|
H
|
Henry
|
A unit of inductance,
named after a dead American, Joseph
Henry.
|
| HAST |
highly-accelerated
life test |
The
"pressure cooker" of qual tests! |
|
HBT
|
hetero-junction bi-polar
transistor
|
A good competitor to
PHEMT for C-band and below, and required only one power supply
polarity.
|
|
HEMT
|
high electron mobility
transistor
|
Developed in the 1990s,
provides better microwave performance compared to MESFETs.
|
| HEPA |
high
efficiency particulate air (filter) |
The
type of filters used to filter out particles down to 0.3 micron
in a clean room. |
|
HEXFET
|
hexagonal field-effect
transistor
|
A trademark of International
Rectifier for their MOSFET line.
|
| HFET |
heterostructure
field-effect transistor |
|
| HFSS |
High-Frequency
Structural Simulator |
Ansoft's
3D EM simulation tool. |
| HPA |
high-power
amplifier |
|
|
HPIB
|
Hewlett Packard instrument
bus
|
Too
late to rename it "Agilent instrument bus" |
|
HPF
|
high pass filter
|
A two-port network that
rejects signals below a certain frequency band.
|
| HPIN |
horizontal
PIN diode |
|
| HPBW |
half-power
beamwidth |
Used
to describe an antenna pattern. |
| HPM |
high-power
microwave |
"Danger,
Will Robinson!" |
| H-pol |
horizontal
polarization |
|
| HSM |
high-side
mixing |
Refers
to the condition that the LO frequency is above the RF frequency. |
| HTCC |
high-temperature
co-fired ceramic |
A method
of fabricating circuit traces embedded in ceramic. |
| HTS |
high-temperature
superconductor |
|
|
Hz
|
Hertz
|
Unit of cycles-per-second,
named after a dead German. Not to be confused with the dead
Austrian who started that rental car company.
|
