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 21 publications

(7 citation statements)

References 9 publications

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“…Microwave devices such as resonators and band-stop and band-pass filters are important components in high frequency communication devices and radars [1][2][3]. Such devices, in general, are based on low-loss semiconductors, ferroelectrics, or ferrites [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Electric Field Tuning of a Nickel Zinc Ferrite Resonator by Non-Linear Magnetoelectric Effects

Popov,

Machi,

Inman

et al. 2023

Preprint

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The nature of nonlinear magnetoelectric (NLME) effect has been investigated at room-temperature in single-crystal Zn substituted nickel ferrite. Tuning of the frequency of magnetostatic surface wave (MSSW) modes under an applied pulsed DC electric field/current has been utilized to probe the effect. The frequencies of the MSSW modes at 8–20 GHz were found to down shift by 400 MHz for an applied DC power P of 100 mW and the frequency shift was the same for all of the MSSW modes and linearly proportional to P. A model is proposed for the effect and the NLME phenomenon was interpreted in terms of a reduction in the saturation magnetization due to the DC current. The estimated decrease of magnetization with applied electric power, estimated from data on mode frequency versus P, was − 2.50 G/mW. The frequency tuning efficiency of the MSSW modes due to NLME effects in the ferrite resonator was found to be 4.1 MHz/mW which is an order of magnitude higher than the shift reported for M-type strontium and barium hexaferrite resonators investigated earlier and has the potential for miniature, electric field tunable, planar microwave devices for the 8–20 GHz frequency range.

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Section: Introductionmentioning

confidence: 99%

Electric Field Tuning of a Nickel Zinc Ferrite Resonator by Non-Linear Magnetoelectric Effects

Popov,

Machi,

Inman

et al. 2023

Preprint

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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 21 publications

References 9 publications

Electric Field Tuning of a Nickel Zinc Ferrite Resonator by Non-Linear Magnetoelectric Effects

Electric Field Tuning of a Nickel Zinc Ferrite Resonator by Non-Linear Magnetoelectric Effects

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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