Compact Dual-Band Differential Bandpass Filter Using Quadruple-Mode Stepped-Impedance Square Ring Loaded Resonators

Ren, Baoping; Liu, Haiwen; Ma, Zhewang; Ohira, Masataka; Wen, Pin; Wang, Xiaolong; Guan, Xuehui

doi:10.1109/access.2018.2829025

Cited by 47 publications

(33 citation statements)

References 24 publications

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“…Unlike single-band differential microstrip BPFs, fewer numbers of balanced filter designs and techniques have been proposed recently with a dual-band performance [58][59][60][61][62][63][64][65][66][67][68][69][70]. Nevertheless, increasing demand for flexible resonant devices has led to more attention and interest in designing and implementing of dual-/tri-/quad-band BPFs.…”

Section: Dual-band Differential Microstrip Bpfsmentioning

confidence: 99%

“…Ren et al [66] presented a compact dual-band balanced microstrip BPF based on quadruple-mode stepped-impedance closed-loop resonators by the same research group. Two differentially excited modes of stepped-impedance close-loop resonators were employed to produce the dual differentially-def bands.…”

Section: Dual-band Differential Microstrip Bpfsmentioning

confidence: 99%

“…Although the responses of the balanced microstrip filters presented in the previous two sections are quite sufficient, they are only useful for single-band and dual-band applications. Therefore, to meet the increasing demands for multi-band wireless systems, several tri-band and quad-band balanced microstrip filters have been proposed in the past few years [65,66,[73][74][75][76][77][78][79]. In this section, we survey the main design techniques recently proposed for tri-band and quad-band balanced microstrip BPFs.…”

Section: Tri-and Quad-band Differential Microstrip Bpfsmentioning

confidence: 99%

“…The stopband bandwidth was enhanced to 13 GHz with a suppression level of more than 17 dB, which is five times the first-mode operation frequency. A differential-fed BPF has been designed based on two coupled six-mode stepped-impedance close ring loaded transmission lines, as shown in Figure 13 [66]. To obtain a compact size structure, the four open-loop and center transmission lines of the stepped-impedance ring resonators have been folded.…”

Section: Tri-and Quad-band Differential Microstrip Bpfsmentioning

confidence: 99%

“…In this section, we survey the main design techniques recently proposed for tri-band and quad-band balanced microstrip BPFs. The same dual-band microstrip balanced filter structures presented by Wei et al [64] and Ren et al [66] have also been modified and developed to resonate at three differential-mode passbands. A differential-fed BPF has been implemented based on five stub loaded resonators, as shown in Figure 12 [64].…”

Section: Tri-and Quad-band Differential Microstrip Bpfsmentioning

confidence: 99%

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A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges

Al‐Yasir

Parchin

Abdulkhaleq

et al. 2020

Sensors

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Differentially driven devices represent a highly promising research field for radio frequency (RF), microwave (MW), and millimeter-wave (mmWave) designers and engineers. Designs employing differential signals are essential elements in low-noise fourth-generation (4G) and fifth-generation (5G) communications. Apart from the conventional planar MW components, differential-fed balanced microstrip filters, as promising alternatives, have several advantages, including high common-mode rejection, low unwanted radiation levels, high noise immunity, and wideband harmonic suppression. In this paper, a comprehensive and in-depth review of the existing research on differential-fed microstrip filter designs are presented and discussed with a focus on recent advances in this research and the challenges facing the researchers. A comparison between different design techniques is presented and discussed in detail to provide the researchers with the advantages and disadvantages of each technique that could be of interest to a specific application. Challenges and future developments of balanced microstrip bandpass filters (BPFs) are also presented in this paper. Balanced filters surveyed include recent single-, dual-, tri-, and wide-band BPFs, which employ different design techniques and accomplish different performances for current and future wireless applications.3 of 25 between these designs follow each section. Section 6 shows the challenges and future development of differential-fed microstrip BPFs. Finally, Section 7 presents the conclusion of our review. Single-Band Differential Microstrip BPFsRecently, many single-band differential planar BPFs based on different techniques have been reported [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56]. The main difference between these designs is the structures utilized. Several types of resonators and techniques can be used to obtain a single-band differential planar BPF with different performance. Generally, the common-mode noise suppression is an interesting topic for high-speed and high-frequency wireless applications. The common-mode noise signals can degrade the differential-mode transmitted signals as well as the entire power of such wireless applications. To suppress the common-mode signals, some researchers and engineers have proposed the use of a series of combinations of single-band differential-fed planar filters and transmission lines [39]. However, this technique will lead to a large area and so not suitable for new demands of compact systems. However, Ebrahimi et al. have proposed a new balanced BPF using dumbbell-shaped defected ground structures (DGSs) [42]. The proposed DGS resonator provides the option of implementing higher-order differential filters. Also, in comparison with similar techniques such as S-shaped complementary split-ring resonators (CSRRs), which have similar structures in common-mode and differential mode transmission [39], differential filters based on DGSs provide high common-mode attenuation by utilizing two separate equiv...

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Section: Dual-band Differential Microstrip Bpfsmentioning

confidence: 99%

Section: Dual-band Differential Microstrip Bpfsmentioning

confidence: 99%

Section: Tri-and Quad-band Differential Microstrip Bpfsmentioning

confidence: 99%

Section: Tri-and Quad-band Differential Microstrip Bpfsmentioning

confidence: 99%

Section: Tri-and Quad-band Differential Microstrip Bpfsmentioning

confidence: 99%

See 3 more Smart Citations

A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges

Al‐Yasir

Parchin

Abdulkhaleq

et al. 2020

Sensors

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Dual‐wideband differential bandpass filter with intrinsic common‐mode suppression based on hybrid transmission structure

Liang

Wang

et al. 2020

Int J RF Microw Comput Aided Eng

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Based on the microstrip‐line/slot‐line hybrid transmission structure, a novel method of realizing dual‐wideband differential bandpass filter (DDBPF) is proposed and demonstrated in this paper. By virtue of hybrid transmission structure, the proposed DDBPF has intrinsic common mode (CM) rejection. Moreover, the dual‐wideband transmission performance of differential mode (DM) signal can be approached by using two dual‐mode stub‐loaded stepped‐impedance resonators. The two passbands of the proposed DDBPF are respectively centered at 2.76 GHz and 4.12 GHz which fractional bandwidths are 20.7% and 11.4%. The DM harmonic suppression can extend to 43.5 GHz with rejection level of 13 dB. The CM attenuation of DDBPF can reach 60 dB within DM passband. Furthermore, the CM suppression with attenuation level of 20 dB is ranging from 0.5 GHz to 43.5 GHz. The measurement results are in good agreement with the simulation results, which validates the effectiveness of proposed design methodology.

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A tunable balanced dual‐band BPF with quasi‐independently controlled center frequency and bandwidth

Chen

Wei

2020

Int J RF Microw Comput Aided Eng

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In this paper, a balanced dual-band bandpass filter (BPF) with high selectivity and low insertion loss performance is presented by employing stub loaded resonators (SLRs) and stepped impedance resonators (SIRs) into balanced microstrip-slotline (MS) transition structures. The balanced MS transition structures can achieve a wideband common-mode (CM) suppression which is independent of the differential-mode (DM) response, significantly simplifying the design procedure. Six varactors are loaded into the resonators to achieve the electrical reconfiguration. The proposed balanced dual-band BPF can realize quasi-independently tunable center frequencies and bandwidths. A tuning center frequency from 2.48 to 2.85 GHz and a fractional bandwidth (20.16%-7.02%) with more than 15 dB return loss and less than 2.36 dB insertion loss are achieved in the first passband. The second passband can realize a tuning center frequency from 3.6 to 3.95 GHz with more than 12 dB return loss and less than 2.38 dB insertion loss. A good agreement between the simulated and measured results is observed.

show abstract

Compact Dual-Band Differential Bandpass Filter Using Quadruple-Mode Stepped-Impedance Square Ring Loaded Resonators

Cited by 47 publications

References 24 publications

A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges

A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges

Dual‐wideband differential bandpass filter with intrinsic common‐mode suppression based on hybrid transmission structure

A tunable balanced dual‐band BPF with quasi‐independently controlled center frequency and bandwidth

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