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224 Cards in this Set
- Front
- Back
- 3rd side (hint)
Multiplexing
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Tracking A/D converter |
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Demulyiplexing |
Separating data from a single line to different outputs |
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First concept of computers |
Used vacuum tubes that were unreliable and expensive |
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3 categories of computers |
Macro, mini, micro |
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Microprocessor made of |
Input, control, memory, arithmetic logic unit (ALU), output |
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Control |
Used for synchronizing processes |
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ALU |
Calculates circuitry of computer |
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Memory contains |
Data, instructions. Information |
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Bus |
Path for info or data groups by function |
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Status flag register |
Indicates status of ALU |
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General purpose registers |
Used for temporary storage |
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Address refisters |
Access location of data and enable a specific I/O port |
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Program counter |
Has address of next instruction to be executed |
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Smallest unit of data microprocessor rexognies |
Bit |
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Address bus |
Determines how much memory can be addressed |
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Staris |
Condition of ALU |
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When control section directs a word to memory... |
An address determines where it will go |
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Microprocessors are generally used by... |
Small businesses |
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Basic sections of a computer |
Control, input, output |
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Two primary forms of memory |
ROM & RAM |
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Data stored in ROM is called |
Firmware |
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Static RAM is made from |
Flip flops |
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Dynamic RAM is made from |
Capacitors |
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Extended memory |
All memory beyond original 1M |
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XMS |
Extended memory specification |
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What was used before XMS |
Expanded memory specification (EMS) |
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Why is EMS not accessed same as conventional and XMS? |
It cannot be directly accessed by the processor |
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Caches ste |
Extremely fast RAM |
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L1 cache |
Internal to processor |
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L2 cache |
External to processor |
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Personal computer contains |
Mouse, keyboard, monitor, and system unit |
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System unit is primary system component and contains |
CPU, power supply, memory and ROM BIOS |
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Operating system is... |
Software, main program Used is kernel, purpose is to manage operation of computer |
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System case most important functions |
Structure, protection, cooling |
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Parts of case |
Chassis and enclosure |
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What case has best cooling |
Full tower |
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Why is mini tower good? |
Small and minimal space taken up on desk |
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UNIX |
Network operating system that has been modified by different companies |
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BIOS |
Set of instruction that tells CPU how to access devices that let it cpunicTe with rest of world |
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Purpose of CPU |
Preform system's calculating and processing |
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CMOS used for clock chip because |
Takes little power to operate it |
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Interrupt |
Suspension of a process going on in CPU |
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Important characteristics of bus: |
Sore an width |
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Local bus |
Bus that allows peripherals to connect to processor bus |
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Universal Serial Bus (USB) |
Can include up to 127 devices at once; peripherals can be connected w/o having to shut down/restart and individual device don't need individual sets of system resources |
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Software application |
Set of instructions for accomplishing a Sequence of actions |
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Software application categories |
Productivity, utility and communication |
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Configuration of typical Ethernet jack |
8-pin |
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Client/server relationship involves |
Resource sharing and data flow control |
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If client account has full rights to a network client limitations are |
Minimal |
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Photons |
Light form of electromagnetic radiation containing bits of massless energy |
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Light is |
reflected, refracted and absorbed by all materials |
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Refraction |
Benson of a beam of light as it travels from one medium to another due to change in speed of light |
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Law of relfectance |
Angle of relfectance=angle of incidence |
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Fiber optic systems contain |
Transmitter, transmission and receiver sections |
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LEDs and lasers |
Capable of light emissions in visible and infrared ranges (lasers also ultraviolet ranges) |
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PIN photodiode and APD's |
Most common employed in fiberoptics |
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PIN photodiodez |
Have increased f response it lower quantum efficiency |
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APDs |
Have other responsibility and efficiency but need higher V bias |
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Optical detector terms |
Responsitivity, response time, numerical aperture, quantum efficiency, dark I |
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Dark current |
Current produced by photodiode when no V applied |
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Attenuation |
Ability to maintain integrity of signal; measure in decibels/kilometers |
Loss |
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Attenuation is affected by |
Absorption, scattering an micro end losses |
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Single mode optical fiber |
Only one light path |
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Multimodal grade index optical fiber |
(Or multimode step index) allows several light paths |
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Multimode step index |
Not good for high speed or log distance |
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Signal processing includes |
Amplification, filtering, reshaping, modulation/demodulation, multiplexing/demultiplexing |
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Intensity modulation |
Modulated signal transmitted by ranging intensity of light wave |
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Misalignment types |
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Heterojunction LEDs |
Confine and direct light better w/ a different type of material on at least one side of PN |
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Quality measurements |
Analog SNR, digital BER |
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Quality measurements |
Analog SNR, digital BER |
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RADAR |
RAdio Detection And Ranging |
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RF reflected from object gives |
Bearing, range, elevation and velocity |
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RF reflected from object gives |
Bearing, range, elevation and velocity |
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Echo |
Reflected energy from object |
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RF reflected from object gives |
Bearing, range, elevation and velocity |
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Echo |
Reflected energy from object |
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Line of sight length |
Range |
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RF reflected from object gives |
Bearing, range, elevation and velocity |
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Echo |
Reflected energy from object |
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Line of sight length |
Range |
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Surface search radar |
Cannot supply altitude |
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RF reflected from object gives |
Bearing, range, elevation and velocity |
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Echo |
Reflected energy from object |
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Line of sight length |
Range |
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Surface search radar |
Cannot supply altitude |
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Two types of radar transmissions |
Pulsed and continuous wave (CW) |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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Good transmission line |
Has max transfer with minimum loss |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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Good transmission line |
Has max transfer with minimum loss |
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Transmission line properties |
Resistive loss, induction loss, radiation loss, capacitive loss |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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Good transmission line |
Has max transfer with minimum loss |
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Transmission line properties |
Resistive loss, induction loss, radiation loss, capacitive loss |
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Copper loss |
Due to resistance(especially in long lines) |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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Good transmission line |
Has max transfer with minimum loss |
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Transmission line properties |
Resistive loss, induction loss, radiation loss, capacitive loss |
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Copper loss |
Due to resistance(especially in long lines) |
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Radiation loss |
Portion of electric energy lost to the atmosphere (not object nearby) |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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Good transmission line |
Has max transfer with minimum loss |
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Transmission line properties |
Resistive loss, induction loss, radiation loss, capacitive loss |
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Copper loss |
Due to resistance(especially in long lines) |
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Radiation loss |
Portion of electric energy lost to the atmosphere (not object nearby) |
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Characteristic impedance of transmission line |
Distributes inductance and capacitance |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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Good transmission line |
Has max transfer with minimum loss |
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Transmission line properties |
Resistive loss, induction loss, radiation loss, capacitive loss |
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Copper loss |
Due to resistance(especially in long lines) |
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Radiation loss |
Portion of electric energy lost to the atmosphere (not object nearby) |
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Characteristic impedance of transmission line |
Distributes inductance and capacitance |
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Skin wffect |
At hight f's electrons go to outer surface |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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Good transmission line |
Has max transfer with minimum loss |
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Transmission line properties |
Resistive loss, induction loss, radiation loss, capacitive loss |
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Copper loss |
Due to resistance(especially in long lines) |
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Radiation loss |
Portion of electric energy lost to the atmosphere (not object nearby) |
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Characteristic impedance of transmission line |
Distributes inductance and capacitance |
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Skin wffect |
At hight f's electrons go to outer surface |
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Dielectric loss |
Due to capacitance formed between transmission lines |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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Good transmission line |
Has max transfer with minimum loss |
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Transmission line properties |
Resistive loss, induction loss, radiation loss, capacitive loss |
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Copper loss |
Due to resistance(especially in long lines) |
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Radiation loss |
Portion of electric energy lost to the atmosphere (not object nearby) |
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Characteristic impedance of transmission line |
Distributes inductance and capacitance |
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Skin wffect |
At hight f's electrons go to outer surface |
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Dielectric loss |
Due to capacitance formed between transmission lines |
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Waveguides are |
Manufactured from conductive materials and may be rectangular, circular, or elliptical |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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Good transmission line |
Has max transfer with minimum loss |
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Transmission line properties |
Resistive loss, induction loss, radiation loss, capacitive loss |
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Copper loss |
Due to resistance(especially in long lines) |
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Radiation loss |
Portion of electric energy lost to the atmosphere (not object nearby) |
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Characteristic impedance of transmission line |
Distributes inductance and capacitance |
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Skin wffect |
At hight f's electrons go to outer surface |
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Dielectric loss |
Due to capacitance formed between transmission lines |
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Waveguides are |
Manufactured from conductive materials and may be rectangular, circular, or elliptical |
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a dimension |
f range |
In waveguides |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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b dimension |
Power capability |
In waveguides |
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Good transmission line |
Has max transfer with minimum loss |
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Transmission line properties |
Resistive loss, induction loss, radiation loss, capacitive loss |
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Copper loss |
Due to resistance(especially in long lines) |
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Radiation loss |
Portion of electric energy lost to the atmosphere (not object nearby) |
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Characteristic impedance of transmission line |
Distributes inductance and capacitance |
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Skin wffect |
At hight f's electrons go to outer surface |
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Dielectric loss |
Due to capacitance formed between transmission lines |
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Waveguides are |
Manufactured from conductive materials and may be rectangular, circular, or elliptical |
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a dimension |
f range |
In waveguides |
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Discharge time of Pulse Forming Network (PFN) |
PW of radar |
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b dimension |
Power capability |
In waveguides |
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Antenna |
A conductor or group of conductors used for radiating electromagnetic energy transferred by the transmission line into space |
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Good transmission line |
Has max transfer with minimum loss |
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Transmission line properties |
Resistive loss, induction loss, radiation loss, capacitive loss |
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Copper loss |
Due to resistance(especially in long lines) |
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Radiation loss |
Portion of electric energy lost to the atmosphere (not object nearby) |
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Characteristic impedance of transmission line |
Distributes inductance and capacitance |
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Skin wffect |
At hight f's electrons go to outer surface |
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Dielectric loss |
Due to capacitance formed between transmission lines |
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Waveguides are |
Manufactured from conductive materials and may be rectangular, circular, or elliptical |
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a dimension |
f range |
In waveguides |
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Most common antenna type for microwave |
Horn |
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Horn antenna |
Has power gain and matches waveguide impedance to space |
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Parabolic reflector antenna |
Produce narrow beam in both planes |
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Parabolic reflector antenna |
Produce narrow beam in both planes |
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Orange peel parabolic reflector |
Narrow horizontal and wide vertical |
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Parabolic reflector antenna |
Produce narrow beam in both planes |
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Orange peel parabolic reflector |
Narrow horizontal and wide vertical |
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Cavity resonator |
Is a parallel LC circuit |
Resonator... Resonance... Resonance frequency |
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Special vacuum Tubes |
Klystron and magnetron |
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Special vacuum Tubes |
Klystron and magnetron |
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Klystron |
Buncher grids San cavity cause electrons to accelerate and decelerate |
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Special vacuum Tubes |
Klystron and magnetron |
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Klystron |
Buncher grids San cavity cause electrons to accelerate and decelerate |
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Magnetrom |
Uses resonant cavities to produce oscillators; causes electrons to flow in a curved path |
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Special vacuum Tubes |
Klystron and magnetron |
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Klystron |
Buncher grids San cavity cause electrons to accelerate and decelerate |
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Magnetrom |
Uses resonant cavities to produce oscillators; causes electrons to flow in a curved path |
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EMC can be divide to: |
Denials and deception and each into passive and active |
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Special vacuum Tubes |
Klystron and magnetron |
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Klystron |
Buncher grids San cavity cause electrons to accelerate and decelerate |
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Magnetrom |
Uses resonant cavities to produce oscillators; causes electrons to flow in a curved path |
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EMC can be divide to: |
Denials and deception and each into passive and active |
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Active denial ECM |
Electronic jamming devices used to produce signals to prevent tracking and detection of targets |
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Type 1 cooling system |
SW/DW heat exchange with SW/DW heat exchange standby |
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Type 1 cooling system |
SW/DW heat exchange with SW/DW heat exchange standby |
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Type 2 cooling system |
SW/DW heat exchange with CW/DW heat exchange standby |
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Type 1 cooling system |
SW/DW heat exchange with SW/DW heat exchange standby |
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Type 2 cooling system |
SW/DW heat exchange with CW/DW heat exchange standby |
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Type 3 cooling sustem |
CW/DW Heat exchange with a CW/DW heat exchange standby |
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Type 1 cooling system |
SW/DW heat exchange with SW/DW heat exchange standby |
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Type 2 cooling system |
SW/DW heat exchange with CW/DW heat exchange standby |
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Type 3 cooling sustem |
CW/DW Heat exchange with a CW/DW heat exchange standby |
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Minimum range of radar |
Determined by receiver recovery time and pulse width |
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Type 1 cooling system |
SW/DW heat exchange with SW/DW heat exchange standby |
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Type 2 cooling system |
SW/DW heat exchange with CW/DW heat exchange standby |
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Type 3 cooling sustem |
CW/DW Heat exchange with a CW/DW heat exchange standby |
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Minimum range of radar |
Determined by receiver recovery time and pulse width |
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Radar accuracy affected most by |
Radar system resolution |
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Type 1 cooling system |
SW/DW heat exchange with SW/DW heat exchange standby |
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Type 2 cooling system |
SW/DW heat exchange with CW/DW heat exchange standby |
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Type 3 cooling sustem |
CW/DW Heat exchange with a CW/DW heat exchange standby |
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Minimum range of radar |
Determined by receiver recovery time and pulse width |
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Radar accuracy affected most by |
Radar system resolution |
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Range resolution |
Deprecate multiple targets on same bearing (determined by PW) |
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Bearing resolution |
Separate multiple targets on same range determined by Beam width |
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Superheterodyne receiver |
Most used |
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Superheterodyne receiver |
Most used |
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IF produced by |
Mixer (first detector) |
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Superheterodyne receiver |
Most used |
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IF produced by |
Mixer (first detector) |
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Video produced by |
Video detector (second detector) |
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Superheterodyne receiver |
Most used |
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IF produced by |
Mixer (first detector) |
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Video produced by |
Video detector (second detector) |
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What is this? |
Tracking A/D converter |
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What is this? |
Binary weighted input D/A converter |
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What is this |
Stair step A/D converter or ramp converter |
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What is this |
R/2R D/A or ladder or scaling |
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