Substrate integrated waveguide quasi‐elliptic bandpass filter with parallel coupled microstrip resonator

Kiani, Sina; Rezaei, Pejman; Karami, Mahmood; Sadeghzadeh, R. A.

doi:10.1049/el.2018.0170

Cited by 25 publications

(17 citation statements)

References 16 publications

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“…To create a planar sensing region, a hexagon slot is etched on the top surface of the SIW cavity and a modified SRR is directly connected to the edge of the slot. Traditionally, in SIW cavity, the resonance characteristics strongly depend on the electric field and magnetic field distributions [13]. Furthermore, to concentrate the electric field on the presented sensing spot, the curved slots are inserted into the top plane of SIW cavity, which exhibits strong field confinement that the results in the deeper resonance can be achievable.…”

Section: Sensor Designmentioning

confidence: 99%

An Overview of Interdigitated Microwave Resonance Sensors for Liquid Samples Permittivity Detection

Kiani

Rezaei

Fakhr

2021

Smart Sensors, Measurement and Instrumentation

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Microwave sensors based on electrically small planar resonant elements are investigated in this season. Due to the high sensitivity of these resonators to the properties of their environment, especially the dielectric constant and the loss coefficient, these sensors are of particular importance for the dielectric characterization of solids and liquids and for measuring the composition of materials. This chapter also deals the main advantages and limitations of planar microwave resonant sensors, and several prototypes are reported, mainly including sensors for measuring the dielectric properties of solids, and sensors based on microfluidics (useful for liquid characterization and liquid composition). The proposed sensors have great potential for use in real scenarios (including industrial processes and characterization of bio-samples).

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Section: Sensor Designmentioning

confidence: 99%

An Overview of Interdigitated Microwave Resonance Sensors for Liquid Samples Permittivity Detection

Kiani

Rezaei

Fakhr

2021

Smart Sensors, Measurement and Instrumentation

Self Cite

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“…Or they can sense two materials such as both solid and fluid (Silva et al., 2021; Velez et al., 2021), also the sensors sense several variables however they are called multivariable sensors (Baghelani et al., 2020) or have several frequency bands that are called multiband sensors (Bakır et al., 2018; Dalgac et al., 2021). There are techniques to design including interdigital and mender structure (Kiani, Rezaei, Karami, & Sadeghzadeh, 2018; Kiani, Rezaei, Navaei, & Abrishamian, 2018; Krishnan & Saraswathyamma, 2021), substrate integrated waveguide (Kiani, Rezaei, Karami, & Sadeghzadeh, 2018; Kiani, Rezaei, Navaei, & Abrishamian, 2018), parallel coupling (Kiani, Rezaei, Karami, & Sadeghzadeh, 2018; Kiani, Rezaei, Navaei, & Abrishamian, 2018), planar open‐loop resonator (Aquino et al., 2021), phase‐variation microwave sensor (Su et al., 2021), split ring resonator (SRR) (Kiani et al., 2020), complementary SRR (Jiang et al., 2021; Soltan et al., 2020; Stuchly et al., 1974; Viswanathan et al., 2020), time domain measurement (Erdogan et al., 2020) and discontinuous parallel‐plate waveguide (Valagiannopoulos., 2011), such structure indicates highly selective treatment, in this paper have been used from semi‐analytical method of mode matching. A variety of methods have been created to improve sensitivity and Q‐factor (Kiani, Rezaei, Karami, & Sadeghzadeh, 2018; Kiani, Rezaei, Navaei, & Abrishamian, 2018).…”

Section: Introductionmentioning

confidence: 99%

Microwave Split Ring Resonator Sensor for Determination of the Fluids Permittivity With Measurement of Human Milk Samples

2022

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In this paper, the human milk dielectric constant by a microwave sensor has been evaluated. The proposed sensor is result of coupling between a simple microstrip line and a split ring resonator and its resonance frequency is 6 GHz. When up to 30 μl of milk are placed on the sensing area on the sensor, it causes the resonance frequency to shift. Six samples of human milk were measured by a network analyzer, then the dielectric constant of the samples were determined, and three similar samples were measured by the built‐in sensor. The proposed microwave sensor has Q‐factor of 38 and its sensitivity is 0.17%. The implemented sensor has acceptable performance compared to previous sensors and it can be used to determine the normal behavior of human milk with a simple method and for this work, it requires to small value of sample for measurement.

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“…EBGs along with folded SIW (FSIW) [8] and half-mode T septum SIW (HMTSSIW) [9] are used to achieve a significant size-reduction and larger bandwidth but sacrificing the requisite of low IL. Quasi-elliptic filters are designed using SIW by utilizing slot-coupling [10] and cross coupling [11] with benefits of low IL.…”

Section: Introductionmentioning

confidence: 99%

Compact Wideband SIW Based Bandpass Filter for X, Ku and K Band Applications

Tharani¹,

Selvajyothi²,

Karthikeyan³

et al. 2021

RADIOENGINEERING

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This paper presents a miniaturized bandpass filter (BPF) with characteristics of wider passband and stopband rejection using substrate integrated waveguide (SIW) technology. Slot loading mechanisms deployed on the upper layer of SIW and defective ground structure (DGS) on the ground plane are utilized to achieve wider passband and stopband respectively. The slots on the top layer along with DGS significantly enhances the selectivity of the filter by generating three transmission zeros (TZs) on the upper side of the passband. The proposed filter is simulated using fullwave simulators and the performance is validated through fabrication and testing of the prototype. The proposed SIW filter exhibits a low insertion loss of 1.52 dB over a wider passband from 9.17 GHz to 20.31 GHz with a 3 dB fractional bandwidth (FBW) of 76%. Further, a wider upper stopband is achieved with the rejection of more than 16 dB in the frequency range of 23 GHz to 40 GHz. The filter provides a flat group delay response of approximately 0.19 ns over the wider passband. The electrical size of the fabricated prototype is 1.05 g × 0.67 g , where g denotes the guided wavelength in the dielectric substrate for the designed center frequency of 16 GHz.

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Substrate integrated waveguide quasi‐elliptic bandpass filter with parallel coupled microstrip resonator

Cited by 25 publications

References 16 publications

An Overview of Interdigitated Microwave Resonance Sensors for Liquid Samples Permittivity Detection

An Overview of Interdigitated Microwave Resonance Sensors for Liquid Samples Permittivity Detection

Microwave Split Ring Resonator Sensor for Determination of the Fluids Permittivity With Measurement of Human Milk Samples

Compact Wideband SIW Based Bandpass Filter for X, Ku and K Band Applications

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