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US07669312B2 Method of generating a layout for a differential circuit 失效
生成差分电路布局的方法

Method of generating a layout for a differential circuit
Abstract:
A differential circuit layout can advantageously use step symmetry for inductors and mirror symmetry for the rest of the circuit. Interconnect segments can be used to connect the terminals of the inductors to other components in the circuit. These interconnect segments facilitate the transition from the step symmetry of the inductors to the mirror symmetry of the other components. To provide this transition, the terminals of an inductor and its associated interconnect segments are formed on a middle axis of the inductor. This mixed symmetry can advantageously cancel the common-mode magnetic field, reduce the parasitic inductor coupling, and balance parasitic wiring capacitances between the two sides of the differential circuit.
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