Source power coupler
First Claim
1. A source power coupler for coupling a power source to a first transmission line and a second transmission line, said first and said second transmission lines coupling a first processor to a second processor, wherein power is supplied to said first processor and said second processor by said first and said second transmission lines and data signals are conducted between said first processor and said second processor by said first and said second transmission lines, said source power coupler comprising:
- an operational amplifier having a non-inverting input and an inverting input;
a transistor having a gate coupled to an output of said operational amplifier, a drain coupled to one of said first and said second transmission lines, and a source coupled to said inverting input of said operational amplifier, wherein a first control loop provides AC impedance between said power source and said one of said transmission lines;
a capacitor coupling said non-inverting input of said operational amplifier and said power source;
a resistor coupling said non-inverting input of said operational amplifier and said one of said transmission lines, wherein said capacitor and said resistor provide a second control loop for maintaining an approximately constant DC voltage across said transistor.
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Accused Products
Abstract
A transistorized source power coupler for coupling a power source to a pair of transmission lines. DC power from the power source is conducted by the transistorized source power coupler to the transmission lines. Meanwhile, AC signals on the transmission lines are isolated from the power source by the source power coupler. Consequently, the same pair of transmission lines can be used to supply power to cells of a communications system while also conducting data signals between those cells with minimal effect to the power source.
111 Citations
32 Claims
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1. A source power coupler for coupling a power source to a first transmission line and a second transmission line, said first and said second transmission lines coupling a first processor to a second processor, wherein power is supplied to said first processor and said second processor by said first and said second transmission lines and data signals are conducted between said first processor and said second processor by said first and said second transmission lines, said source power coupler comprising:
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an operational amplifier having a non-inverting input and an inverting input; a transistor having a gate coupled to an output of said operational amplifier, a drain coupled to one of said first and said second transmission lines, and a source coupled to said inverting input of said operational amplifier, wherein a first control loop provides AC impedance between said power source and said one of said transmission lines; a capacitor coupling said non-inverting input of said operational amplifier and said power source; a resistor coupling said non-inverting input of said operational amplifier and said one of said transmission lines, wherein said capacitor and said resistor provide a second control loop for maintaining an approximately constant DC voltage across said transistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A solid state source power coupler for coupling a power source to a first transmission line and a second transmission line, wherein direct current power from said power source is conducted by said source power coupler to said first and said second transmission lines while alternating current on said first and said second transmission lines is isolated from said power source by said source power coupler, wherein said source power coupler comprises:
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an operational amplifier having a non-inverting input and an inverting input; a transistor having a gate coupled to an output of said operational amplifier, a drain coupled to the other of said first and said second transmission lines, and a source coupled to said inverting input of said operational amplifier, wherein a first control loop provides an AC impedance between said power source and said other one of said transmission lines; a first resistor coupled between said source of said transistor and said power source; a capacitor coupled between said non-inverting input of said operational amplifier and said power source; a second resistor coupled between said non-inverting input of said operational amplifier and said other one of said transmission lines, wherein said capacitor and said second resistor provide a second control loop for maintaining an approximately constant DC voltage across said transistor. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification