Planar transformer arrangement
First Claim
1. A planar transformer arrangement to provide isolation between an input signal and an output signal, the planar transformer arrangement comprising:
- a planar medium having a first layer, a second layer, and a dielectric interlayer arranged between the first and second layers;
at least one meandering primary winding arranged on the first layer of the planar medium, a current flow being induced within the primary winding in accordance with the input signal;
at least one meandering secondary winding arranged on the second layer of the planar medium, the primary and secondary windings forming a planar transformer, whereby a voltage is induced across the secondary winding in accordance with the current flow within the primary winding; and
a mode elimination arrangement configured to produce a compensated voltage by compensating for a common mode interference on the voltage induced across the secondary winding, the mode elimination arrangement being further configured to generate the output signal in accordance with the compensated voltage;
wherein the dielectric interlayer of the planar medium provides a voltage isolation between the primary and secondary windings.
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Accused Products
Abstract
A planar transformer arrangement and method provide isolation between an input signal and an output signal. The planar transformer arrangement includes a planar medium having a first layer, a second layer, and a dielectric interlayer arranged between the first and second layers; at least one meandering primary winding arranged on the first layer of the planar medium, a current flow being induced within the primary winding in accordance with the input signal; at least one meandering secondary winding arranged on the second layer of the planar medium, the primary and secondary windings forming a planar transformer, whereby a voltage is induced across the secondary winding in accordance with the current flow within the primary winding; and a mode elimination arrangement configured to produce a compensated voltage by compensating for a common mode interference on the voltage induced across the secondary winding, the mode elimination arrangement being further configured to generate the output signal in accordance with the compensated voltage; wherein the dielectric interlayer of the planar medium provides a voltage isolation between the primary and secondary windings.
20 Citations
22 Claims
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1. A planar transformer arrangement to provide isolation between an input signal and an output signal, the planar transformer arrangement comprising:
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a planar medium having a first layer, a second layer, and a dielectric interlayer arranged between the first and second layers;
at least one meandering primary winding arranged on the first layer of the planar medium, a current flow being induced within the primary winding in accordance with the input signal;
at least one meandering secondary winding arranged on the second layer of the planar medium, the primary and secondary windings forming a planar transformer, whereby a voltage is induced across the secondary winding in accordance with the current flow within the primary winding; and
a mode elimination arrangement configured to produce a compensated voltage by compensating for a common mode interference on the voltage induced across the secondary winding, the mode elimination arrangement being further configured to generate the output signal in accordance with the compensated voltage;
wherein the dielectric interlayer of the planar medium provides a voltage isolation between the primary and secondary windings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A planar transformer arrangement to provide isolation between an input signal and an output signal, the planar transformer arrangement comprising:
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a planar medium having a first layer, a second layer, and a dielectric interlayer arranged between the first and second layers;
at least one meandering primary winding arranged on the first layer of the planar medium, a current flow being induced within the primary winding in accordance with the input signal;
at least one meandering secondary winding arranged on the second layer of the planar medium, the primary and secondary windings forming a planar transformer, whereby a voltage is induced across the secondary winding in accordance with the current flow within the primary winding; and
wherein the dielectric interlayer of the planar medium provides a voltage isolation between the primary and secondary windings, and each of the primary and secondary windings includes respective sub-windings connected in anti-series, the sub-windings being configured to cancel a magnetic common mode interference generated by an externally applied magnetic field. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method of providing isolation between an input signal and an output signal, the method comprising:
providing a planar transformer arrangement to provide isolation between an input signal and an output signal, the planar transformer arrangement including a planar medium having a first layer, a second layer, and a dielectric interlayer arranged between the first and second layers;
at least one meandering primary winding arranged on the first layer of the planar medium, a current flow being induced within the primary winding in accordance with the input signal;
at least one meandering secondary winding arranged on the second layer of the planar medium, the primary and secondary windings forming a planar transformer, whereby a voltage is induced across the secondary winding in accordance with the current flow within the primary winding; and
a mode elimination arrangement configured to produce a compensated voltage by compensating for a common mode interference on the voltage induced across the secondary winding, the mode elimination arrangement being further configured to generate the output signal in accordance with the compensated voltage;
wherein the dielectric interlayer of the planar medium provides a voltage isolation between the primary and secondary windings.
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21. A mode elimination arrangement for use with a planar transformer arrangement, the planar transformer arrangement including a planar medium having a first layer and a second layer;
- at least one meandering primary winding arranged on the first layer of the planar medium; and
at least one meandering secondary winding arranged on the second layer of the planar medium, the mode elimination arrangement comprising;
a resistor network coupled to at least one of the meandering primary winding and the meandering secondary winding; and
a differential amplifier arrangement coupled to the resistor network;
wherein the differential amplifier compensates for a common mode interference on a voltage induced across at least one of the meandering primary winding and the meandering secondary winding. - View Dependent Claims (22)
- at least one meandering primary winding arranged on the first layer of the planar medium; and
Specification