Compact input-reflectionless balanced bandpass filter with flexible bandwidth using three-line coupled structure

Yahui ZHU; Jing CAI; Wei QIN; Wenwen YANG; Jianxin CHEN

doi:10.1631/FITEE.2200261

Your Location：

Home >

Browse articles >

Compact input-reflectionless balanced bandpass filter with flexible bandwidth using three-line coupled structure

Regular Papers | Updated：2023-02-27

- Compact input-reflectionless balanced bandpass filter with flexible bandwidth using three-line coupled structure
  Enhanced Publication
- 基于三线耦合结构的具有灵活带宽的紧凑型平衡式输入无反射带通滤波器
- Frontiers of Information Technology & Electronic Engineering Vol. 24, Issue 2, Pages: 314-326(2023)
- Affiliations：
  
  1.School of Information Science and Technology, Nantong University, Nantong 226019, China
  2.Research Center for Intelligent Information Technology, Nantong University, Nantong 226019, China
- Author bio：
  
  ‡Corresponding author
- Funds：
- DOI：10.1631/FITEE.2200261
  CLC： TN015
- Published：0 February 2023，
  
  Received：18 June 2022，
  
  Revised：30 October 2022，
- Accepted：
Scan QR Code
YAHUI ZHU, JING CAI, WEI QIN, et al. Compact input-reflectionless balanced bandpass filter with flexible bandwidth using three-line coupled structure. [J]. Frontiers of information technology & electronic engineering, 2023, 24(2): 314-326.
DOI：

YAHUI ZHU, JING CAI, WEI QIN, et al. Compact input-reflectionless balanced bandpass filter with flexible bandwidth using three-line coupled structure. [J]. Frontiers of information technology & electronic engineering, 2023, 24(2): 314-326. DOI： 10.1631/FITEE.2200261.

摘要

本文提出一种基于三线耦合结构的具有灵活带宽的紧凑型平衡式输入无反射带通滤波器。在差模模式下，带通响应由三线耦合结构实现，同时三线耦合结构的输入耦合馈线被输入吸收网络复用。带通滤波部分和吸收部分实现了良好的融合，有效地减小了电路尺寸，并且两部分的带宽独立可控，进而使得该滤波器的差模响应带宽具有灵活可控的特性。此外，首次对两部分的带宽比进行详细分析，以获得通带平坦度与无反射性能的良好折衷。因此，该协同设计的输入无反射差模带通响应具有易于优化的特点。同时，输入端的吸收网络还实现了宽频带内的共模噪声吸收。为了验证该设计方法，设计了一款尺寸为0.52

×0.36

的平衡式输入无反射滤波器，测量范围为0–7.0 GHz。测得差模响应的中心频率为2.45 GHz，3 dB相对带宽为31.4%。实测和仿真结果展现了良好的一致性，并且该滤波器具有0.43 dB的低插入损耗、较宽的差模上阻带（超过20 dB的抑制水平至2.72倍频）以及宽带的差模无反射和共模噪声吸收（吸收相对带宽为285.7%）等优点。

Abstract

A compact input-reflectionless balanced bandpass filter (BPF) with flexible bandwidth (BW) using a three-line coupled structure (TLCS) is presented in this paper. For the differential mode (DM)

the TLCS is applied to achieve the bandpass response; meanwhile

the input coupled-feed line of the TLCS is reused in the input absorption network. This design shows a good fusion of the absorptive and BPF sections

effectively reducing the circuit size

and the BWs of the two sections that can be controlled separately result in a flexibly controllable DM response BW of the proposed input-reflectionless balanced BPF. Detailed analyses of the ratio of the two-part BWs have been given for the first time

which is vital for the passband flatness and reflectionless feature. In the codesign of this work

the input-reflectionless DM bandpass response can be optimized easily

while wideband common mode (CM) noise absorption is achieved by the input absorption network. To verify the design method

a prototype with a compact layout (0.52

×0.36

) is designed and measured in the 0‍‒‍7.0 GHz range. The DM center frequency (

) is 2.45 GHz with a measured 3 dB fractional bandwidth of 31.4%. The simulation and measurement results with good agreement are presented

showing good performance

e.g.

low insertion loss (0.43 dB)

wide upper stopband for the DM bandpass response (over 20 dB rejection level up to 2.72

)

and wideband DM reflectionless and CM noise absorption (fractional absorption bandwidth of 285.7%).

关键词

输入无反射滤波器平衡式带通滤波器差模共模三线耦合结构

Keywords

Input-reflectionless filterBalanced bandpass filter (BPF)Differential mode (DM)Common mode (CM)Three-line coupled structure (TLCS)

references

Bi XJ, Zeng X, Xu QF, 2020. Slotline-based balanced filter with ultra-wide stopband and high selectivity. IEEE Trans Circ Syst II Exp Briefs, 67(3):460-464. https://doi.org/10.1109/TCSII.2019.2914072https://doi.org/10.1109/TCSII.2019.2914072

Cao YF, Zhang Y, Zhang XY, 2020. Filtering antennas: from innovative concepts to industrial applications. Front Inform Technol Electron Eng, 21(1):116-127. https://doi.org/10.1631/FITEE.1900474https://doi.org/10.1631/FITEE.1900474

Chen CP, Oda J, Kamata K, et al., 2013. An iterative synthesis scheme for wideband filter based on parallel-coupled three-line. IEEE European Microwave Conf, p.889-892. https://doi.org/10.23919/EuMC.2013.6686800https://doi.org/10.23919/EuMC.2013.6686800

Chen JX, Zhan Y, Xue Q, 2015. Novel LTCC distributed-element wideband bandpass filter based on the dual-mode stepped-impedance resonator. IEEE Trans Compon Packag Manuf Technol, 5(3):372-380. https://doi.org/10.1109/TCPMT.2015.2401023https://doi.org/10.1109/TCPMT.2015.2401023

Chen JX, Zhan Y, Qin W, et al., 2016. Analysis and design of balanced dielectric resonator bandpass filters. IEEE Trans Microw Theory Techn, 64(5):1476-1483. https://doi.org/10.1109/TMTT.2016.2546260https://doi.org/10.1109/TMTT.2016.2546260

Chen X, Yang T, Chi PL, 2021. Arbitrary-order balanced filter with reflectionless characteristics for both common- and differential-mode signals. IEEE Microw Wirel Compon Lett, 31(6):553-556. https://doi.org/10.1109/LMWC.2021.3068469https://doi.org/10.1109/LMWC.2021.3068469

Fan MY, Song KJ, Yang L, et al., 2021a. Frequency-reconfigurable input-reflectionless bandpass filter and filtering power divider with constant absolute bandwidth. IEEE Trans Circ Syst II Exp Briefs, 68(7):2424-2428. https://doi.org/10.1109/TCSII.2021.3049417https://doi.org/10.1109/TCSII.2021.3049417

Fan MY, Song KJ, Yang L, et al., 2021b. Frequency-tunable constant-absolute-bandwidth single-/dual-passband filters and diplexers with all-port-reflectionless behavior. IEEE Trans Microw Theory Techn, 69(2):1365-1377. https://doi.org/10.1109/TMTT.2020.3040481https://doi.org/10.1109/TMTT.2020.3040481

Feng WJ, Che WQ, 2012. Wideband balanced bandpass filter based on three-line coupled structure. Electron Lett, 48(16):1006-1008. https://doi.org/10.1049/el.2012.0448https://doi.org/10.1049/el.2012.0448

Feng WJ, Che WQ, Shi YR, et al., 2019. Balanced rat-race couplers with wideband common-mode suppression. IEEE Trans Microw Theory Techn, 67(12):4724-4732. https://doi.org/10.1109/TMTT.2019.2946158https://doi.org/10.1109/TMTT.2019.2946158

Feng WJ, Pan BS, Zhu HS, et al., 2021. High performance balanced bandpass filters with wideband common mode suppression. IEEE Trans Circ Syst II Exp Briefs, 68(6):1897-1901. https://doi.org/10.1109/TCSII.2020.3044092https://doi.org/10.1109/TCSII.2020.3044092

Gómez-García R, Muñoz-Ferreras JM, Psychogiou D, et al., 2018. Balanced symmetrical quasi-reflectionless single-and dual-band bandpass planar filters. IEEE Microw Wirel Compon Lett, 28(9):798-800. https://doi.org/10.1109/LMWC.2018.2856400https://doi.org/10.1109/LMWC.2018.2856400

Gómez-García R, Muñoz-Ferreras JM, Psychogiou D, 2019. Symmetrical quasi-absorptive RF bandpass filters. IEEE Trans Microw Theory Techn, 67(4):1472-1482. https://doi.org/10.1109/TMTT.2019.2895531https://doi.org/10.1109/TMTT.2019.2895531

Guilabert A, Morgan MA, Boyd TA, 2019. Reflectionless filters for generalized elliptic transmission functions. IEEE Trans Circ Syst I Reg Papers, 66(12):4606-4618. https://doi.org/10.1109/TCSI.2019.2931469https://doi.org/10.1109/TCSI.2019.2931469

Han Y, Chang YM, Che WQ, 2022. Frequency-selective rasorbers: a view of frequency-selective rasorbers and their application in reducing the radar cross sections of antennas. IEEE Microw Mag, 23(2):86-98. https://doi.org/10.1109/MMM.2021.3125463https://doi.org/10.1109/MMM.2021.3125463

Kou N, Yu SX, Ding Z, et al., 2022. Monopulse transmitarray antenna fed by aperture-coupled microstrip structure. Front Inform Technol Electron Eng, 23(3):502-510. https://doi.org/10.1631/FITEE.2000547https://doi.org/10.1631/FITEE.2000547

Lee B, Lee JH, Lee G, et al., 2022. All-port-reflectionless narrowband filtering power divider topology with generic equations. IEEE Trans Circ Syst I Reg Papers, 69(4):1417-1426. https://doi.org/10.1109/TCSI.2021.3133585https://doi.org/10.1109/TCSI.2021.3133585

Lee J, Lee JH, Barker NS, 2021. Rigorous design of input-reflectionless filter with Chebyshev response and exact approach to increase reflectionless range. IEEE Trans Microw Theory Techn, 69(10):4460-4475. https://doi.org/10.1109/TMTT.2021.3098530https://doi.org/10.1109/TMTT.2021.3098530

Li HY, Xu JX, Zhang XY, 2019. Substrate integrated waveguide filtering rat-race coupler based on orthogonal degenerate modes. IEEE Trans Microw Theory Techn, 67(1):‍140-150. https://doi.org/10.1109/TMTT.2018.2874252https://doi.org/10.1109/TMTT.2018.2874252

Li YC, Wu DS, Xue Q, et al., 2020. Miniaturized single-ended and balanced dual-band diplexers using dielectric resonators. IEEE Trans Microw Theory Techn, 68(10):4257-4266. https://doi.org/10.1109/TMTT.2020.3008784https://doi.org/10.1109/TMTT.2020.3008784

Lin TY, Wu TL, 2020. Balanced bandpass filter with common-mode reflectionless feature by terminated coupled lines. IEEE Trans Electromagn Compat, 62(4):1090-1097. https://doi.org/10.1109/TEMC.2020.2991715https://doi.org/10.1109/TEMC.2020.2991715

Lin TY, Huang YC, Wu TL, 2019. Novel absorptive balanced bandpass filters using resistive loaded transmission lines. IEEE Trans Compon Packag Manuf Technol, 9(4):745-753. https://doi.org/10.1109/TCPMT.2018.2861428https://doi.org/10.1109/TCPMT.2018.2861428

Morgan MA, Boyd TA, 2015. Reflectionless filter structures. IEEE Trans Microw Theory Techn, 63(4):1263-1271. https://doi.org/10.1109/TMTT.2015.2403841https://doi.org/10.1109/TMTT.2015.2403841

Morgan MA, Groves WM, Boyd TA, 2019. Reflectionless filter topologies supporting arbitrary low-pass ladder prototypes. IEEE Trans Circ Syst I Reg Papers, 66(2):594-604. https://doi.org/10.1109/TCSI.2018.2872424https://doi.org/10.1109/TCSI.2018.2872424

Pozar DM, 2012. Microwave Engineering (4th Ed.). New York, USA, p.188-190.

Shi J, Xu K, Zhang W, et al., 2016. An approach to 1-to-2n way microstrip balanced power divider. IEEE Trans Microw Theory Techn, 64(12):4222-4231. https://doi.org/10.1109/TMTT.2016.2611495https://doi.org/10.1109/TMTT.2016.2611495

Song KJ, Yao JC, Chen YX, et al., 2020. Balanced diplexer based on substrate integrated waveguide dual-mode resonator. IEEE Trans Microw Theory Techn, 68(12):5279-5287. https://doi.org/10.1109/TMTT.2020.3015968https://doi.org/10.1109/TMTT.2020.3015968

Wang XY, Tang SC, Chen JX, 2022. Differential-fed pattern-reconfigurable dielectric patch antenna and array with low cross-polarization. IEEE Trans Antenn Propag, 70(5):3870-3875. https://doi.org/10.1109/TAP.2021.3125363https://doi.org/10.1109/TAP.2021.3125363

Wu DS, Li YC, Xue Q, et al., 2022. Balanced dielectric resonator filters with multiple reconfigurable passbands. IEEE Trans Microw Theory Techn, 70(1):180-189. https://doi.org/10.1109/TMTT.2021.3081989https://doi.org/10.1109/TMTT.2021.3081989

Wu XH, Li YS, Liu XG, 2020. High-order dual-port quasi-absorptive microstrip coupled-line bandpass filters. IEEE Trans Microw Theory Techn, 68(4):1462-1475. https://doi.org/10.1109/TMTT.2019.2955692https://doi.org/10.1109/TMTT.2019.2955692

Xu KD, Bai YC, Ren X, et al., 2019. Broadband filtering power dividers using simple three-line coupled structures. IEEE Trans Compon Packag Manuf Technol, 9(6):1103-1110. https://doi.org/10.1109/TCPMT.2018.2869077https://doi.org/10.1109/TCPMT.2018.2869077

Xu KD, Lu S, Guo YJ, et al., 2022. Quasi-reflectionless filters using simple coupled line and T-shaped microstrip structures. IEEE J Radio Freq Identif, 6(1):54-63. https://doi.org/10.1109/JRFID.2021.3106664https://doi.org/10.1109/JRFID.2021.3106664

Yamamoto S, Azakami T, Itakura K, 1966. Coupled strip transmission line with three center conductors. IEEE Trans Microw Theory Techn, 14(10):446-461. https://doi.org/10.1109/TMTT.1966.1126304https://doi.org/10.1109/TMTT.1966.1126304

Yang L, Gómez-García R, Fan MY, 2020. Input-reflectionless balanced wideband bandpass filter using multilayered vertical transitions. IEEE Asia-Pacific Microwave Conf, p.443-449. https://doi.org/10.1109/APMC47863.2020.9331419https://doi.org/10.1109/APMC47863.2020.9331419

Yu W, Xu L, Zhang XY, et al., 2022. Dual-band dual-mode dielectric resonator filtering power divider with flexible output phase difference and power split ratio. IEEE Trans Microw Theory Techn, 70(1):190-199. https://doi.org/10.1109/TMTT.2021.3113654https://doi.org/10.1109/TMTT.2021.3113654

Zhang WW, Wu YL, Liu YA, et al., 2017. Planar wideband differential-mode bandpass filter with common-mode noise absorption. IEEE Microw Wirel Compon Lett, 27(5):458-460. https://doi.org/10.1109/LMWC.2017.2690839https://doi.org/10.1109/LMWC.2017.2690839

Zhang YF, Wu YL, Wang WM, et al., 2022. High-performance common- and differential-mode reflectionless balanced band-pass filter using coupled ring resonator. IEEE Trans Circ Syst II Exp Briefs, 69(3):974-978. https://doi.org/10.1109/TCSII.2021.3103535https://doi.org/10.1109/TCSII.2021.3103535

Zhang ZQ, Zhang B, Li DT, et al., 2021. A mechanical reliability study of 3-dB waveguide hybrid couplers in submillimeter and terahertz bands. Front Inform Technol Electron Eng, 22(8):1104-1113. https://doi.org/10.1631/FITEE.2000229https://doi.org/10.1631/FITEE.2000229

Zhou WJ, Chen JX, 2017. High-selectivity tunable balanced bandpass filter with constant absolute bandwidth. IEEE Trans Circ Syst II Exp Briefs, 64(8):917-921. https://doi.org/10.1109/TCSII.2016.2621120https://doi.org/10.1109/TCSII.2016.2621120

Zhu Y, Song KJ, Fan MY, et al., 2020. Wideband balanced bandpass filter with common-mode noise absorption using double-sided parallel-strip line. IEEE Microw Wirel Compon Lett, 30(4):359-362. https://doi.org/10.1109/LMWC.2020.2974089https://doi.org/10.1109/LMWC.2020.2974089

Zhu YH, Cai J, Chen JX, 2022. Quasi-reflectionless double-sided parallel-strip line bandpass filter with enhanced selectivity. IEEE Trans Circ Syst II Exp Briefs, 69(2):‍339-343. https://doi.org/10.1109/TCSII.2021.3099508https://doi.org/10.1109/TCSII.2021.3099508

Views

Downloads

CSCD

Alert me when the article has been cited

Submit

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

Address：Zhejiang University Press, 148 Tianmushan Road, Hangzhou, China Postal code：310028
Tel：+86-571-88273162 Email：fitee@zju.edu.cn
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰