Baseband / RFIC interface for high throughput MIMO communications
AssigneeBroadcom Corporation
InventorsJason A. Trachewsky, Arya Reza Behzad
Life of this patent
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Abstract
Analog signal paths are utilized between a baseband processor and a radio front end to support high throughput communications for a multiple in multiple out radio transceiver that support communications over two or more antennas. Specifically, analog differential I and Q path communication signals are exchanged between a radio front end core and a baseband processor to maximize throughput capacity for high data rate signals. Along the same lines, the impedances of traces and the interface are matched to reduce I/Q imbalance.
Claims18
A multiple-in multiple out (MIMO) radio transceiver, comprising:
- a baseband processor;
- a plurality of front end cores, each front end core further including:
- a first Rx/Tx processing block further includes:
- first receive in-phase and quadrature phase differential signal paths;
- first transmit in-phase and quadrature phase differential signal paths;
- a second Rx/Tx processing block further includes:
- second receive in-phase and quadrature phase differential signal paths;
- and
- second transmit in-phase and quadrature phase differential signal paths;
- and
- wherein each of the first and second Rx/Tx processing blocks for each of the plurality of front end cores are operable to process differential signals received from and transmitted to the baseband processor according to whether the differential signal is received from the baseband processor by a differential transmit path or is transmitted to the baseband processor from a differential receive path.
A method for transmitting and receiving wireless communication signals over a wireless medium, comprising:
- receiving a first ingoing analog signal at a first receive antenna and producing a differential first amplified and filtered analog signal to a baseband processor;
- producing a differential first outgoing analog signal from the baseband processor;
- transmitting a first outgoing RF signal from a first transmit antenna based on the differential first outgoing analog signal;
- receiving a second ingoing analog signal at a second receive antenna and producing a differential second amplified and filtered analog signal to the baseband processor;
- producing a differential second outgoing analog signal from the baseband processor;
- and
- transmitting a second outgoing RF signal from a second transmit antenna based on the differential second outgoing analog signal.
A method for transmitting and receiving wireless communication signals over a wireless medium, comprising:
- receiving at least two differential ingoing in-phase and quadrature phase communication signals based on RF signals received at a plurality of receive antennas;
- producing at least two differential outgoing in-phase and quadrature phase communication signals;
- and
- transmitting at least two outgoing RF signals based on the at least two differential outgoing in-phase and quadrature phase communication signals from a plurality of transmit antennas.
Dependencies are inferred from the claim text.