Design of Ultra-Wide Band Flat Negative Group Delay Circuit

GU Tao-chen; WAN Fa-yu; RAVELO Blaise

doi:10.12263/DZXB.20240185

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Design of Ultra-Wide Band Flat Negative Group Delay Circuit

PAPERS | 更新时间：2025-12-11

- Design of Ultra-Wide Band Flat Negative Group Delay Circuit
- ACTA ELECTRONICA SINICA Vol. 52, Issue 12, Pages: 3967-3975(2024)
- 作者机构：
  
  南京信息工程大学电子与信息工程学院，江苏南京 210044
- 作者简介：
- 基金信息：
  
  National Key Research and Development Program of China(2022YFE0122700);National Natural Science Foundation of China(62371241;62350610268);Beijing Natural Science Foundation(L233002);Program of China Scholarship Council(202308320302)
- DOI：10.12263/DZXB.20240185
  CLC： TN70;
- Received：27 February 2024，
  
  Revised：2024-05-21，
  
  Published：25 December 2024
- 稿件说明：
移动端阅览
顾韬琛, 万发雨, RAVELO Blaise. 超宽带平坦负群时延电路设计[J]. 电子学报, 2024, 52(12): 3967-3975.

GU Tao-chen, WAN Fa-yu, RAVELO Blaise. Design of Ultra-Wide Band Flat Negative Group Delay Circuit[J]. Acta Electronica Sinica, 2024, 52(12): 3967-3975.
顾韬琛, 万发雨, RAVELO Blaise. 超宽带平坦负群时延电路设计[J]. 电子学报, 2024, 52(12): 3967-3975. DOI：10.12263/DZXB.20240185

GU Tao-chen, WAN Fa-yu, RAVELO Blaise. Design of Ultra-Wide Band Flat Negative Group Delay Circuit[J]. Acta Electronica Sinica, 2024, 52(12): 3967-3975. DOI：10.12263/DZXB.20240185

摘要

本文提出了一种具有超宽带（Ultra-Wide Band，UWB）平坦负群时延响应的带通（BandPass，BP）负群时延（Negative Group Delay，NGD）电路设计.基于阶梯阻抗谐振（Stepped Impedance Resonator，SIR）结构设计了一种超宽带平坦负群时延无源电路.研究了电路的

参数模型和负群时延响应模型.电路结构紧凑，总尺寸为11 mm × 81 mm，电尺寸仅为0.13

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=73222722&type=

3.21733332

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=73222729&type=

2.53999996

×1.01

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=73222730&type=

3.21733332

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=73222731&type=

2.53999996

.经过测量，所提出的NGD电路在中心频率2.14 GHz下能实现

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=73222732&type=

2.28600001

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=73222733&type=

7.36600018

ns的负群时延值，负群时延带宽达1.28 GHz，相对带宽61%，平坦负群时延带宽达1.01 GHz，相对带宽48%，通带内的平坦度较好，群时延波动仅为±0.05 ns，与同类宽带平坦NGD电路相比，本文所提出的SIR NGD电路平坦NGD带宽提高了约215%.平坦带宽内回波损耗优于17 dB，最高为18.8 dB.

Abstract

A fundamental theory of novel ultra-wide band (UWB) bandpass (BP) negative group delay (NGD) topology is established in this paper. The microwave circuit under study consists of lossy transmission lines and stepped impedance resonators. The flat NGD topology is constructed using fully distributed elements. The ABCD- and

-parameter models are formulated to derive the NGD optimal values and bandwidth. In order to verify the theoretical feasibility

NGD prototypes are designed

fabricated

and measured. The flat BP-NGD microstrip circuit has a compact size of 11 mm × 81 mm (0.13 λ

× 1.01 λ

) with a NGD center frequency of

=2.14 GHz. Excellent agreement has been observed between experimental and theoretical results

revealing Δ

NGD

=1.28 GHz (BW

NGD

=61%

) NGD bandwidth and

=-0.52 ns NGD value. Furthermore

within the NGD frequency band

the flat BP-NGD prototype presents a good performance in terms of bandwidth about Δ

NGD

=1.01 GH

flat-NGD

=48%

with

±0.05 ns group delay fluctuation. Compared with similar broadband flat NGD circuits

the flat NGD bandwidth of the SIR NGD circuit proposed in this article is increased by about 215%. The flat BP-NGD prototype return loss at the center frequency is better than 18.8 dB.

关键词

Keywords

references

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