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Acronym / Symbol

Meaning / Definition


°C Degrees Celsius
°F Degrees Fahrenheit
n Efficiency
µwave, µWave, µW Microwave
ACM AC Module
ACPR Adjacent channel power ratio - measurement of power amplifier linearity
ADC Analog to Digital Converter, Analog-to-Digital Converter
AGC Automatic Gain Control
AM Arc Module, also Amplitude Modulation
APS Antenna positioning system
AT Acceptance Test
ATP Acceptance Test Procedure
AWG American Wire Gauge


BER Bit Error Rate
BM Block Module, Block Up-converter Module
BOM Bill of Materials, List of Materials
BPF Band-Pass Filter
BR Beacon Receiver
BRF Band-Reject Filter
BSS Broadcasting Satellite Service
BUC Block Up-converter, aka Block Bpconverter
BW Bandwidth


C C-band, C band
C-Band 4 to 8 GHz
CATV Community access television - "Cable"
CCTWT Coupled Cavity TWT, Coupled Cavity Traveling Wave Tube
CM Control Module
COTS Commercial off-the-shelf
DAC Digital to Analog Converter, Digital-to-Analog Converter


dB Decibel
dBc Decibel Relative to Carrier, dB below carrier
dBm Decibel relative to 1 mW (1mW)
DBS Direct-Broadcast Satellite
DBS DBS-band, DBS band
DBS-Band 12.2 to 12.7 GHz
DBS178 Option for DBS-band, 17.3-17.8 GHz
DBS184 Option for DBS-band, 17.3-18.4 GHz
DBSTV Direct-Broadcast Satellite Television
dBW Decibels relative to 1 watt (1W)
DSNG Digital Satellite News Gathering
DSS Digital Satellite System
DTH Direct-to-Home
DTHTV Direct-to-Home Television
DUT Device Under Test


Ea Anode Voltage
Ea- Negative Anode Voltage
Ea+ Positive Anode Voltage
Eb Electron Beam Voltage, aka Cathode Voltage
Eb1 Collector 1 Voltage
Eb2 Collector 2 Voltage
Eb3 Collector 3 Voltage
Eb4 Collector 4 Voltage
Ef Filament Voltage, also know as Heater voltage
Eff Efficiency
Eh Heater voltage
EIK Extended Interaction Klystron
Ek Cathode Voltage
EM Electromagnetic
EMC Electromagnetic compatibility
EMI Electromagnetic interference
EPC Electronic Power Conditioner
ESS Environmental Stress Screening
ETSI European television standards institute


F Noise Figure
FA First Article
FAT First Article Test
FET Field-effect transistor
FGI Finished Goods Inventory
FILT Filter, either air or RF
FM Fan Module, also Frequency Modulation
FSS Fixed Satellite Service - geosynchronous communications satellites
FWD Forward, Forward Coupler
FWD/REV Dual Forward/Reverse Coupler


G-1dB 1 dB Compression Gain
GaAs Gallium Arsenide
GaN Gallium Nitride
GaN't GaN Cannot
GEO Geostationary earth orbit
GHz Gigahertz - 1,000,000,000 cycles per second
GLIN Linear Gain
GLSG Large Signal Gain
GNSS Global Navigation Satellite System
GPS Global Positioning System
GSO Geo-synchronous Orbit
GSSG Small Signal Gain


H-POL Horizontal Polarization
HDTV High-Definition Television
HF Harmonic Filter, High Frequency
HPA High-Power Amplifier
HPF High Pass Filter
HPM High-power Microwave
HTS High Throughput Satellites - geosynchronous communications satellites
HV High Voltage
HVM High Voltage Module
HVPS High Voltage Power Supply
Hz Hertz - unit of cycles-per-second


I/O Input/Output
Ia Anode Current
Ia- Negative Anode Current
Ia+ Positive Anode Current
Ib1 Collector 1 Current
Ib2 Collector 2 Current
Ib3 Collector 3 Current
Ib4 Collector 4 Current
ICD Interconnect Diagram
IEEE Institute of Electrical and Electronics Engineers
IESS Intelsat Earth Station Standards
IF Intermediate Frequency
If Filament Current, aka Heater Current
IF Intermediate Frequency
Ih Heater Current
Ik Cathode current
IM Intermodulation
IMD Intermodulation Distortion
IMD26 -26 dBc Intermodulations
IMD30 -30 dBc Intermodulations
IMP Intermodulation Products
IMR Intermodulation Ratio
IP3 3rd order Intercept Point
ISO Isolator
ITAR International Traffic in Arms Regulations


K-(f) Type K Female Connector
K-(m) Type K Male Connector
K-f Type K Female Connector
K-m Type K Male Connector
Ka Ka-band, Ka band
Ka-Band 26.5 to 40 GHz
Ka2730 Tango Wave Option for Ka-band, 27-30 GHz
Ka2830 Tango Wave Option for Ka-band, 28-30 GHz
Ka2931 Tango Wave Option for Ka-band, 29-31 GHz
Ka3031 Tango Wave Option for Ka-band, 30-31 GHz
kHz Kilohertz - 1,000 cycles per second
KPA Klystron Power Amplifier
Ku Ku-band, Ku band
Ku-Band 12 to 18 GHz
Ku1275 Option for extended Ku-band, 12.75-14.5 GHz
Ku1300 Option for Ku-band, 12.75-13.25 GHz
Ku1325 Option for Ku-band, 13.0-13.25 GHz
Ku1400 Option for Ku-band, 14-14.5 GHz


L L-band, L band
L-Band 1 to 2 GHz
LAN Local Area Network
LINFFD Feed Forward Linearizer
LINPD Pre-distortion Linearizer
LNA Low-Noise Amplifier
LOS Line-of-Sight
LPF Low Pass Filter
LRET Return Loss
LS Large Signal
LSG Large Signal Gain
LTE Long Term Evolution


m Slope
MHz Megahertz - 1,000,000 cycles per second
MLP Maximum Linear Power
MMDS Multichannel Multipoint Distribution System
MMIC Monolithic Microwave Integrated Circuit
MMW Millimeter Wave
mmWave Millimeter Wave
MOD Modulation
MPM Microwave Power Module
ms Millisecond - 1/1000 of a second
MTBF Meant Time Between Failure
MTTR Mean Time to Repair
mV Millivolt
mw Milliwatt - 1/1000 of a Watt
MW Microwave


N-(f) Type N Female Connector
N-(m) Type N Male Connector
N-f Type N Female Connector
N-m Type N Male Connector
NF Noise Figure
NPD Noise Power Density
NPR Noise Power Ratio
NPR19 -19 dBc Noise Power Ratio
NPR20 -20 dBc Noise Power Ratio
NRE Non-Recurring Cost
NTE Not to Exceed

O - P

OCXO Ovenized Crystal Oscillator, Oven Controlled Crystal Oscillator
P-1dB 1 dB Compression Power
P1dB Power at one-dB Gain Compression
PA Power Amplifier
PA17 Tango Wave Power Amplifier, 17 Series
PA17-Ka120 Tango Wave 120W Ka-band Power Amplifier
PA17-Ka120P Tango Wave 120W Ka-band Peak Power Amplifier
PA17-Ka150 Tango Wave 150W Ka-band Power Amplifier
PA17-Ka150P Tango Wave 150W Ka-band Peak Power Amplifier
PA17-Ka175 Tango Wave 175W Ka-band Power Amplifier
PA17-Ka175P Tango Wave 175W Ka-band Peak Power Amplifier
PA17-Ka250P Tango Wave 250W Ka-band Peak Power Amplifier
PA17-Ku400P Tango Wave 400W Ku-band Peak Power Amplifier
PA20 Tango Wave Power Amplifier, 20 Series
PA20-DBS750 Tango Wave 750W DBS-band Power Amplifier
PA20-DBS750P Tango Wave 750W DBS-band Peak Power Amplifier
PA20-Ka250 Tango Wave 250W Ku-band Power Amplifier
PA20-Ka350P Tango Wave 350W Ku-band Peak Power Amplifier
PA20-Ka500P Tango Wave 500W Ku-band Peak Power Amplifier
PA20-Ka550P Tango Wave 550W Ku-band Peak Power Amplifier
PA20-Ku1250P Tango Wave 1250W Ku-band Peak Power Amplifier
PA20-Ku400 Tango Wave 400W Ku-band Power Amplifier
PA20-Ku750 Tango Wave 750W Ku-band Power Amplifier
PA20-Ku750P Tango Wave 750W Ku-band Peak Power Amplifier
PAE Power-Added Efficiency
PB Power BUC
PCM Power Processing Control Module
PD Power Density
Peak High Efficiency mode of operation of TWT which limits CW power
PF Power Factor
PFC Power Factor Corrector
Pi Input Power, Power In
PLIN Linear Power
PO Output Power, Power Out
PPM Power Processing Module
PPV Pay-Per-View (PPV) is a type of pay television service
PREF Reference Power
PREF Reference Power
PS Power Supply
PSAT Sat power, Saturated Power
PSAT Sat power, Saturated Power


Q Q-band, Q band
Q-Band 30 to 50 GHz
QC Quality Control
QDC Quick Connect Waveguide, Quick Disconnect Waveguide
QDC28 WR-28 Quick Connect Waveguide, Quick Disconnect Waveguide
QDC34 WR-34 Quick Connect Waveguide, Quick Disconnect Waveguide
QDC62 WR-62 Quick Connect Waveguide, Quick Disconnect Waveguide
QDC75 WR-75 Quick Connect Waveguide, Quick Disconnect Waveguide
QT Qualification Test, Qual Test
QTP Qualification Test Procedure, Qual Test Procedure


RCV-REJ Receive Reject Filter
RDBS Reverse DBS-band
REF 10 MHz Reference
REV Reverse, Reverse Coupler
RF Radio Frequency
RFD RF Device
RFIC Radio Frequency Integrated Circuit
RFM RF Module
Rx Receive
Rx Receive


S S-band, S band
S-Band 2 to 4 GHz
S11 S-parameter, VSWR, Port 1
S12 S-parameter, Insertion Loss, Port 2-to-Port 1
S21 S-parameter, Insertion Loss, Port 1-to-Port 2
S22 S-parameter, VSWR, Port 2
SATCOM Satellite Communications
SMA-(f) Type SMA Female Connector
SMA-(m) Type SMA Male Connector
SMA-f Type SMA Female Connector
SMA-m Type SMA Male Connector
SNG Satellite News Gathering
SOTM SATCOM-on-the-Move
SR Spectral Re-growth, aka Spectral Regrowth
SR30 -30 dBc Spectral Re-growth, aka Spectral Regrowth
SS Small Signal
SSA Solid-State Amplifier
SSB Single-Sideband
SSG Small-Signal Gain
SSPA Solid-State Power Amplifier
SSPB Solid-State Power BUC
STD-Ku Standard Ku-band, 13.75-14.5 GHz
SWaP Size, Weight and Power
SWaP-C Size, Weight and Power and Cost
SwaPe Size, Weight Power and Efficiency


T/R Transmit Receive
Tango Wave Tango Wave, www.tango-wave.com
TCXO Temperature Controlled Crystal Oscillator
TFMH High Voltage Transformer
TFMR Transformer
TR, T/R Transmit Receive
Tw Tango Wave
TWT Traveling Wave Tube
TWTA Traveling Wave Tube Amplifier
Tx Transmit
Tx, TX Transmit

U - V

U-Band 40 to 60 GHz
UIM User Interface Module
UPC Uplink Power Control
V V-band, V band
V-Band 50 to 75 GHz
V-POL Vertical Polarization
VA Volt-Amps
VCO Voltage-Controlled Oscillator
VCXO Voltage-Controlled Crystal Oscillator
VOD Video on Demand
VSAT Very Small Aperture Terminal
VSWR Voltage Standing Wave Ratio

W - X

W W-band, W band
W-Band 75 to 110 GHz
W/G Waveguide
WGM Waveguide Module
WIP Work In Process
WLAN Wireless Local Area Network
WR-28 WR-28 Waveguide Cover Flange
WR-28G WR-28 Waveguide Grooved Flange, Gasketed Flange
WR-34 WR-34 Waveguide Cover Flange
WR-34G WR-34 Waveguide Grooved Flange, Gasketed Flange
WR-62 WR-62 Waveguide Cover Flange
WR-62G WR-62 Waveguide Grooved Flange, Gasketed Flange
WR-75 WR-75 Waveguide Cover Flange
WR-75G WR-75 Waveguide Grooved Flange, Gasketed Flange
WR28 WR-28 Waveguide Cover Flange
WR28G WR-28 Waveguide Grooved Flange, Gasketed Flange
WR34 WR-34 Waveguide Cover Flange
WR34G WR-34 Waveguide Grooved Flange, Gasketed Flange
WR62 WR-62 Waveguide Cover Flange
WR62G WR-62 Waveguide Grooved Flange, Gasketed Flange
WR75 WR-75 Waveguide Cover Flange
WR75G WR-75 Waveguide Grooved Flange, Gasketed Flange
wrtc with Respect to Cathode
wrtg with Respect to Ground
WVG Waveguide
X X-band, X band
X-Band 8 to 12 GHz
XMIT Transmit