Cohu is a Diamond Sponsor and Exhibitor at the upcoming Korea Test Conference. In addition, Cohu will present a technical paper.
Come visit us at Cohu Booth to learn more about our product and service offerings.
Do not miss our expert presentation
Title: OTA Test Solutions for High Volume Production Test of AiP devices
Speaker: Jason Mroczkowski, Director RF Product Development and Marketing ISG, Cohu
Abstract: The variety of 5G Antenna in Package (AiP) devices and integrated antenna modules pose unique challenges to the production test cell. Test requirements call for Over the Air (OTA) test solutions in the mmWave (30 GHz – 100 GHz) frequency bands while most existing OTA solutions are designed only for the lab environment. This combined with the various antenna distribution and types including in custom packaging create challenges for defining production test hardware.
OTA test setups are also complicated by application variables, such as near field / far field, antenna integration level, and radiation orientation. The distance of the antenna from the device in the test setup could vary between a few millimeters to a few centimeters depending on the test frequency and whether it is tested in the near or for field environment. The antenna can be integrated at the die, package, or module level and the radiation direction of the antenna can be oriented to come out of the pad/ball side, over-mold side, or edge of the device or module. These variables can drive the test cell configuration beyond the norm and blur boundaries between the tester, contactor / probe head, and handler / prober to meet the test requirements.
This presentation will explore some unique integrated solutions for high volume production test of these leading-edge AiP devices. These unique interface solutions combine OTA and contacted test into a small environment that fits within the confines of the existing test cell. As will be shown, OTA test is realized through embedded antennae within the contactor / probe head or handler / probe interface, mmWave signals at various frequency bands are routed to the embedded antennae through waveguides, coplanar waveguides and/or connectors in the contactor / probe head and in the handler / prober interface.