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Wireless Personal Communications Project, RF
David Baietto, James Menne, Todd Ciccone, Keith George, and Timothy Hahn
Advisors: Drs. S. N. Prasad, B. D. Huggins, J.W. Sennott

With massive expansion of personal communications services (PCS), our airways will become increasingly crowded, and bandwidth efficient techniques will become essential. Furthermore, PCS systems will be required to operate within areas where the propagation medium is far from ideal. The spread spectrum modulation technique appears attractive in this environment. In this project a complete one-way data communication system operating at 2.4 GHz was designed, built and tested. The project is broken into two divisions: Radio Frequency and Digital Systems. The primary goal of the RF division was development of the RF link transmission and reception components at 2.4 GHz. Components include PLL synthesizers, mixers, RF preamp, and stable 10 MHz oscillators. The RF system output is down converted to the 1574 MHz band to facilitate the usage of Global Positioning System (GPS) signal correlator hardware. Considered and evaluated in the RF design were path loss, equivalent noise figure, and oscillator frequency stability.

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