGNETIC FIELD WHEN AN ELECTRIC CHARGE OSCILLATES OR ACCELERATES.
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ELECTROMAGNETIC RADIATION
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RADIATION MADE UP OF OSCILLATING ELECTRIC AND MAGNETIC FIELDS AND BROADCASTED AT THE SPEED OF LIGHT(186,282 MILE PER SECOND)
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ELECTROMAGNETIC INTRUSION
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THE INTENTIONAL INSERTION OF ELECTROMAGNETIC ENERGY INTO TRANSMISSION PATHS IN ANY MANNER, WITH THE OBJECTIVE OF DECEIVING OPERATORS OR OF CAUSING CONFUSION. A.K.A ELECTRONIC WARFARE.
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ELECTROMAGNETIC PULSE
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THE ELECTROMAGNETIC RADIATION FROM A NUCLEAR EXPLOSION CAUSED BY COMPTON-RECOIL ELECTRONS AND PHOTOELECTRONS FROM PHOTONS SCATTERED IN THE MATERIALS OF THE NUCLEAR DEVICE OR IN A SURROUNDING MEDIUM. *A BROADBAND, HIGH INTENSITY, SHORT-DURATION BURST OF ELECTROMAGNETIC ENERGY.
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ELECTROMAGNETIC SPECTRUM
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THE ENTIRE RANGE OF ALL ELECTROMAGNETIC WAVES ARRANGED ACCORDING TO FREQUENCY AND WAVELENGTH.
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EMI
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ANY ELECTROMAGNETIC DISTURBANCE THAT INTERRUPTS, OBSTRUCTS,OR OTHERWISE DEGRADES OR LIMITS THE EFFECTIVE PERFORMANCE OF ELECTRONICS/ELECTRICAL EQUIPMENT
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