"A"
"B"
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P",
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z"
Previous section of "G" terms and definitions.
GRID BIAS. A constant fixed potential applied between the grid and the cathode of a vacuum tube to
establish an operating point.
GRID CURRENT. The current that flows in the grid-to-cathode circuit of a vacuum tube.
GRID-GAP TUNING. A method of changing the center frequency of a resonant cavity by physically
changing the distance between the cavity grids.
GRID-LEAK BIAS. A self-bias provided by a high resistance connected across the grid capacitor or
between the grid and cathode.
GROUND. The point in a circuit used as a common reference point for measuring purposes. To
connect some point of an electrical circuit or some item of electrical equipment to earth or to the
conducting medium used in lieu thereof. A conducting connection, whether intentional or accidental, between a
circuit or piece of equipment and the earth, or some body serving as earth; a place
of zero electrical potential.
GROUND BOUNCE. Ground bounce refers to the ringing on
an output signal when one or more outputs on the same
device are being switched from HIGH to LOW. Ground bounce is associated with
the inductance and resistance of the ground connection
in the integrated circuit.
GROUND CLUTTER. Unwanted echoes, from surrounding land masses, that appear on a radar indicator. [Radar terms, and definitions]
GROUND-CONTROLLED APPROACH. A radar system used to guide aircraft to safe landings in poor
visibility conditions.
GROUND FAULT INTERRUPTER. [GFI] A protective device that detects
abnormal current flowing to ground and then interrupts the
circuit. Detailed Ground Fault Interrupter definition
GROUND PLANE. The portion of a ground-plane antenna that acts as ground.
GROUND-PLANE ANTENNA. A type of antenna that uses a ground plane as a simulated ground to
produce low-angle radiation. [Antenna terms, and definitions]
GROUND PLANES. Copper planes used to minimize interference between circuits and from external
sources.
GROUND POTENTIAL. Zero potential with respect to the ground or earth.
GROUND RANGE. The distance on the surface of the earth between a radar and its target. Equal to slant
range only if both radar and target are at the same altitude.
GROUND REFLECTION LOSS. The loss of RF energy each time a radio wave is reflected from the
earth’s surface.
GROUND SCREEN. A series of conductors buried below the surface of the earth and arranged in a radial
pattern. Used to reduce losses in the ground.
GROUND WAVES. Radio waves which travel near the surface of the earth.
GROUP. A collection of units, assemblies, sub-assemblies, and parts. It is a subdivision of a set or system
but is not capable of performing a complete operational function.
GROUP VELOCITY. The forward progress velocity of a wave front in a waveguide.
GROWN JUNCTION. A method of mixing P-type and N-type impurities into a single crystal while the
crystal is being grown.
GUIDANCE RADAR. A system which provides information that is used to guide a missile to a target. [Radar terms, and definitions]
GYRO. Abbreviation for gyroscope.
GYROSCOPE. A mechanical device containing a spinning mass mounted so that it can assume any
position in space.
