Integrated active antennas suitable for massive MIMO operation
An integrated base station antenna includes a feed board having a plurality of columns of radiating elements mounted thereon and a plurality of phase shifters coupled to the plurality of columns of radiating elements mounted on a same side of the feed board as the plurality of columns of radiating elements.
1. An integrated base station antenna, comprising:
a plurality of columns of radiating elements, each column of radiating elements mounted on a respective feed board;
a calibration circuit that includes at least one calibration board coupled to the feed boards via a plurality of cableless connections;
a plurality of duplexers coupled to the calibration circuit via sub-miniature push-on (SMP) pin connections;
a plurality of power amplifier modules, each power amplifier module including a plurality of transmit/receive circuits, each transmit/receive circuit coupled to a respective one of the duplexers via respective cableless connections; and
at least one heatsink coupled to at least one of the power amplifier modules.
2. The integrated base station antenna of claim 1 , wherein the feed boards are coupled to the calibration circuit via a plurality of board-to-board connections.
3. The integrated base station antenna of claim 1 , further comprising a plurality of electromechanical phase shifters, wherein at least some of the phase shifters are implemented on the feed boards.
4. The integrated base station antenna of claim 3 , further comprising a reflector, wherein the radiating elements extend forwardly from a front side of the reflector, and wherein at least portions of mechanical linkages that connect the respective phase shifters to actuator motors are positioned forwardly of the front side of the reflector.
5. The integrated base station antenna of claim 1 , wherein the at least one heatsink comprises a plurality of heatsinks, and wherein each heatsink is connected to a respective one of the power amplifier modules, and the heatsinks are spaced apart from one another.
6. The integrated base station antenna of claim 1 , wherein the duplexers are coupled to the power amplifier modules via board-to-board connections.
7. An integrated base station antenna, comprising:
a feed board having a column of radiating elements mounted thereon;
a pair of phase shifters coupled to the column of radiating elements, the phase shifters at least partly implemented on the feed board;
a calibration board that is coupled to the feed board via a board-to-board connection; and
a plurality of duplexers coupled to the calibration board via sub-miniature push-on (SMP) pin connections.
8. The integrated base station antenna of claim 7 , further comprising:
a reflector;
wherein the feed board, the pair of phase shifters and the column of radiating elements are all on a front side of the reflector.
9. The integrated base station antenna of claim 8 , further comprising:
a mechanical linkage that is configured to adjust a setting of at least one of the pair of phase shifters, the mechanical linkage being mounted at least in part on the front side of the reflector.
10. The integrated base station antenna of claim 7 , further comprising:
a plurality of power amplifiers coupled to the plurality of duplexers via SMP pin connections.
11. The integrated base station antenna of claim 10 , further comprising a monolithic heatsink that is configured to receive the plurality of power amplifiers therein.
12. The integrated base station antenna of claim 10 , further comprising radio circuitry mounted between a first subset of the plurality of power amplifiers and a second subset of the plurality of power amplifiers.
13. The integrated base station antenna of claim 7 , further comprising:
a plurality of power amplifier modules; and
a plurality of monolithic heatsinks coupled to the plurality of power amplifier modules, respectively.
14. The integrated base station antenna of claim 13 , further comprising:
a calibration board coupled to the feed board via a board-to-board connection.
15. The integrated base station antenna of claim 1 , further comprising a radio circuitry module having a radio circuitry module heatsink that is separate from the at least one heatsink that is coupled to at least one of the power amplifier modules.
16. The integrated base station antenna of claim 10 , further comprising:
a plurality of power amplifier modules;
a radio circuitry module mounted between a first subset of the plurality of power amplifiers and a second subset of the plurality of power amplifiers; and
at least one monolithic heatsink coupled to the plurality of power amplifier modules.
17. The integrated base station antenna of claim 1 , wherein the calibration board includes at least one filter implemented thereon.
18. The integrated base station antenna of claim 17 , wherein the filter is a low pass filter.
19. The integrated base station antenna of claim 1 , wherein the calibration board includes a plurality of filters, and each filter is coupled to a respective one of the duplexers that are coupled to the calibration board.
20. The integrated base station antenna of claim 7 , wherein the calibration board includes a plurality of filters.