2G — second generation of wireless communications systems
3G — third generation
A/D — analog-to-digital
AC — alternating current
ACPR — adjacent-channel power ratio
ADC — analog-to-digital converter
AGC — automatic gain control
AMPS — advanced mobile phone system
ASIC — application-specific integrated circuit
ASK — amplifier shift keying
ASP — application service provider
ATM — asynchronous transfer mode
AWGN — additive white gaussian noise
BER — bit error rate
BPSK — binary phase shift keying
CCRR — co-channel rejection ratio
CDMA — code-division multiple access
CDPD — cellular digital packet data
CMOS — complementary metal-oxide semiconductor
CMRR — common-mode rejection ratio
CPU — central processing unit system
CW — continuous wave
DC — direct current
dBc — dB relative to the carrier power
DCS — distributed communications system or digital cellular system
DDS — direct digital synthesis
DECT — digital european cordless telephone
DSP — digital signal processor
DUT — device under test
EEPROM — electrically erasable programmable read-only memory
EMC — electromagnetic compatibility
EMI — electromagnetic interference
ESD — electrostatic discharge
ETSI — european telecommunications standards institute
FCC — federal communications commission
FDD — frequency division duplex
FEC — forward error corrections
FER — frame error rate
FET — field-effect transistor
FHSS — frequency-hopping, spread spectrum
FIFO — first-in, first-out
FIR — finite impulse response
FM — frequency modulation
FSK — frequency shift keying
GaAs — gallium arsenide
GaN — gallium nitride
GFSK — gaussian filtered frequency shift keying
GHz — gigahertz
GMSK — gaussian minimum shift keying
GPIB — general-purpose interface bus
GPRS — general packet radio service
GPS — global positioning system
GSM — global system for mobile communications
HBT — heterojunction bipolar transistor
HEMT — high electron mobility transistor
Hz — Hertz
HSCSD — high-speed circuit-switched data
HTTP — hypertext transfer protocol
I and Q — in-phase and quadrature
I/O — input/output
IC — integrated circuit
IF — intermediate frequency
IM — intermodulation
IMD — intermodulation distortion
InGaP — indium gallium phosphide
InP — indium phosphide
IP — internet protocol
IR — infrared
ISM — industrial, scientific, and medical
kB — kilobyte
LDMOS — laterally diffused metal oxide silicon
LMDS — local multipoint distribution service
LNA — low-noise amplifier
LO — local oscillator
LOS — line of sight
LPF — low-pass filter
LSI — large scale integration
LTCC — low-temperature co-fired ceramic
MDS — multipoint distribution systems
MHZ — megahertz
MMDS — multichannel multipoint distribution service
MMIC — monolithic microwave integrated circuit
MOSFET — metal-oxide semiconductor field-effect transistor
MS/s — million of samples per second
NTC — negative temperature coefficient
OEM — original equipment manufacturer
OXCO — oven controlled crystal oscillator
PA — power amplifier
PAE — power added efficiency
PAR — peak-to-average ratio
PCB — printed circuit board
PCM pulse-code modulation
PCN — personal communications network
PCS — personal communications system
PDA — personal digital assistant
PDC — pacific digital cellular
PECL — positive emitter-coupled logic
PHEMT — pseudomorphic high-electron-mobility transistor
PLL — phase-locked loop
PSK — phase shift keying
QAM - quadrature amplitude modulation
QASK — quadrature amplitude shift keying
QPSK — quadrature phase shift keying
RFI — radio frequency interference
RFIC — radio frequency integrated circuit
RISC — reduced instruction set computing
ROM — read-only memory
SDH — synchronous digital hierarchy
SCM — signal code modulation
SiGe — silicon-germanium
SMR — specialized mobile radio
SMS — short messaging service
SMT — surface-mount technology or surface-mount toroidal
SNR — signal-to-noise ratio
SOIC — small-outline integrated circuit
SONET — synchronous optical network
SPDT — single-pole double-throw
SSB — single side band
SSPA — solid state power amplifiers
TCP — transmission control protocol
TDD — time division duplex
TDMA — time-division multiple access
TETRA — trans european trunked radio
TTL — transistor — transistor logic
TXCO — temperature-compensated crystal oscillator
UART — universal asynchronous receiver transmitter
UHF — ultra high frequency
UMTS — universal mobile telecommunications service
PVCO — voltage-controlled oscillator
VCXO — voltage-controlled crystal oscillator
VOFDM — vector orthogonal frequency division multiplexing
VSAT — very small aperture terminal (satellite service)
VSB — vestigial side band
VSWR — voltage standing wave ratio
WAP — wireless application protocol
W-CDMA — wideband code-division multiple access
WLAN — wireless local area network

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