US 12,451,604 B2
Multi-band antenna
Changfu Chen, Suzhou (CN); and Pengfei Guo, Suzhou (CN)
Assigned to Outdoor Wireless Networks LLC, Richardson, TX (US)
Filed by Outdoor Wireless Networks LLC, Claremont, NC (US)
Filed on Jan. 5, 2023, as Appl. No. 18/093,361.
Claims priority of application No. 202210007640.X (CN), filed on Jan. 6, 2022.
Prior Publication US 2023/0216197 A1, Jul. 6, 2023
Int. Cl. H01Q 21/26 (2006.01); H01Q 5/364 (2015.01)
CPC H01Q 5/364 (2015.01) [H01Q 21/26 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A multiband antenna that extends in the longitudinal direction, the multiband antenna comprising:
a first column of radiating elements mounted on a base surface of a reflecting plate, which is configured to operate in a first operating frequency band and comprises a plurality of first radiating elements arranged along the longitudinal direction;
a second column of radiating elements mounted on the base surface of the reflecting plate, which is configured to operate in a second operating frequency band that is different from the first operating frequency band and comprises a plurality of second radiating elements arranged along the longitudinal direction; and
a first fence and a second fence located on both sides of the reflecting plate that extend forward from the base surface of the reflecting plate, wherein the first column of radiating elements and the second column of radiating elements are arranged in between the first fence and the second fence, the first fence and the second fence respectively comprise a frequency selective surface with a passband and a stopband, the passband covers at least the first operating frequency band, and the stopband covers at least the second operating frequency band,
wherein the frequency selective surface is configured to reflect electromagnetic waves in the second operating frequency band.