|
rad
|
radian
|
Unit of angle. There are
2pi radians in 360 degrees. Rad can also mean “bad”
to a young engineer, which of course means “good”.
|
|
radar
|
radio detection and ranging
|
|
| RBW |
resolution
bandwidth |
An
oscilloscope
term. |
| RC
|
resistance
x capacitance
|
Generally a time constant,
farads x ohms = seconds.
|
| RCS |
radar
cross-section |
|
| R&D |
Research
and development |
Alternatively,
remorse and disappointment. |
| RETMA |
Radio
Electronics Television Manufacturers Association |
Defunct
group that developed standardized component values that are
still used today. |
|
RF
|
radio frequency
|
As in “what’s
the frequency, Dan Rather?"
|
| RFIC |
radio frequency integrated circuit |
The silicon cousin of MMIC. |
| RFID |
radio
frequency identification |
What
Walmart uses to track inventory. |
| RHCP |
right-hand
circularly polarized |
Circular
polarization is often used in communications systems. |
| RIE |
reactive
ion etching |
A method
of dry etching. |
| RKE |
remote
keyless entry |
RF
device that opens your car door. |
|
RL
|
return loss
|
Magnitude of S11 in decibels.
|
| RMS |
root-mean-square |
Often
used to evaluate phase and amplitude errors over many states. |
|
RN
|
noise resistance
|
|
| RPN |
residual
phase noise |
|
| RSS |
root-sum-square |
Used in evaluating the composite error of many contributors, as opposed to worst-case. |
| RTA |
rapid
thermal annealing |
|
| RTD |
resonant
tunneling diode, resistor
temperature device or detector |
One
is a new semiconductor used in MMW, the other is like an expensive
thermistor |
| RTOL |
room
temperature operating life |
A reliability
test that takes a very long time! |
|
RX
|
receive
|
An abbreviation sometimes
used for receive.
|
