新型四路微带可重构双模滤波功率分配器设计与性能

180 浏览量更新于2024-08-26 收藏 1.66MB PDF 举报

本文档探讨了一种创新的四路微带集总元件可重构双模滤波功率分配器（Four-Way Microstrip Lumped-Element Reconﬁgurable Dual-Mode Filtering Power Divider, FPD），发表在2018年3月的《工业电子交易》(IEEE Transactions on Industrial Electronics)上。作者郑川明、许进、魏康（IEEE会员）和吴文（IEEE高级会员）共同提出了这个设计。该四路FPD的独特之处在于它具备两种工作模式：一是恒定的返回损耗（Constant Return Loss, CLR）下的四路功率分配器，二是高隔离度的停带滤波器（Stopband Filter, SBF）。最显著的特点是，这种器件无需开关就能在两种模式之间切换，只需选择合适的电压即可实现。这种切换操作简化了系统设计，提高了效率。设计的核心技术是通过一对对可变电容器调谐的LC谐振器来实现四路FPD的滤波性能调整。通过新颖的耦合方案，测量结果显示，该四路FPD的频率响应可以调谐在0.98至2.08 GHz之间，且返回损耗超过18 dB，频率调谐范围（Frequency Tuning Range, FTR）达到了72%。这意味着它具有非常宽广的频谱适应性，能够满足多个应用需求。除了作为宽带滤波FPD外，这种电路还有另一个创新之处，即作为SBF使用。与传统SBF通过断开二极管来获取隔离不同，该设计允许通过调节电路参数，如电容或电感，实现隔离度的控制。此外，电路设计中的交错结构（staggering）进一步优化了性能，提高了隔离度，在dc到5.7 GHz的范围内，测量的隔离度超过了19.5 dB。这篇研究论文介绍了一种高性能、可重构的微带滤波功率分配器，其灵活的工作模式和出色的频率调谐能力，对于无线通信系统和信号处理设备的设计具有重要的实用价值。这种技术的发展将推动滤波器和功率分配器领域的技术进步，并可能为未来的无线通信网络提供更高效、更具适应性的解决方案。

2590 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 65, NO. 3, MARCH 2018

Four-Way Microstrip Lumped-Element

Reconﬁgurable Dual-Mode Filter ing

Power Divider

Chuanming Zhu , Jin Xu, Wei Kang, Member, IEEE, and Wen Wu, Senior Member, IEEE

Abstract—In this paper, a novel four-way microstrip

lumped-element reconﬁgurable dual-mode ﬁltering power

divider (FPD) is proposed. The two operating states are a

four-way FPD with constant return loss, and a stopband ﬁl-

ter (SBF) with high isolation, respectively. This switchless

two operating states can be switched by selecting appro-

priate voltage without using switches. The tunable ﬁlter-

ing response of four-way FPD based on a novel coupling

scheme is realized by two pairs of varactor-tuned LC res-

onators. The measured four-way FPD can be tuned from 0.98

to 2.08 GHz with return loss better than 18 dB. Its frequency

tuning range (FTR) is 72%. The measured isolation is better

than 19.5 dB from dc to 5.7 GHz. Apart from the bandpass

FPD application, the proposed circuit can also be utilized

as an SBF, which is different that of conventional SBF by

tuning off diodes to obtain isolation. By staggering the res-

onant frequencies of four lumped-element resonators and

decrease mutual coupling between resonators, an SBF with

high isolation can be obtained between two nonadjacent

ports. The measured isolation is better than 40 dB from dc

to 6 GHz and better than 45 dB from 1.1 to 4.8 GHz. The

proposed four-way reconﬁgurable dual-mode FPD exhibits

wide isolation bandwidth and FTR, good return loss, high

isolation level, and compact size.

Index Terms—Four-way, lumped-element, switchless,

stopband ﬁlter (SBF), tunable ﬁltering power divider (FPD).

I. INTRODUCTION

ODAY, compact size, low cost, and integration are highly

desired for radio frequency (RF) and microwave industry.

Manuscript received March 20, 2017; revised June 6, 2017 and July 12,

2017; accepted July 20, 2017. Date of publication August 17, 2017; date

of current version December 15, 2017. This work was supported in part

by the State Key Laboratory of Millimeter Waves open research program

under Grant K201614, in part by the National Natural Science Foundation

of China under Grant 61401358, in part by the Young Talent Fund of

University Association for Science and Technology in Shaanxi under

Grant 20160202, and in part by the Natural Science Basic Research Plan

in Shaanxi Province of China under Grant 2017JM6034. (Corresponding

author: Chuanming Zhu.)

C. Zhu, W. Kang, and W. Wu are with the Ministerial Key Laboratory of

JGMT, Nanjing University of Science and Technology, Nanjing 210094,

China (e-mail: zcmmzr@163.com; 78900447@qq.com; wuwen@mail.

njust.edu.cn).

J. Xu is with the School of Electronics and Information, Northwest-

ern Polytechnical University, Xi’an 710072, China, and also with the

State Key Laboratory of Millimeter Waves, Southeast University, Nanjing

210096, China (e-mail: xujin2njust@126.com).

Color versions of one or more of the ﬁgures in this paper are available

online at http://ieeexplore.ieee.org.

Digital Object Identiﬁer 10.1109/TIE.2017.2740854

Power dividers play an important role in RF and microwave sys-

tem for allocating one signal to two or more terminations, such

as in the feeding networks for antenna arrays, mixers, or other

measurement system. Extensive examples of passive power di-

viders (PDs) featuring a variety of advantages are conducted,

such as the abilities to achieve dual frequency [1]–[3], to realize

arbitrary power [12], and to obtain good isolation [13]. How-

ever, most of reported works are designed at ﬁxed frequency

and the isolation bandwidth (BW) for two neighboring out-

put ports is relatively narrower. In microwave industry, tunable

BPFs are demanded due to its ﬂexibility of bypassing the de-

sired RF signal. Several tunable ﬁltering power dividers (FPDs)

are reported to realize tunable center frequency (CF) [14]–[15]

or tunable BW [16]. However, above tunable FPDs i n [14]–[16]

are focused on two-way applications. Moreover, most of these

reported components are based on distributed resonators, which

always occupy a relatively large circuit area and also are hard

to be division ratio [4], to obtain four-way and out of phase [5],

and to achieve miniaturization [6]. However, the numbers of the

output way of PD in [1]–[4] is limited two and the passband

selectivity in [5]–[6] is relatively poor. The passband selectivity

of four-way PD can be solved by cascading four-way PD and

bandpass ﬁlters [7]–[8], which leads to large circuit sizes. To

reduce circuit sizes, lots of four-way ﬁltering PDs with various

advantages are reported, such as the abilities to realize wide BW

[9]–[11], to realize frequency-dependent couplings compatible

with modern integrated circuit process.

In RF front-end, bandstop ﬁlters [17]–[21] are desired to

eliminate interference and are usually cascaded with bandpass

ﬁlters and PDs, as shown in Fig. 1(a), which may lead to more

mismatch loss and large circuit area. To increase the integration,

some literatures are reported to achieve both bandstop and all-

pass state [19] or ﬁltering switches [20]. However, little work is

found to integrate tunable BPF, switch, and four-way PD into a

single circuit simultaneously. The concept of full-way reconﬁg-

urable dual-mode FPD is shown in Fig. 1(b). The tunable FPD

and bandstop ﬁlter state can be switched by selecting appropriate

voltage without using switches.

In this paper, a four-way microstrip lumped-element FPD is

proposed. Three functional blocks between transmitter/receiver

(T/R) front end, i.e., tunable BPF, switches, and four-way PD,

are effectively integrated into a single circuit. Thus, less mis-

match loss, low insertion loss, and more compactness can be

achieved. With the utilization of two pairs of coupled LC

See http://www.ieee.org/publications

standards/publications/rights/index.html for more information.

下载后可阅读完整内容，剩余7页未读，立即下载

weixin_38709139

粉丝: 7
资源: 935

新型四路微带可重构双模滤波功率分配器设计与性能

具有可调频率的微带四路可重构单/双/宽带滤波功率分配器

具有混合微带/方形缺陷接地结构的可重构双频带滤波功率分配器，具有超宽阻带

微带四路可重构滤波功率分配器：中心频率与带宽可调

超宽阻带可重构双频滤波功率分配器：混合微带/方形缺陷接地结构

UFB_PR_LP.rar_PR滤波器_图像重构_滤波 图像_滤波器组_重构

caiyangdingli.rar_ caiyangdingli_f-x滤波_带通信号重构_采样 重构_采样重构滤波

微带可重构天线研究

使用片上寄生元件的微带天线方向图重构-研究论文

微机电基础技术-微带制作微波元件

小波重构+高频滤波

最新资源

UFB_PR_LP.rar_PR滤波器_图像重构_滤波图像_滤波器组_重构

caiyangdingli.rar_ caiyangdingli_f-x滤波_带通信号重构_采样重构_采样重构滤波