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Media type:
E-Article
Title:
TUNABLE ACTIVE FILTERS FOR RF AND MICROWAVE APPLICATIONS
Contributor:
PANTOLI, LEONARDO;
STORNELLI, VINCENZO;
LEUZZI, GIORGIO
Published:
World Scientific Pub Co Pte Lt, 2014
Published in:
Journal of Circuits, Systems and Computers, 23 (2014) 6, Seite 1450088
Language:
English
DOI:
10.1142/s0218126614500881
ISSN:
0218-1266;
1793-6454
Origination:
Footnote:
Description:
In this paper, we present a low-voltage tunable active filter for microwave applications. The proposed filter is based on a single-transistor active inductor (AI), that allows the reduction of circuit area and power consumption. The three active-cell bandpass filter has a 1950 MHz center frequency with a -1 dB flat bandwidth of 10 MHz (Q ≈ 200), a shape factor (30–3 dB) of 2.5, and can be tuned in the range 1800–2050 MHz, with constant insertion loss. A dynamic range of about 75 dB is obtained, with a P1dB compression point of -5 dBm. The prototype board, fabricated on a TLX-8 substrate, has a 4 mW power consumption with a 1.2 V power supply voltage.