Size‐reduced dual‐band HMSIW cavity filters loaded with double‐sided SICSRRs

Huang, Yong Mao; Peng, Yujia; Zhou, Yuliang; Jin, Haiyan; Leng, Supeng; Wang, Guoan

doi:10.1049/el.2016.4532

Cited by 18 publications

(10 citation statements)

References 8 publications

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“…However, these structures are still suffered from large sizes. In order to minimize these structures, several techniques have been proposed in which the most important of them is the evanescent‐mode technique . According to the theory of the evanescent‐mode propagation, by the combination of the electric dipoles and the SIW technology, a forward‐wave propagation below the cutoff frequency of the waveguide has been achieved …”

Section: Introductionmentioning

confidence: 99%

A novel super compact half‐mode substrate‐integrated waveguide filter using modified complementary split‐ring resonator

Danaeian

Moznebi

Afrooz

2019

Int J RF Microw Comput Aided Eng

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A novel super compact filter based on half-mode substrate-integrated waveguide (HMSIW) technology loaded by the modified complementary split-ring resonator (MCSRR) is proposed. The working principle of the proposed filter is based on the evanescent-mode propagation technique. According to this technique, by loading the complementary split-ring resonator (CSRR) on the metal surface of the substrateintegrated waveguide (SIW) structure, an additional passband below the SIW cutoff frequency can be obtained. In order to miniaturize the physical size of the conventional CSRR, a new method is introduced. In the proposed MCSRR unit-cell, the meander slots are carved inside all of the interior space of the ring. Accordingly, the length of the slot is increased which leads to an increase in the inductor and capacitor of the proposed structure without occupying the extra space. Therefore, the electrical size of the proposed MCSRR unit-cell is reduced. Consequently, the resonance frequency of the proposed MCSRR unit-cell is decreased compared to the conventional CSRR with the same sizes. Namely, the lower resonance frequencies can be achieved by using this technique without increasing the size of the unit-cell. In order to confirm the miniaturization technique, two HMSIW filters loaded by the proposed MCSRR unit-cell are designed, fabricated, and experimental verifications are provided. The results show that a miniaturization about 67% is achieved. K E Y W O R D Sband-pass filter, half-mode substrate-integrated waveguide, miniaturization, modified complementary split-ring resonators

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Section: Introductionmentioning

confidence: 99%

A novel super compact half‐mode substrate‐integrated waveguide filter using modified complementary split‐ring resonator

Danaeian

Moznebi

Afrooz

2019

Int J RF Microw Comput Aided Eng

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“…Huang et al developed a horizontal asymmetric SICSRR and loaded it into HMSIW to form a resonant unit, which can have lower frequencies than traditional HMSIW-CSRR resonators when occupying the same physical circuit size [5]. Xu et al and Huang et al combined defected ground structure (DGS) technology with half-mode substrate integrated waveguide (HMSIW) to design a miniaturized dual-pass filter by loading CSRRs with double-sided loading technology [6,7]. Danaeian et al used a stepped-impedance resonator (SIR) to reduce the physical size of traditional CSRR, designing a compact metamaterial element SIR-CSRR and loaded it into HMSIW [8].…”

Section: Introductionmentioning

confidence: 99%

Miniaturized Hmsiw Bandpass Filter Based on the Coupling of Dual-Iris With Nested Stepped-Impedance CSRRS

Yin¹,

Lin²,

Hao³

et al. 2019

PIER Letters

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A novel miniaturized bandpass half-mode substrate integrated waveguide (HMSIW) filter which uses dual-iris coupling method to load complementary split-ring resonators (CSRRs) into HMSIW is proposed in this paper. By modifying traditional CSRRs through nesting method combined with step impedance structure, a nested stepped-impedance complementary split-ring resonator (NSICSRR) structure with higher equivalent capacitance and inductance of CSRR is obtained. Based on the traditional single-iris coupling method, a dual-iris coupling method is developed. And NSICSRR is loaded into HMSIW by using the dual-iris coupling method, which can reduce the resonant frequency of the structure. In order to verify the effectiveness of the technology above in realizing the miniaturization of HMSIW filter, a second-order HMSIW filter is designed and measured. It can be found in the measured results that the filter has the center frequency of 6.35 GHz, the 3 dB bandwidth of 690 MHz, the return loss of better than 14 dB within the passband, and the size of 0.0396λ 2 g. The experimental results are basically consistent with the simulation ones.

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“…Over the past years, a number of wideband filters have been developed . However, most of them cannot take into account both the sideband selectivity and stopband rejection at the same time …”

Section: Introductionmentioning

confidence: 99%

Miniaturized wideband bandpass filter with enhanced selectivity and stopband suppression

Huang

Shao

Chen

2018

Micro & Optical Tech Letters

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In this article, a wideband microstrip bandpass filter with cross‐coupling is presented. The filter adopts a short‐stub‐loaded dual‐mode resonator (SSL‐DMR) and two stepped‐impedance spurline resonators (SISLRs) to achieve size miniaturization. Meanwhile, the trisection topology is utilized to achieve two transmission zeros (TZs) on both sides of the passband, with which good sideband selectivity can be exhibited. Furthermore, the SISLRs at the input and output ports can also contribute to another TZ at higher frequency of the upper stopband, which cannot be acquired by utilizing the conventional uniform‐impedance resonator (UIR) or stepped‐impedance resonator (SIR). To verify the aforementioned concept, a filter with a miniaturized size of 0.16 λg × 0.75 λg is designed, fabricated, and measured (λg denotes to the guided wavelength at central frequency). Measured results of the fabricated prototype are in good agreement with the simulated ones. Meanwhile, the fabricated filter achieves a fractional bandwidth about 44.5%, a minimum in‐band insertion loss of 0.6 dB, and a stopband rejection over 20 dB up to the fourth harmonic of the operation center frequency.

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Size‐reduced dual‐band HMSIW cavity filters loaded with double‐sided SICSRRs

Cited by 18 publications

References 8 publications

A novel super compact half‐mode substrate‐integrated waveguide filter using modified complementary split‐ring resonator

A novel super compact half‐mode substrate‐integrated waveguide filter using modified complementary split‐ring resonator

Miniaturized Hmsiw Bandpass Filter Based on the Coupling of Dual-Iris With Nested Stepped-Impedance CSRRS

Miniaturized wideband bandpass filter with enhanced selectivity and stopband suppression

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