High-frequency module and communication device
A high-frequency module ( 1 ) includes a multilayer dielectric substrate ( 2 ), an RFIC ( 21 ), and an array antenna ( 13 ). The array antenna ( 13 ) includes a plurality of first patch antennas ( 11 ) having identical polarization directions with each other, and a plurality of second patch antennas ( 12 ) having identical polarization directions with each other, which are polarization directions positioned between two orthogonal polarizations of the first patch antenna ( 11 ). The first patch antenna ( 11 ) and the second patch antenna ( 12 ) simultaneously operate as a transmitting antenna or a receiving antenna.
1. A high-frequency module comprising:
a multilayer dielectric substrate;
an RFIC having a plurality of RF input/output terminals connected to the multilayer dielectric substrate; and
an array antenna configured by a plurality of dual-polarized antennas, each placed on or in the multilayer dielectric substrate and radiating two orthogonal polarizations, wherein
the RFIC has, for each of the plurality of RF input/output terminals, a switching device for switching on/off of input or output of an RF signal and a variable phase shifter, and
two of the plurality of RF input/output terminals are respectively connected to feed points corresponding to orthogonal polarizations in each of the plurality of dual-polarized antennas, wherein
the plurality of dual-polarized antennas are configured by a plurality of first dual-polarized antennas having identical first polarization directions with each other and a plurality of second dual-polarized antennas having identical second polarization directions with each other, the second polarization directions being positioned between two orthogonal polarizations of each of the first dual-polarized antennas, and
each of the first dual-polarized antennas and each of the second dual-polarized antennas simultaneously operates as a transmitting antenna or a receiving antenna.
2. The high-frequency module according to claim 1 , wherein
at least one second dual-polarized antenna of the plurality of second dual-polarized antennas has a feed point at a position rotated by one of 45 degrees, 135 degrees, 225 degrees, or 315 degrees to a corresponding feed point of one first dual-polarized antenna of the plurality of first dual-polarized antennas.
3. The high-frequency module according to claim 2 , wherein
numbers of the first dual-polarized antennas and the second dual-polarized antennas are identical with each other.
4. The high-frequency module according to claim 2 , wherein
the first dual-polarized antennas and the second dual-polarized antennas are arranged adjacently and alternately.
5. The high-frequency module according to claim 2 , wherein
the first dual-polarized antennas and the second dual-polarized antennas are multi-band antennas operating in at least two frequency bands of a 28 GHz band, a 39 GHz band, or a 60 GHz band.
6. The high-frequency module according to claim 2 , wherein
the RFIC is connected to a baseband IC.
7. A communication device comprising the high-frequency module according to claim 6 .
8. The high-frequency module according to claim 1 , wherein
numbers of the first dual-polarized antennas and the second dual-polarized antennas are identical with each other.
9. The high-frequency module according to claim 8 , wherein
the first dual-polarized antennas and the second dual-polarized antennas are arranged adjacently and alternately.
10. The high-frequency module according to claim 8 , wherein
the first dual-polarized antennas and the second dual-polarized antennas are multi-band antennas operating in at least two frequency bands of a 28 GHz band, a 39 GHz band, or a 60 GHz band.
11. The high-frequency module according to claim 8 , wherein
the RFIC is connected to a baseband IC.
12. A communication device comprising the high-frequency module according to claim 11 .
13. The high-frequency module according to claim 1 , wherein
the first dual-polarized antennas and the second dual-polarized antennas are arranged adjacently and alternately.
14. The high-frequency module according to claim 13 , wherein
the first dual-polarized antennas and the second dual-polarized antennas are multi-band antennas operating in at least two frequency bands of a 28 GHz band, a 39 GHz band, or a 60 GHz band.
15. The high-frequency module according to claim 13 , wherein
the RFIC is connected to a baseband IC.
16. A communication device comprising the high-frequency module according to claim 15 .
17. The high-frequency module according to claim 1 , wherein
the first dual-polarized antennas and the second dual-polarized antennas are multi-band antennas operating in at least two frequency bands of a 28 GHz band, a 39 GHz band, or a 60 GHz band.
18. The high-frequency module according to claim 17 , wherein
the RFIC is connected to a baseband IC.
19. The high-frequency module according to claim 1 , wherein
the RFIC is connected to a baseband IC.
20. A communication device comprising the high-frequency module according to claim 19 .