Serial signal injection using capacitive and transformer couplings for power line communications
First Claim
1. A coupling network comprising:
- a first power line interface port;
a power line modem interface configured to be coupled to a power line modem transceiver;
an inductor-capacitor circuit coupled to the power line modem interface and having a low-impedance resonant frequency at a signal frequency of the power line modem transceiver;
an alternating current ground coupled to a transceiver ground;
an inductor having a corner frequency between the signal frequency and the power line frequency, and having a first end and a second end, the first end of the inductor being connected to the inductor-capacitor circuit and a second end of the inductor being coupled to the alternating current ground; and
a power supply interface port coupled to the first power line interface port through the inductor.
8 Assignments
0 Petitions
Accused Products
Abstract
A coupling network has a first power line interface port and a power line modem interface configured to be coupled to a power line modem transceiver. An inductor-capacitor circuit coupled to the power line modem interface has a low-impedance resonant frequency at a signal frequency of the power line modem transceiver. An inductor having a corner frequency between the signal frequency and the power line frequency has a first end and a second end. The first end of the inductor is connected to the inductor-capacitor circuit and a second end of the inductor is coupled to an alternating current ground coupled to the transceiver ground. The inductor couples the first power line interface port to a power supply interface port.
65 Citations
15 Claims
-
1. A coupling network comprising:
-
a first power line interface port;
a power line modem interface configured to be coupled to a power line modem transceiver;
an inductor-capacitor circuit coupled to the power line modem interface and having a low-impedance resonant frequency at a signal frequency of the power line modem transceiver;
an alternating current ground coupled to a transceiver ground;
an inductor having a corner frequency between the signal frequency and the power line frequency, and having a first end and a second end, the first end of the inductor being connected to the inductor-capacitor circuit and a second end of the inductor being coupled to the alternating current ground; and
a power supply interface port coupled to the first power line interface port through the inductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
Specification