公开(公告)号：US11342961B1

公开(公告)日：2022-05-24

申请号：US17141025

申请日：2021-01-04

Applicant: QUALCOMM Incorporated

Inventor： Marvin Leroy Vis ,  Julio Zegarra ,  Thanh Duong ,  Thomas Funk ,  Erez Avigdor Falkenstein ,  Larry Flowers ,  Andrew Lejman ,  Joshua Britton ,  Tao Wang ,  Ali Morshedi

IPC: H04B17/00 ,  H04B5/00 ,  H01P5/103 ,  H04B17/29

Abstract: Methods and apparatus are disclosed for near field radio-frequency (RF) testing of devices, particularly user equipment (UEs) capable of millimeter-wave (mmWave) transmissions. An exemplary test apparatus is described that uses a transducer to facilitate near field over-the-air testing of UEs in the mmWave transmission band. The transducer may be an orthomode transducer and may include a dual-polarity port positioned in the reactive near field of an antenna of a device under test (DUT). For UE signal transmission tests, the orthomode transducer splits test signals received from the antenna of the DUT via the dual-polarity port into a pair of single-polarity RF signals. The single-polarity RF signals are separately fed through a pair of waveguide-to-coaxial adaptors into separate coaxial cables, which feed coaxial transmission versions of the single-polarity RF signals to test equipment for analysis. UE signal reception tests are also described that utilize the same or different orthomode transducer.