Miniaturization of substrate integrated waveguide filters using novel compact metamaterial unit-cells based on SIR technique

Danaeian, Mostafa; Afrooz, Kambiz; Hakimi, Ahmad

doi:10.1016/j.aeue.2017.11.008

Cited by 40 publications

(27 citation statements)

References 29 publications

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“…As illustrated in Figure , the positive permittivity is occurred in the vicinity of f r = 2.4 GHz which is the resonance frequency of the proposed MCSRR unit‐cell. This verifies that by etching the proposed MCSRR unit‐cell on the metal surface of the HMSIW structure, initial ε ‐negative material below the waveguide cutoff becomes ε ‐positive and forward propagation is achieved . This means that the proposed MCSRR unit‐cell is able to reverse the permittivity of the original material.…”

Section: Design Procedures Of the Proposed Hmsiw‐mcsrr Filtersupporting

confidence: 75%

“…Recently, substrate‐integrated waveguide (SIW) structure has attracted many interests in the microwave and millimeter wave‐integrated circuits design . The SIW structure keeps the main advantages of the conventional rectangular waveguides like low losses and high‐quality factor.…”

Section: Introductionmentioning

confidence: 99%

“…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%

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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: Design Procedures Of the Proposed Hmsiw‐mcsrr Filtersupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Self Cite

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“…Different filter designs using the electric dipoles (i.e., CSRRs) etched on the top wall of the SIWs are proposed in the order of the miniaturization [5,20,21]. Also, the fractal and stepped impedance resonator (SIR)-CSRRs are proposed to get further miniaturization [22,23]. When using the SIR-CSRR, each arm in the CSRRs is replaced by its equivalent slotted SIR arrangements.…”

Section: Introductionmentioning

confidence: 99%

H-Shaped Fractal Slots Based Highly Miniaturized Substrate Integrated Waveguide Metamaterial Bandpass Filters for C-Band Applications

Hamzah¹,

Audah²,

Alkhafaji³

2020

PIER B

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A new family of substrate integrated waveguide SIW-metamaterial bandpass filters is proposed which support backward and forward wave propagations with two adjacent passbands under the cutoff frequency of the conventional SIW structure. Through varying the fractal slots sizes etched over SIW structures, different frequency transmission responses were realized. Extraction of the metamaterial parameters was achieved via scattering parameters. The equivalent electrical length of a fractal slot is larger than the conventional slot, making it suitable to design highly miniaturized filters. The equivalent circuit model was analyzed in detail to provide comprehension on the SIW-metamaterial unit cells. Three filters using the 3rd iteration H-shaped SIW-metamaterial unit cells were designed and tested using subwavelength resonators. Filter design was used to extract the coupling coefficient and external quality factor to obtain the filters' optimized physical dimensions. The out-of-band rejection can be enhanced by reconfiguring the fractal slots or the SIW. A wide upper out-of-band rejection with attenuation > 30 dB with the range 5.5 GHz to 8 GHz was realized. The proposed filters offer advantages through low insertion loss, easy fabrication, high selectivity, small size, and low cost. The measured scattering parameters S 21 and S 11 were in good agreement with the simulated ones.

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“…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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Miniaturization of substrate integrated waveguide filters using novel compact metamaterial unit-cells based on SIR technique

Cited by 40 publications

References 29 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

H-Shaped Fractal Slots Based Highly Miniaturized Substrate Integrated Waveguide Metamaterial Bandpass Filters for C-Band Applications

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

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