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US 2026/0189208 A1Published application
Dual-stage radio frequency transformers
AssigneeSkyworks Solutions, Inc.
InventorSeunghwan Yoon
Life of this patent
Estimating the term…
Abstract
Aspects of this disclosure relate to multi-stage balanced-to-unbalanced transformers with enhanced input impedance symmetry between positive and negative input terminals resulting in improved common mode rejection and stable supply voltage provided to a source of the differential signal fed to the positive and negative input terminals. A multi-stage balanced-to-unbalanced transformer includes a balance-to-balance transformer connected in series with a balanced-to-unbalanced transformer.
Claims20
A multi-stage transformer comprising:
- a balanced-balanced (balbal) transformer including a pair of input terminals configured to receive an input differential signal, and a pair of intermediate output terminals configured to output an intermediate differential signal;
- and
- a balanced-unbalanced (balun) transformer including a pair of intermediate input terminals connected to the pair of intermediate output terminals and configured to receive the intermediate differential signal from the balanced-balanced transformer, and a pair of output terminals configured to output a single ended signal.
A radio frequency module comprising:
- a differential power amplifier configured to provide an amplified output signal;
- and
- a multi-stage transformer including a balanced-balanced (balbal) transformer, the balanced-balanced transformer including a pair of input terminals configured to receive the amplified output signal, and a pair of intermediate output terminals configured to output an intermediate differential signal;
- and a balanced-unbalanced (balun) transformer, the balanced-unbalanced transformer including a pair of intermediate input terminals connected to the pair of intermediate output terminals and configured to receive the intermediate differential signal from the balanced-balanced transformer, and a pair of output terminals configured to output a single ended signal.
1 more element
A mobile device comprising:
- a differential power amplifier configured to provide an amplified output signal;
- a multi-stage transformer including a balanced-balanced (balbal) transformer, the balanced-balanced transformer including a pair of input terminals configured to receive the amplified output signal, and a pair of intermediate output terminals configured to output an intermediate differential signal;
- and a balanced-unbalanced (balun) transformer, the balanced-unbalanced transformer transformer including a pair of intermediate input terminals connected to the pair of intermediate output terminals and configured to receive the intermediate differential signal from the balanced-balanced transformer, and a pair of output terminals configured to output a single ended signal;
- and
- an antenna arranged to receive the single ended signal and to wirelessly transmit the single ended signal.
2 more elements
Dependencies are inferred from the claim text.