Filtering Power Divider With Ultrawide Stopband and Wideband Low Radiation Loss Using Substrate Integrated Defected Ground Structure

Han, Changxuan; Tang, Deshan; Deng, Zhixian; Qian, Huizhen Jenny; Luo, Xun

doi:10.1109/lmwc.2020.3036419

Cited by 25 publications

(17 citation statements)

References 26 publications

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“…Such radiation could cause an extra insertion loss and EM interference to adjacent devices. SIDGS is proposed to confine most of the divergent EM-field, which effectively reduces the radiation loss compared to the conventional DGS [15]- [16]. In this balun design, the microstrip is integrated with the SIDGS by the surrounding ground and metal-vias.…”

Section: B Filtering Balun Designmentioning

confidence: 99%

“…However, these baluns could easily generate high radiation at stopband. Recently, substrate-integrated defected ground structure (SIDGS) [15]- [16] is developed with wide stopband and wideband low radiation loss. Nevertheless, the design of filtering balun with the good in-band performance, wide stopband, and wideband low radiation loss and compact size for flexible integration remains a great challenge.…”

Section: Introductionmentioning

confidence: 99%

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Compact Filtering Balun With Wide Stopband and Low Radiation Loss Using Hybrid Microstrip and Substrate-Integrated Defected Ground Structure

Tang

Luo

2021

IEEE Microw. Wireless Compon. Lett.

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In this letter, a novel hybrid microstrip and substrate-integrated defected ground structure (SIDGS) is proposed for filtering balun design. Coupled microstrip and SIDGS resonators can not only achieve 180 • phase imbalance with filtering response, but also realize wide stopband and wideband low radiation loss. Besides, the feature of stacked substrate packaging could reduce the size of the circuit and be flexible for integration. To verify this mechanism, a filtering balun operating at 3.08 GHz with 3-dB FBW of 45% is proposed based on hybrid microstrip and SIDGS, which exhibits the in-band amplitudeand phase-imbalances of ±0.5 dB and ±0.4 • , respectively. The stopband extends to 18 GHz with the rejection level of 20 dB, whereas the measured total loss (i.e., including radiation, metal, and substrate loss) is less than 15% up to 15.3 GHz.

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Section: B Filtering Balun Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compact Filtering Balun With Wide Stopband and Low Radiation Loss Using Hybrid Microstrip and Substrate-Integrated Defected Ground Structure

Tang

Luo

2021

IEEE Microw. Wireless Compon. Lett.

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“…Besides, the proposed BPF can not only introduce tight-coupling to achieve wideband operation but also effectively suppress the parasitics through disparate harmonic positions. Compared to the authors' previous works [19], [20], the SIDGS resonator is introduced for the compact wideband BPF design [i.e., fractional bandwidth (FBW) > 50%]. To verify the mechanism, a wideband BPF is implemented and fabricated.…”

Section: Introductionmentioning

confidence: 99%

Compact Wideband BPF With Wide Stopband Using Substrate Integrated Defected Ground Structure

Zhou

Rao

Yang

et al. 2021

IEEE Microw. Wireless Compon. Lett.

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In this letter, a compact wideband bandpass filter (BPF) with a wide stopband is proposed based on the substrate integrated defected ground structure (SIDGS) and folded stepped-impedance resonator (FSIR). Such a SIDGS resonator can not only allocate a specific resonance with compact size but also introduce the different harmonic positions compared with a traditional microstrip line resonator. Meanwhile, due to the discrepant harmonic positions of proposed SIDGS and FSIR, a wide stopband response can be achieved using a compact stacked-coupled scheme. To verify the mechanism, a miniaturized wideband BPF operating at 1.69 GHz (i.e., f 0) is implemented and fabricated. A measured wide stopband up to 11.8 f 0 with a 20-dB rejection level is achieved.

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“…This approach has been demonstrated effective but needs additional steps in both the design and the fabrication processes, thereby making it difficult to implement. In a number of works, e.g., [7][8][9][10][11][12], defected ground structures have been used to realize harmonics canceling. The defected ground methods prove suitable for the purpose yet-similarly as EBG-additional design and fabrication steps are required, which is a downside.…”

Section: Introductionmentioning

confidence: 99%

Design of a Patch Power Divider With Simple Structure and Ultra-Broadband Harmonics Suppression

et al. 2021

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This paper introduces a simple H-shaped patch Wilkinson power divider (WPD), which provides ultra wide harmonics suppression band. The presented WPD designed at 1.8 GHz, and exhibits good performance at the operating bandwidth. In the proposed divider structure, two simple patch low-pass filters (LPFs) are employed at each branch, and three open ended stubs are added at each port. The proposed divider, implemented using the aforementioned structures has a good performance at both higher frequencies, and the operating frequency. In particular, the designed divider provides an ultra wide suppression band from 3 GHz to 20 GHz, which encompasses the 2 nd up to the 11 th harmonic. The proposed WPD has an operating band from 1.62 GHz to 2.1 GHz, with the operating bandwidth exceeding 480 MHz. Consequently, the fractional bandwidth (FBW) of 25.8 percent is obtained. The results indicate |S11|, |S12|, |S22|, and |S23|, are equal to -17 dB, -3.5 dB, -20 dB, and -17 dB, respectively, at the operating frequency. The simulation results are corroborated through the measurements of the fabricated divider prototype. The superior harmonic suppression capability is also demonstrated through comparisons with state-of-the-art divider circuits from the literature. INDEX TERMSResonator, harmonics suppression, patch power divider, patch resonator.

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Filtering Power Divider With Ultrawide Stopband and Wideband Low Radiation Loss Using Substrate Integrated Defected Ground Structure

Cited by 25 publications

References 26 publications

Compact Filtering Balun With Wide Stopband and Low Radiation Loss Using Hybrid Microstrip and Substrate-Integrated Defected Ground Structure

Compact Filtering Balun With Wide Stopband and Low Radiation Loss Using Hybrid Microstrip and Substrate-Integrated Defected Ground Structure

Compact Wideband BPF With Wide Stopband Using Substrate Integrated Defected Ground Structure

Design of a Patch Power Divider With Simple Structure and Ultra-Broadband Harmonics Suppression

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