Phased array antenna architecture
A radio system architecture includes a receiver having multiple sub arrays in a phased array, the multiple sub arrays configured to perform carrier aggregation (CA) and multiple input multiple output (MIMO) signal processing, and provide independent beam management for multiple radio frequency (RF) signals received at each of the multiple sub arrays, and a data processor configured to receive signals from the receiver and extract information regarding wireless communications.
1. A receive system for performing carrier aggregation (CA) and multiple input multiple output (MIMO) operation at millimeter wave (mmW) frequencies, comprising:
a phased array having a plurality of groupings each having a pair of sub array structures, each sub array structure having a plurality of phased array elements and a multiplexer, each phased array element coupled to an antenna element, each phased array element having a low noise amplifier (LNA) and a phase shifter (PS), the plurality of groupings comprising a first high band (HB) grouping and a first low band (LB) grouping;
a downconverter circuit selectively connected to each sub array structure in the first high band (HB) grouping and the first low band (LB) grouping, each downconverter circuit having a radio frequency (RF) amplifier, a mixer, an intermediate frequency (IF) amplifier, and a filter; and
a combining circuit connected to each of the downconverter circuits selectively connected to the first high band (HB) grouping and the first low band (LB) grouping, the combining circuit configured to provide signals from each downconverter circuit to an intermediate frequency (IF) port.
2. The system of claim 1 , further comprising:
a first (HB) synthesizer configured to generate a first local oscillator (LO) signal; and
a second (LB) synthesizer configured to generate a second local oscillator (LO) signal, the first and second LO signals configured to be provided to any of the downconverter circuits.
3. The system of claim 1 , wherein each sub array structure is configured to provide independent beam management including independent phase shifting among the sub array structures.
4. The system of claim 1 , wherein the antenna elements comprise a split antenna array and are configured to realize independent beamforming (IBF) for interband carrier aggregation (CA) and 4×4 multiple input multiple output (MIMO) signal processing.
5. The system of claim 1 , wherein the receive system is configured to receive at least two radio frequency signals having different frequencies at two or more sub array structures.
6. The system of claim 5 , wherein the receive system is configured to simultaneously downconvert the two radio frequency signals at different frequencies to corresponding first and second intermediate frequency signals and provide the first and second intermediate frequency signals on a single output port.
7. The system of claim 1 , wherein the receive system is configured to receive at least two radio frequency signals having the same frequency at two or more sub array structures.
8. The system of claim 7 , wherein the receive system is configured to simultaneously downconvert the two radio frequency signals at the same radio frequency to a first intermediate frequency signal and a second intermediate frequency signal and simultaneously provide the first intermediate frequency signal and the second intermediate frequency signal on a single output port.
9. The system of claim 1 , wherein the plurality of groupings comprise four quadrants and each antenna element has a horizontal polarity output and a vertical polarity output.
10. The system of claim 1 , wherein the IF port comprises at least a first output pin (IF_1), where a first intermediate frequency (IF) signal and a second IF signal are provided on the first output pin (IF_1).
11. A method for signal processing, comprising:
receiving at least two radio frequency (RF) signals at a receiver, wherein the at least two radio frequency signals are received at different receiver sub array structures;
selectively phase shifting the at least two radio frequency (RF) signals;
selectively directing the at least two phase shifted radio frequency (RF) signals to selected downconverter circuits;
downconverting simultaneously the at least two RF signals to intermediate frequency (IF) signals; and
connecting the at least two IF signals to at least one selected output port.
12. The method of claim 11 , wherein the at least two radio frequency signals have different frequencies.
13. The method of claim 11 , wherein the at least two radio frequency signals have the same frequency.
14. The method of claim 11 , further comprising selectively routing the at least two IF signals from any of a plurality of sub array structures to any of a first output port and a second output port.
15. The method of claim 11 , further comprising selectively amplifying and phase shifting the at least two RF signals.
16. A device, comprising:
means for receiving at least two radio frequency (RF) signals at different sub array structures of a receiver;
means for selectively phase shifting the at least two radio frequency (RF) signals;
means for selectively directing the at least two phase shifted radio frequency (RF) signals to selected downconverter circuits;
means for downconverting simultaneously the at least two RF signals to intermediate frequency (IF) signals; and
means for connecting the at least two IF signals to at least one selected output port.
17. The device of claim 16 , wherein the at least two radio frequency signals have different frequencies.
18. The device of claim 16 , wherein the at least two radio frequency signals have the same frequency.
19. The device of claim 16 , further comprising means for selectively routing the at least two IF signals from any of a plurality of sub array structures to any of a first output port and a second output port.
20. The device of claim 16 , further comprising means for selectively amplifying and phase shifting the at least two RF signals.
21. A radio system architecture, comprising:
a receiver having multiple sub arrays in a phased array, the multiple sub arrays configured to perform carrier aggregation (CA) and multiple input multiple output (MIMO) signal processing, and provide independent beam management for multiple radio frequency (RF) signals received at each of the multiple sub arrays; and
a data processor configured to receive signals from the receiver and extract information regarding wireless communications.
22. The radio system architecture of claim 21 , wherein the phased array has 16 antenna elements.
23. The radio system architecture of claim 21 , wherein at least two radio frequency signals are received at two or more sub arrays and have different frequencies.
24. The radio system architecture of claim 23 , wherein the architecture is configured to simultaneously downconvert the two radio frequency signals at different frequencies to corresponding first and second intermediate frequency signals and provide the first and second intermediate frequency signals on a single output port.
25. The radio system architecture of claim 21 , wherein at least two radio frequency signals are received at two or more sub arrays and have the same frequency.
26. The radio system architecture of claim 25 , wherein the architecture is configured to simultaneously downconvert the two radio frequency signals at the same radio frequency to a first intermediate frequency signal and a second intermediate frequency signal and simultaneously provide the first intermediate frequency signal and the second intermediate frequency signal on a single output port.