Chockless power coupler

A power coupler for taping part of a RF signal from a combined RE and AC signal, the power coupler comprising:

• a main line input port to receive a downstream signal from an input signal source, said downstream signal comprising a combined AC component and RF signal;
• a BALUN comprising:
• a coaxial structure comprising:
• a central conductor to allow a first signal and part of a second signal to flow thorough;
• and
• an outer conductor, enclosing at least partially said central conductor, grounded at one side to reflect part of said second signal at substantially 180 degrees phase shift with respect to said first signal;
• a first cylindrical ferrite element enclosing at least part of said coaxial structure to increase the inductance of said coaxial structure,
• wherein the length of said BALUN is about ½ wavelength of the highest frequency of the frequency range of said second signal,
• wherein the first port of the central conductor of said BALUN is connected to said input port and the second port is connected to a main line output port, to allow said AC component and part of said RF signal to flow thorough said BALUN central conductor and to reflect part of said RF signal at substantially 180 degrees phase shift with respect to said RF signal on said BALUN outer conductor, wherein said BALUN outer conductor is coupled to a second circuitry;
• a first circuitry coupled to said input port and to said first port of said BALUN central conductor to sample small part of said RF signal;
• said main line output port to receive said AC component and part of said RF signal to feed a main line distribution cable;
• said second circuitry, coupled to said BALUN outer conductor, to match impedances and improve the return loss of said RF signal and to pass said reflected RE signal to a third circuitry;
• said third circuitry coupled to said second circuitry and to said first circuitry to reverse the phase of said reflected RF signal received from said second circuitry and sum the reversed signal with the RF signal received from said first circuit and feed an output tap port with the summed RF signal;
• and
• an output tap port to feed splitting devices with said summed RF signal for the distribution of said summed RF signal to subscribers drop lines.

A method for tapping part of a RF signal from a combined RF and AC signal, the method comprising:

• providing a BALUN comprising:
• a coaxial structure comprising:
• a central conductor to allow a first signal and part of a second signal to flow thorough;
• and
• an outer conductor, enclosing at least partially said central conductor, grounded at one side to reflect part of said second signal at substantially 180 degrees phase shift with respect to said first signal;
• a first cylindrical ferrite element enclosing at least part of said coaxial structure to increase the inductance of said coaxial structures
• wherein the length of said BALUN is about ½ wavelength of the highest frequency of the frequency range of said second signal;
• receiving a downstream signal from an input signal source, said downstream signal comprising a combined AC component and a RF signal component;
• allowing said AC component and part of said RF signal to flow thorough the BALUN central conductor to create an output downstream signal;
• feeding a main line distribution cable with said output downstream signal;
• reflecting part of said RF signal at substantially 180 degrees phase shift with respect to said RF signal on said BALUN outer conductor to create a reflected RF signal;
• sampling part of said RF signal using a first circuitry to create sampled RF signal;
• matching impedances and reducing the return loss of said RF signal using a second circuitry;
• reversing the phase of said reflected RF signal to create reversed RF signal;
• and
• summing said reversed RF signal with said sampled RE signal using a third circuitry to create a summed RF signal.