Ferroelectric transformer-free uninterruptible power supply (UPS) systems and methods for communications signal distribution systems

An Uninterruptible Power Supply (UPS) for a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable, the UPS comprising:

• a first circuit that is responsive to an AC input voltage and is configured to convert the AC input voltage into a Direct Current (DC) voltage;
• a battery that produces a battery voltage and is configured to be charged by the DC voltage;
• and
• a second circuit that is responsive to the battery voltage and is configured to convert the battery voltage into an AC voltage and to place the AC voltage on a coaxial cable regardless of whether the AC input voltage is operational.

A method for supplying power to a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, the method comprising:

• converting an input voltage between an input neutral line and an input voltage line into first and second complementary Direct Current (DC) voltages;
• converting the first and second complementary DC voltages into an AC voltage between an output neutral line and an output voltage line while connecting the input neutral line to the output neutral line without an intervening transformer winding;
• and
• connecting the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor.