"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"
Cable: An assembly of one or more insulated conductors, or optical fibers, or a combination of both, within an enveloping jacket. A cable is constructed so that the
conductors or fibers may be used singly or in groups. Certain types of communications cables, especially long submarine cables but also terrestrial cables, whether the
communications media are metallic or optical fiber, may contain metallic conductors that supply power to repeaters (amplifiers). Vendors that Manufacture Wire
Cable assembly: A cable that is ready for installation in specific applications and usually terminated with connectors. [Cable assembly manufacturers]
Cable connectors: Fittings for cable ends which permit rapid connection
and disconnection with equipment or other cables. [Cable connector manufacturers]
Capacitance: A natural property of an electrical circuit which
opposes the rate of change of voltage. [Dictionary of Capacitor Terms]
Capacitor: A device for storing an electrical charge. Dictionary of Capacitor terms. [Capacitor manufacturers]
Cassegrain antenna: An antenna in which the feed radiator is mounted at or near the surface of a concave main reflector and is aimed at a convex secondary reflector slightly inside
the focus of the main reflector. Energy from the feed unit illuminates the secondary reflector, which reflects it back to the main reflector, which then forms the desired
forward beam. The Cassegrain antenna design is adapted from optical telescope technology and allows the feed radiator to be more easily supported.
Cellular Communications: A cellular communications area is divided into smaller areas, called cells, and transmissions are passed from cell to cell until they reach their final destinations. Each cell must contain an antenna and transmission facilities to pick up signals from another cell or from a caller and to
pass those signals on to an adjacent cell or to a caller within the cell. Cells can be anywhere from a few kilometers to 32 kilometers in diameter.
Center-fed: Transmission line connection at the electrical center of
an antenna radiator.
Chrome Coil Antenna: -- Text in review.
Chrome Nut Antenna: -- Text in review.
Circuit noise level: At any point in a transmission system, the ratio of the circuit noise at that point to an arbitrary level chosen as a reference. Note: The circuit noise level is usually expressed in dBrn0, signifying the reading of a circuit noise meter, or in dBa0, signifying circuit noise meter reading adjusted to represent an interfering effect under specified conditions.
Circular Polarization: In electromagnetic wave propagation, polarization such that the tip of the electric field vector describes a helix. The magnitude of the electric field
vector is constant. The projection of the tip of the electric field vector upon any fixed plane intersecting, and normal to, the direction of propagation, describes a circle. A circularly polarized wave may be resolved into two linearly polarized waves in phase quadrature with their planes of polarization at right angles to each other. Circular polarization also referred to as "right-hand" or "left-hand," depending on whether the helix describes the thread of a right-hand or left-hand screw, respectively.
Coaxial cable: A transmission line consisting of two conductors,
one inside the other, and separated by insulating material. The inner
conductor may be a small copper tube or wire; the outer conductor
may be metallic tubing or braid. Detailed Coax Cable definition and graphic. Radiation loss from this type of
line is less then other types of cable. [Coax Cable Manufacturers]
Collinear Antenna: --- Text in review.
Communications circuit: The means by which information is
transferred between two or more places.
Conductor: A material (usually metal) that has low resistance to
the flow of electrical current. A wire, cable, or other object capable
of carrying electric current. Good conductors are made of metals
such as silver, copper, and aluminum.
Connections: Points at which two or more conductors are brought
into contact. Connector Manufacturers
Corner-Reflector Antenna. A half-wave antenna with a reflector consisting of two flat metal
surfaces meeting at an angle behind the radiator.
Counterpoise: A conductor or system of conductors used as a substitute
for ground in an antenna system; a wire or group of wires
mounted close to the ground, but insulated from ground, to form a
low-impedance, high-capacitance path to ground.
Critical frequency: The highest frequency at which a signal may
be transmitted directly overhead and be reflected back to Earth
from the ionosphere.
Cross-polarized: The polarization of a received signal is 90
degrees to the polarization of the receiving antenna.
"D" Terms
