Fast transceiver front end serial control
Devices and methods for reconfiguration of electronic circuits in multi-antenna communication systems are described. Using indexed programmable lookup tables, phase and gain information related to the antenna array implemented in such system is accessed. Same method may be used to reconfigure state of transceivers and other electronic circuits within such systems. The described methods and devices can be implemented using standardized serial interfaces.
1. A control circuit comprising:
command interpreter;
a serial interface providing control commands to the command interpreter; and
one or more lookup tables;
wherein:
the one or more lookup tables comprise gain and/or phase values of antennas of an antenna array; and
the command interpreter is configured to generate, based on the control commands, one or more first indices to select first entries to the one or more lookup tables to access selected gain and/or phase values of the antennas of the antenna array.
2. The control circuit of claim 1 , wherein the serial interface is a standardized serial interface such as serial peripheral interface (SPI®) or Mobile Industry Processor Interface (MiPi®).
3. A communication system comprising:
the control circuit of claim 2 ; and
a plurality of transceivers connected to corresponding antennas of the antenna array through corresponding switches,
wherein the communication system is configured to set or reset gains and/or phases of the antennas of the antenna array based on the selected gain and/or phase values of the antennas of the antenna array.
4. The communication system of claim 3 , wherein the one or more lookup tables further comprise:
transceivers control values;
switches control values; and
communication system parameters values.
5. The communication system of claim 4 , wherein:
the command interpreter is further configured to generate, based on the control commands, one or more second indices to access selected transceivers control values, selected switches control values and/or selected communication system parameters; and
the communication system is configured to set or reset:
states of transceivers based on the selected transceivers control value;
states of switches based on the selected switches control values; and/or
parameters of the communication system based on the communication system parameters values.
6. The communication system of claim 5 , wherein the states of the transceivers and the corresponding switches are selected from one of a) transmit, b) receive, c) neutral, d) sleep, e) loopback, f) self-test, and g) calibration, and the parameters of the communication system comprise a modulation center frequency.
7. The control circuit of claim 6 , wherein the control commands comprise each a plurality of bits and a variable header indicating a command control type.