Low-Cost Test of An RF Mixer For Wi-Fi Applications

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Low-Cost Test of An RF Mixer For Wi-Fi Applications

Journal Title: IOSR Journals (IOSR Journal of Electrical and Electronics Engineering) - Year 2018, Vol 13, Issue 1

Abstract

This Paper Proposes A Variety Of On-Chip Monitors In Order To Implement A Low-Cost Test Methodology For Circuits And Radio-Frequency (Rf) Systems After The High Volume Production Stage. It Is Not The First Time That We Publish Such Monitors But The Aim Of Our Work Is To Extend The Library Of Rf Circuits Circuit Under Test (Rf Cut Lib) On Which Our Sensors Are Evaluated. Notice That For Each Rf Circuits The Proposed Monitors Must Be Adapted To Be Able To Present A High Test Coverage. The Monitors Are Called "Dummy Circuits" And "Process Monitors". These Monitors Have No Electrical Contact With The Circuit Under Test And Do Not Touch The Signal Path. In Fact, They Are Placed At The Layout Level Near The Circuit Under Test. Consequently, During The Manufacturing Process, They Follow Similar Process Variations As Those Of The Circuit Under Test. During The Test Step, The Performance Of The Rf Circuit Will Be Predicted From The Dc Measurements At The Output Of These Monitors Using The Alternative Test Technique. We Also Designed Other Monitors That Are Dc Probes, An Envelope Detector And A Current Sensor. These Monitors Are Physically Connected To The Various Critical Nodes Of The Circuit Under Test In Order To Detect Catastrophic Faults That May Occur In The Circuit Due To An Imperfection In The Manufacturing Process. The Introduction Of These Monitors Degrades The Performance Of The Circuit Under Test Which Requires A Co-Design Effort To Meet The Pre-Defined Specifications. The Proposed Monitors Will Be Now Evaluated Using Post-Layout Simulations On A Rf 2.4 Ghz Mixer Used For Wifi Applications.

Authors and Affiliations

Louay Abdallah

Keywords

EP ID EP388679
DOI 10.9790/1676-1301048290.
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