Integrated coupling device, in particular of the 90° hybrid type

A coupling device, comprising:

• a 90° hybrid inductive-capacitive coupling stage including:
• two first stage terminals forming one of stage inputs or stage outputs;
• two second stage terminals forming the other of stage outputs or stage inputs;
• a first stage axis of symmetry;
• a second stage axis of symmetry orthogonal to the first stage axis of symmetry;
• neighboring inductive metal tracks being overlaid in at least one crossing region and configured to form both an inductive circuit and a capacitive circuit;
• wherein the neighboring inductive metal tracks are coupled to the two first stage terminals and to the two second stage terminals such that the two first stage terminals are situated on one side of the first stage axis of symmetry and the two second stage terminals are situated on the other side of the first stage axis of symmetry.

A coupling device, comprising:

• a first 90° hybrid inductive-capacitive coupling stage;
• a second 90° hybrid inductive-capacitive coupling stage;
• wherein each 90° hybrid inductive-capacitive coupling stage comprises:
• a first stage axis of symmetry;
• a second stage axis of symmetry orthogonal to the first stage axis of symmetry;
• neighboring inductive metal tracks being overlaid in at least one crossing region and configured to form both an inductive circuit and a capacitive circuit;
• wherein the neighboring inductive metal tracks are coupled to two first stage terminals and to two second stage terminals such that the two first stage terminals are situated on one side of the first stage axis of symmetry and the two second stage terminals are situated on the other side of the first stage axis of symmetry;
• and
• wherein the first and second 90° hybrid inductive-capacitive coupling stages are coupled to each other.

A transmission chain, comprising:

• a power divider;
• a power combiner;
• and
• two power amplifiers respectively coupled between the power divider and the power combiner;
• wherein the power divider and the power combiner are each formed by a coupling device comprising:
• a 90° hybrid inductive-capacitive coupling stage including:
• two first stage terminals forming one of stage inputs or stage outputs;
• two second stage terminals forming the other of stage outputs or stage inputs;
• a first stage axis of symmetry;
• a second stage axis of symmetry orthogonal to the first stage axis of symmetry;
• neighboring inductive metal tracks being overlaid in at least one crossing region and configured to form both an inductive circuit and a capacitive circuit;
• wherein the neighboring inductive metal tracks are coupled to the two first stage terminals and to the two second stage terminals such that the two first stage terminals are situated on one side of the first stage axis of symmetry and the two second stage terminals are situated on the other side of the first stage axis of symmetry.