A Novel Hybrid Fast Switching Adaptive No Delay Tanlock Loop Frequency Synthesizer

TL;DR

This paper introduces a hybrid frequency synthesizer combining a tanlock loop with no delay, offering fast switching, wide locking range, and robust jitter performance, outperforming conventional methods especially in Doppler environments.

Contribution

The paper proposes a novel hybrid NDTL frequency synthesizer with enhanced switching speed, wider locking range, and improved jitter performance compared to traditional TDTL synthesizers.

Findings

Achieves fast switching and acquisition times.

Demonstrates wide locking range and robust jitter performance.

Outperforms conventional TDTL synthesizers by orders of magnitude.

Abstract

This paper presents a new fast switching hybrid frequency synthesizer with wide locking range. The hybrid synthesizer is based on the tanlock loop with no delay block (NDTL) and is capable of integer as well as fractional frequency division. The system maintains the in-lock state following the division process using an efficient adaptation mechanism. The fast switching and acquisition as well as the wide locking range and the robust jitter performance of the new hybrid NDTL synthesizer outperforms conventional time-delay tanlock loop (TDTL) synthesizer by orders of magnitude, making it attractive for synthesis even in Doppler environment. The performance of the hybrid synthesizer was evaluated under various conditions and the results demonstrate that it achieves the desired frequency division.