| Balun Technology
|
|
Balanced Transmission. Twisted pair cable transmits data by means of a
balanced signal, i.e. voltage amplitudes on the two conductors are equal with respect to ground. One wire transmits a positive signal
voltage while the other wire simultaneously transmits a negative signal voltage. To decode the signal pair, a processor measures the
received voltage on each wire and computes the difference to determine the transmitted binary value (zero or one). Balanced
transmission offers a measure of protection against data errors arising from signal noise. Because noise tends to affect the voltage
on each wire equally, the voltage differential remains relatively stable. Twisted pair cables typically terminate on Telco punch-down
blocks, RJ-48C, or Telco (48- or 96-pin) connectors.
Unbalanced Transmission.
Coaxial cable transmits data by means of an unbalanced signal, i.e. voltage amplitudes on the two conductors
are unequal with respect to ground. A conductive core caries signal voltage, while a surrounding metallic shield serves as signal
ground. Carrier and ground are separated by a non-conductive material, and the entire cable is covered by an insulating jacket.
Coaxial cables typically terminate with BNC - a.k.a. "barrel "- connectors.
Impedance. Whereas copper wire offers a characteristic impedance resistance to electrical alternating
current) 120 Ohms, the characteristic impedance of coaxial cable is 75 Ohms. When making a connection between the differing cable types,
the interface
| Balun.
The word "balun" is a contraction of the term "balanced-unbalanced." A balun provides interface conversion between
balanced and unbalanced signal transmission media (most often between 120-Ohm copper twisted-pair and 75-Ohm coaxial cables).
Beyond the basic physical connection between different cables and connectors, baluns provide conversion between differing
electrical signals, including the required impedance transformation.
Patton Balun Products...
|
|
converter also provides impedance transformation between the two signals.
Need an OEM Partner?
From
baluns to
DSL
modems to
VoIP gateways to
enterprise routers to
remote access servers
to complete access infrastructure solutions... When it comes to OEM manufacturing for network access
and connectivity solutions, you can count on partnership with Patton.
|
|
