COPLANAR MMIC ACTIVE BANDPASS-FILTERS USING NEGATIVE-RESISTANCE CIRCUITS

Authors
HOPF BP WOLFF I GUGLIELMI M
Citation
Bp. Hopf et al., COPLANAR MMIC ACTIVE BANDPASS-FILTERS USING NEGATIVE-RESISTANCE CIRCUITS, IEEE transactions on microwave theory and techniques, 42(12), 1994, pp. 2598-2602
Citations number
27
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE transactions on microwave theory and techniques → ACNP
ISSN journal
00189480
Volume
42
Issue
12
Year of publication
1994
Part
2
Pages
2598 - 2602
Database
ISI
SICI code
0018-9480(1994)42:12<2598:CMABUN>2.0.ZU;2-H
Abstract
Several active bandpass filters for 1.8 and 5.5 GHz have been develope d with the coplanar line technique using negative resistance circuits. For example, a first-order active bandpass filter at 5.5 GHz and two second-order bandpass filters at 1.8 GHz are presented, where one of t he 1.8 GHz filters is a fixed center frequency filter and the other a tunable one. These 1.8 GHz filters have a 3 dB bandwidth of 110 MHz, T he tuning range of the center frequency is 200 MHz.