Qualcomm Incorporated

Thanh Duong

Tao Wang

Andrew Lejman

Marvin Leroy Vis

Julio Zegarra

Joshua Britton

Thomas J Funk

Larry D Flowers

Ali Morshedi

Erez Avigdor Falkenstein

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.

Near field wireless communication device testing using dual-polarity transducer

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San Diego, CA, United States of America

Thanh Duong