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US 2015/0085709 A1Published application
Integrated On-Chip Duplexer for Simultaneous Wireless Transmission
AssigneeBroadcom Corporation
InventorsBrian Lee, Ali Afsahi
Life of this patent
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Abstract
An electrical balancing network combined with coupled inductors (EBN) replaces a transmit/receive switch was used for isolation for time division duplexing transmission techniques. The EBN allows simultaneous transmit operation, or simultaneous receive operation, of multiple wireless technologies that would otherwise have to be scheduled for transmit or receive in a time division multiplexing manner. The wireless technologies may be WLAN, LTE, Bluetooth or other wireless technologies.
Claims20
A circuit comprising:
- a first port for a first wireless technology;
- a second port for a different second wireless technology;
- an antenna port shared by the first port and the second port;
- a first inductive connection from the first port to the antenna port;
- a second inductive connection from the second port to the antenna port, the second inductive connection counterbalance coupled with the first inductive connection;
- and
- an electrical balancing network configured to match an impedance at the antenna port, the electrical balancing network coupled between the first port and the second port.
4 more elements
A circuit comprising:
- a transmit port shared by a first wireless technology and a different second wireless technology;
- a receive port shared by the first wireless technology and the second wireless technology;
- an antenna port;
- a first inductive connection from the transmit port to the antenna port;
- an electrical balancing network configured to match an impedance at the antenna port;
- a second inductive connection between the first inductive connection and the electrical balancing network, the second inductive connection configured to counterbalance the first inductive connection;
- and
- a third inductive connection coupled to the first inductive connection and the second inductive connection and the receive port.
5 more elements
A circuit comprising:
- a first wireless technology transmit and receive port;
- a second wireless technology transmit and receive port;
- a balancing circuit inductively coupled between:
- the first wireless technology transmit and receive port;
- and
- the second wireless technology transmit and receive port;
- and
- an antenna circuit inductively coupled with the balancing circuit and inductively coupled between:
- the first wireless technology transmit and receive port;
- and
- the second wireless technology transmit and receive port.
8 more elements
Dependencies are inferred from the claim text.