Filter banks

1-1.7 GHz Single-Voltage-Controlled Tunable MMIC BPF With Over 45 dB Rejection to 30 GHz Using Tapped Inductor Technique

1-1.7 GHz Single-Voltage-Controlled Tunable MMIC BPF With Over 45 dB Rejection to 30 GHz Using Tapped Inductor Technique 150 150

Abstract:

This paper presents a novel fourth-order single-voltage-controlled (SVC) tunable monolithic microwave integrated circuit (MMIC) bandpass filter (BPF) for tunable filter bank applications. Utilizing the tapped inductor technique (TIT), the proposed filter achieves compact magnetic coupling with reduced loss, avoiding the use of bulky inductor-or transformer-based coupling structures. The filter demonstrates …

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A 475-nW Area-Efficient Programmable Analog Feature Extraction Filterbank for Audio Classification

A 475-nW Area-Efficient Programmable Analog Feature Extraction Filterbank for Audio Classification 150 150

Abstract:

Audio classification in edge devices has many applications and can be implemented at varying levels of complexity, typically consisting of a feature extractor followed by a classifier. Such devices are often always-on, constantly listening to their surroundings, and have a small form factor; therefore, they require low-power operation and high …

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