Tunable duplexer method using hybrid transformer with dual antenna
AssigneeRF Micro Devices, Inc.
InventorsNadim Khlat, Marcus Granger-Jones
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Abstract
The present disclosure relates to a hybrid transformer duplexer apparatus. The hybrid transformer duplexer apparatus includes an autotransformer having a first port, a second port and a tap coupled to a first antenna port. A step-down transformer has a primary winding with a first terminal coupled to the first port of the autotransformer and a second terminal coupled to the second port of the autotransformer, and a secondary winding having a third terminal coupled to a second antenna port and a fourth terminal coupled to a common node.
Claims29
A hybrid transformer duplexer apparatus comprising:
- an autotransformer having a first port, a second port and a tap coupled to a first antenna port;
- and
- a step-down transformer having a primary winding with a first terminal coupled to the first port of the autotransformer and a second terminal coupled to the second port of the autotransformer, and a secondary winding having a third terminal coupled to a second antenna port and a fourth terminal coupled to a common node.
A dual hybrid transformer duplexer apparatus comprising:
- a first autotransformer having a first TX port, a first RX port and a first tap coupled to a first high band antenna port;
- a first step-down transformer having a first primary winding with a first primary terminal coupled to the first TX port of the first autotransformer and a second primary terminal coupled to the first RX port of the first autotransformer, and a first secondary winding having a first secondary terminal coupled to a second high band antenna port and a second secondary terminal coupled to a common node;
- and
- a second autotransformer having a second TX port, a second RX port and a second tap coupled to a first low band antenna port;
- a second step-down transformer having a second primary winding with a third primary terminal coupled to the second TX port of the second autotransformer and a fourth primary terminal coupled to the second RX port of the second autotransformer, and a second secondary winding having a third secondary terminal coupled to a second low band antenna port and a fourth secondary terminal coupled to the common node.
Dependencies are inferred from the claim text.