Graduate Thesis Or Dissertation

 

A 2.4GHZ direct conversion mixer with offset cancellation Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/m613n1931

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  • Dynamic DC offset is one of the biggest problems preventing the implementation of single chip receivers. This thesis presents a 2.4GHz downconversion mixer designed to work with adaptive DC offset cancellation for a fully integrated direct conversion receiver. Offset can be removed by dynamically changing the PFET load bias in a Gilbert Cell type mixer. A dual-loop algorithm, which was developed in separate work, controls a current-steering DAC that dynamically changes the PFET load bias of the mixer. The mixer has a gain of 8dB, an IIP3 of l7dBm, and a noise figure of 15dB. In addition a CMOS RF Front-End incorporating the offset cancellation mixer is presented that meets the specifications for Bluetooth.
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  • File scanned at 300 ppi (Monochrome, 256 Grayscale) using Capture Perfect 3.0 on a Canon DR-9050C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
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