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US 2007/0176707 A1Published application
Inverted Style Balun with DC Isolated Differential Ports
AssigneeAnaren, Inc.
InventorNiels H. Kirkeby
Life of this patent
Estimating the term…
Abstract
The present invention is directed to a balun that includes a first coupler structure having a first port of a balanced port pair and an unbalanced port. A second coupler structure includes a second port of the balanced port pair. The second coupler port structure being connected to the first coupler structure such that the second port of the balanced port pair is DC isolated from the first port of the balanced port pair without decoupling components.
Claims50
A balun comprising:
- a first coupler structure including a first port of a balanced port pair and an unbalanced port;
- a second coupler structure including a second port of the balanced port pair, the second coupler structure being connected to the first coupler structure such that the second port of the balanced port pair is DC isolated from the first port of the balanced port pair without decoupling components.
A balun comprising:
- a first coupler structure including a first port of a balanced port pair and an unbalanced port;
- and
- a second coupler structure including a second port of the balanced port pair, the second coupler structure being connected to the first coupler structure such that the first port of the balanced port pair and the second port of the balanced port pair are isolated from ground potential without decoupling components.
A device configured to operate within a predetermined band of frequencies, the device comprising:
- a first coupler structure including a first portion of a first balanced port, a first port of a second balanced port and an unbalanced port;
- a resistive element connected to the first coupler structure;
- and
- a second coupler structure including a second portion of the first balanced port and a second portion of the second balanced port, the second coupler structure being connected to the first coupler structure by way of the resistive element such that the first and second portions of the first balanced port pair and the first and second portions of the second balanced port pair are isolated from each other substantially within the predetermined band without decoupling components.
1 more element
A balun comprising:
- a first coupler structure including a first port of a balanced port pair and an unbalanced port, the first coupler structure includes a first transmission line layer coupled to a second transmission line layer and a third transmission line layer coupled to the second transmission layer, the second transmission line layer being disposed between the first transmission line layer and the third transmission line layer;
- a second coupler structure including a second port of the balanced port pair, the second coupler structure also including a fourth transmission line layer coupled to a fifth transmission line layer and a sixth transmission line layer coupled to the fifth transmission layer, the fifth transmission line layer being disposed between the fourth transmission line layer and the sixth transmission line layer, the first transmission line layer being connected to the sixth transmission line layer and the third transmission line layer being connected to the fourth transmission line layer such that the first port of the balanced port pair is DC isolated from the second port of the balanced port pair.
Dependencies are inferred from the claim text.