Loss-Gain Equalized Reconfigurable Phaser for Dynamic Radio Analog Signal Processing (R-ASP)

TL;DR

This paper introduces a reconfigurable radio analog signal processing device that uses loss-gain equalization to achieve tunable group delay, demonstrated through theoretical analysis and experimental validation.

Contribution

The paper presents a novel lumped loss-gain reconfigurable phaser with easy tuning and equalization, enabling dynamic group delay control in R-ASP systems.

Findings

Successfully demonstrated reconfigurable group delay with up-chirp and down-chirp responses.

Theoretical transfer function derived for the loss-gain equalized phaser.

Experimental validation with single and cascaded loss-gain pairs.

Abstract

We present a loss-gain equalized reconfigurable phaser for dynamic radio analog signal processing (R-ASP). Such a phaser provides real-time tunable group delay response with all-pass transmission. We propose a lumped loss-gain implementation, where tuning and equalization are mostly easily achieved. A theoretical study derives the transfer function and the fundamental characteristics of the device. The phaser is finally experimentally demonstrated, first using a single loss-gain pair and finally a three cascaded loss-gain pair structure with full reconfigurability , where up-chirp and down-chirp group delays are shown for illustration. It is expected that this phaser will find wide applications in radio analog signal processing (R-ASP) systems requiring dynamic adaptability.