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Design of an integrated RF filter for the direct digitization front end of a dual GPS/GLONASS software radio receiver

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2 Author(s)
C. Brinegar ; Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA ; K. Naishadham

A software radio can be defined as a receiver implementation in which the analog-to-digital (ADC) converter is positioned as close to the antenna as possible, so that the resulting samples can be processed using a programmable microprocessor. Compared to the conventional superheterodyne implementation, this direct digitization front-end eliminates additional components used for frequency translation. A key component of such a front-end is the RF filter which facilitates band-pass sampling of the incoming signal. In this paper, we present the design of a wide-band integrated filter which passes both the GPS and GLONASS satellite bands using a minimum number of analog components. The filter is realized on a microstrip and simulated to test the baseband specifications and signal integrity

Published in:

Radio and Wireless Conference, 1998. RAWCON 98. 1998 IEEE

Date of Conference:

9-12 Aug 1998