Recent advances in microwave active filter design. Part 1: Low-frequency techniques and noise optimization

✍ Scribed by Laurent Billonnet; Bernard Jarry; Stephen E. Sussman-Fort; Eric Rius; Gérard Tanné; Christian Person; Serge Toutain

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 526 KB
• Volume: 12
• Category: Article
• ISSN: 1096-4290
• DOI: 10.1002/mmce.10003

✦ Synopsis

This two-part article presents a representative sample of recent advances in microwave active filter design. In part one, we discuss design techniques based on both analog and digital low-frequency methods that have been adapted to microwaves. From circuits with analog origins, we present simulated results, with some experimental verification, for a frequency-dependent negative resistance (FDNR) and active-inductance MMIC bandpass filters. From circuits with digital origins, we present experimental results for recursive filters, including MMIC bandpass and bandstop structures as well as higher-order cascaded sections. Part one concludes with a discussion of the noise-wave formalism and experimental results for active-recursive and tunable ring-resonator filters with minimum noise figure.