Hairpin Resonators in Varactor-Tuned Microstrip Bandpass Filters

Захаров, А. В.; Rozenko, Sergii; Litvintsev, Sergii; Ilchenko, M. E.

doi:10.1109/tcsii.2019.2953247

Cited by 23 publications

(7 citation statements)

References 9 publications

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“…As a widely used basic structure, the filter is integrated into the power divider to realize the multifunctional characteristic of the device. In Khani and colleagues, [1][2][3][4] the dual-band bandpass filters were designed with the advantages of compact size, low insertion loss, and high attenuation level in stop-band. However, the selectivity of the filters can be further improved.…”

Section: Introductionmentioning

confidence: 99%

Design of dual‐band FPD with high selectivity based on QMRLR

Zhang,

Chen,

Liu

et al. 2024

Micro & Optical Tech Letters

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In this brief, a filtering power divider (FPD) with independently controllable four transmission zeros (TZs) and low insertion loss is designed and analyzed by using quad‐mode ring‐loaded resonator (QMRLR). The equivalent circuit of the proposed FPD is given, and the resonant characteristics of the resonator are analyzed. Due to the horizontal transmission interference of QMRLR, two TZs are realized. In addition, two TZs and one transmission pole are achieved by stepped impedance lines, achieving high selectivity within the passbands. The insertion loss is less than 0.5 dB, which is better than other FPDs. For demonstration, a prototype with center frequencies at 1.45 and 2.75 GHz is fabricated and measured. The measured and simulated results are presented with good agreement.

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Section: Introductionmentioning

confidence: 99%

Design of dual‐band FPD with high selectivity based on QMRLR

Zhang,

Chen,

Liu

et al. 2024

Micro & Optical Tech Letters

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“…Band-pass filters with electronically controlled transfer functions were developed using dielectric resonators with semiconductors or ferroelectric constituents [5,6], printed circuit boards with varactors, pin-diodes or MEMS [7][8][9], cavity filters with adjustable gaps [10,11] etc. Among other technologies, filters based on spin-wave excitations have shown a potential for realizing components that are compact, planar, and tunable [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Y-type Hexagonal Ferrite-based Band-Pass Filter with Dual Magnetic and Electric Field Tunability

Popov

Xiong

Zavislyak

et al. 2022

Preprint

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This work is on the design, fabrication and characterization of a hexagonal ferrite band-pass filter that can be tuned either with a magnetic field or an electric field. The filter operation is based on a straight-edge Y-type hexagonal ferrite resonator symmetrically coupled to the input and output microstrip transmission lines. The Zn2Y filter demonstrated magnetic field tunability in the 8-12 GHz frequency range by applying an in-plane bias magnetic field H0 provided by a built-in permanent magnet. The insertion loss and 3 dB bandwidth within this band were 8.6±0.4 dB and 350±40 MHz, respectively. The electric field E tunability of the pass-band of the device was facilitated by the nonlinear magnetoelectric effect (NLME) in the ferrite. The E-tuning of the center frequency of the filter by (1150±90) MHz was obtained for an input DC electric power of 200 mW. With efforts directed at a significant reduction in the insertion loss, the compact and power efficient magnetic and electric filed tunable Zn2Y band-pass filter has the potential for use in novel reconfigurable RF/microwave devices and communication systems.

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“…Microstrip bandpass filters with compact size and lightweight need to be redesigned for high-performance functional in the channels of communication systems [4]. Microstrip hairpin filter with simple structure, and high integration [5,6,7,8] has widely been utilized in microstrip bandpass filter at below 100 GHz. However, after entering the THz frequency band, the transmission loss of the microstrip line increases sharply, which no longer meets the performance requirements of the filter.…”

Section: Introductionmentioning

confidence: 99%

TSV-based hairpin bandpass filter for 6G mobile communication applications

Wang

Yin

et al. 2021

IEICE Electron. Express

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Aimed at sixth-generation (6G) mobile communication applications, three fifth-order novel ultra-compact hairpin bandpass filter is proposed. Through-Silicon Via (TSV), a three-dimensional integration technology, is used to implement the arms of hairpin units, and some hairpin units consist of four arms. In this letter, the design method of the three proposed filters is introduced, and the filtering characteristics are verified by HFSS, an industry-grade simulator based on finite element method. The results reveal that the three proposed filter has the center frequency of 0.405 THz, 0.3915 THz, and 0.3955 THz with bandwidth of 0.1 THz, 0.077 THz, and 0.063 THz and exhibits an insertion loss of 2.0 dB and return loss over 12.4 dB, 13.4 dB, and 14 dB. The size of the three proposed filters is both 0.284 × 0.0325 mm 2 (1.29 × 0.148λ g 2 ).

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Hairpin Resonators in Varactor-Tuned Microstrip Bandpass Filters

Cited by 23 publications

References 9 publications

Design of dual‐band FPD with high selectivity based on QMRLR

Design of dual‐band FPD with high selectivity based on QMRLR

Y-type Hexagonal Ferrite-based Band-Pass Filter with Dual Magnetic and Electric Field Tunability

TSV-based hairpin bandpass filter for 6G mobile communication applications

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