US 12,438,278 B2
Enhanced antenna module and antenna array for wireless communication systems
Matti Somersalo, Espoo (FI)
Assigned to Teknologian tutkimuskeskus VTT Oy, Espoo (FI)
Appl. No. 18/271,247
Filed by Teknologian tutkimuskeskus VTT Oy, Espoo (FI)
PCT Filed Jan. 5, 2022, PCT No. PCT/FI2022/050013
§ 371(c)(1), (2) Date Jul. 7, 2023,
PCT Pub. No. WO2022/148909, PCT Pub. Date Jul. 14, 2022.
Claims priority of application No. 20215020 (FI), filed on Jan. 8, 2021.
Prior Publication US 2024/0063547 A1, Feb. 22, 2024
Int. Cl. H01Q 9/28 (2006.01); H01Q 21/00 (2006.01); H01Q 21/24 (2006.01); H01P 1/00 (2006.01)
CPC H01Q 9/28 (2013.01) [H01Q 21/24 (2013.01); H01P 1/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An antenna module, comprising:
a Radio Frequency, RF, component electrical connection platform;
a dipole antenna on top of, or buried in, the platform, wherein the dipole antenna is arranged to transmit and/or receive an RF signal and a distance between a ground at a bottom of the platform and arms of the dipole antenna is about a quarter of a wavelength of the RF signal; and
a pair of via holes comprising a first via hole and a second via hole extending through the platform, from the ground of the platform to the arms of the dipole antenna, wherein the first via hole is coupled to an RF feed and to a first arm of the dipole antenna and the second via hole is coupled to the ground at the bottom of the platform and to a second arm of the dipole antenna,
wherein the antenna module further comprises another dipole antenna with 90 degrees rotational symmetry compared to the dipole antenna to form a crossed dipole structure, wherein said another dipole antenna comprises another pair of via holes, said another pair of via holes comprising a third via hole and a fourth via hole extending through the platform, from the ground at the bottom of the platform to arms of said another dipole antenna, wherein the third via hole is coupled to the ground at the bottom of the platform and to a first arm of said another dipole antenna, and the fourth via hole is coupled to another RF feed and to a second arm of said another dipole antenna, and
wherein the antenna module is arranged to generate opposite handed circular polarization, where polarization direction depends on which of the two dipole antennas is a feeding dipole antenna or the antenna module is arranged to generate one-handed circular polarization using only feeding and shorting the via holes of the feeding dipole antenna and omitting, shorting, leaving open or matching to load the via holes of the dipole antenna that is not used as the feeding dipole antenna.