US 11,815,539 B2
Multiple-band compact, near-field-to-far-field and direct far-field test range
David Agapito Sanchez Hernandez, Murcia (ES)
Assigned to EMITE INGENIERIA S.L., Fuente Alamo de Murcia (ES)
Appl. No. 17/283,448
Filed by EMITE INGENIERIA S.L., Fuente Alamo de Murcia (ES)
PCT Filed Oct. 9, 2018, PCT No. PCT/ES2018/070655
§ 371(c)(1), (2) Date Apr. 7, 2021,
PCT Pub. No. WO2020/074752, PCT Pub. Date Apr. 16, 2020.
Prior Publication US 2021/0341528 A1, Nov. 4, 2021
Int. Cl. G01R 29/10 (2006.01); H01Q 1/38 (2006.01); H01Q 13/02 (2006.01); H01Q 15/14 (2006.01); H01Q 21/24 (2006.01); H04B 7/0413 (2017.01)
CPC G01R 29/105 (2013.01) [H01Q 1/38 (2013.01); H01Q 13/0208 (2013.01); H01Q 15/14 (2013.01); H01Q 21/24 (2013.01); H04B 7/0413 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A hybrid compact, near- and far-field test range system (1) for providing several wavefronts at different frequency bands within a quiet test zone in which an antenna set of devices under test are placed, using three different test approaches (CATR, NFTF and DFF) in a simultaneous manner, and comprising:
An anechoic chamber (2) with a door (3), wheels (4) and absorbing material (5) covering the internal side of its walls, ceilings, door and floor,
A curved reflector (6) with a lateral compact-antenna-test-range primary feed source antenna set (7) with one or several primary feed source antenna elements (9) of either the singe- or dual-polarized circular waveguide corrugated antenna horn type or the printed array type, and its CATR-primary-feed support tower (8),
An antenna set under test (AUT) or devices under test DUT) (10) of either the gNodeB type or the User Equipment type, with its AUT/DUT tower and turntable support and positioning structure (11), located at a quiet test zone (12) and capable of providing roll, elevation and azimuth rotation,
A direct far-field (DFF) and near-field-to-far-field (NFTF) secondary feed source antenna set (13), with its DFF/NFTF support tower (14) and with one or several primary feed source antenna elements (15) of either of the single- or dual-polarized circular waveguide corrugated antenna horn type or the printed array type, with their apertures pierced (16) at the center of the curved reflector and optionally caped (17) by metal pieces or placed in front of the reflector,
A set of electric cables (18), Radiofrequency cables (19), Ethernet cables (20) and Fiber Optic cables (21),
A signal analyzer equipment (22) located either inside or outside of the chamber.