US 12,148,971 B2
Radio frequency device
Alexander Gäbler, Darmstadt (DE)
Assigned to BEIJING BOE SENSOR TECHNOLOGY CO., LTD., Beijing (CN)
Appl. No. 17/761,120
Filed by BEIJING BOE SENSOR TECHNOLOGY CO., LTD., Beijing (CN)
PCT Filed Sep. 17, 2020, PCT No. PCT/EP2020/075941
§ 371(c)(1), (2) Date Mar. 16, 2022,
PCT Pub. No. WO2021/053056, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 19198156 (EP), filed on Sep. 18, 2019.
Prior Publication US 2022/0407208 A1, Dec. 22, 2022
Int. Cl. H01P 5/107 (2006.01); H01P 3/08 (2006.01); H01P 3/12 (2006.01)
CPC H01P 5/107 (2013.01) [H01P 3/081 (2013.01); H01P 3/12 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A radio frequency device with a transition unit (1) providing a radio frequency signal transition between a radio frequency hollow waveguide system (2) and a planar transmission line (3), the radio frequency device comprising
a substrate layer arrangement (15) with the planar transmission line (3) arranged on a first surface (14) of a first substrate layer (4) of the substrate layer arrangement (15),
wherein the transition unit (1) comprises a transition section (22) of the transmission line (3) that is configured as a radio frequency signal transition pattern, and
wherein the transition unit (1) further comprises an end section (11, 20) of the waveguide system (2) for radio frequency electromagnetic waves that is attached to the substrate layer arrangement (15) and that superposes the radio frequency signal transition pattern,
wherein the transition unit (1) comprises two or more transition sections (22) of a corresponding number of transmission lines (3) that are arranged adjacent to each other,
wherein the hollow waveguide system (2) comprises a distribution section wherein one input waveguide (5, 8) is separated into one dedicated output waveguide (10, 19) for each of the transition sections (22),
wherein for each of the transition sections (22) of the transmission lines (3) a corresponding end section (11, 20) of a respective output waveguide (10, 19) is directed perpendicular to the first surface (14) of the first substrate layer (4) of the substrate layer arrangement (15),
wherein for each end section (11, 20) an open end of the end section (11, 20) of the waveguide system (2) superposes the corresponding transition section (22), and
wherein the two or more end sections (11, 20) of the waveguide system (2) are arranged adjacent to each other in order to provide for favorable boundary conditions for electromagnetic wave propagation that result in reduced radio frequency signal power leakage from the transition unit (1) when compared to a transition unit with only one end section (11, 20) of the waveguide system (2);
several or all end sections (11, 20) of the output waveguides (10, 19) that are attached to the substrate layer arrangement (15) are arranged along a straight line; and
the transition unit (1) comprises for each end of a row (21) one waveguide section element (25) arranged adjacent to the last output waveguide (19) within the row (21).