A compact sixteenth‐mode substrate integrated waveguide bandpass filter with improved out‐of‐band performance

Azad, Amit Ranjan; Mohan, Akhilesh

doi:10.1002/mop.30615

Cited by 21 publications

(9 citation statements)

References 9 publications

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“…The authors of [82] reported a compact and dual-pole bandpass filter using SMSIW cavity resonators. Each SMSIW cavity resonator excites the fundamental TM 01 mode.…”

Section: H Sixteenth-mode Siw (Smsiw)mentioning

confidence: 99%

Miniaturization Trends in Substrate Integrated Waveguide (SIW) Filters: A Review

et al. 2020

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This review provides an overview of the technological advancements and miniaturization trends in Substrate Integrated Waveguide (SIW) filters. SIW is an emerging planar waveguide structure for the transmission of electromagnetic (EM) waves. SIW structure consists of two parallel copper plates which are connected by a series of vias or continuous perfect electric conductor (PEC) channels. SIW is a suitable choice for designing and developing the microwave and millimetre-wave (mm-Wave) radio frequency (RF) components: because it has compact dimensions, low insertion loss, high-quality factor (QF), and can easily integrate with planar RF components. SIW technology enjoys the advantages of the classical bulky waveguides in a planar structure; thus is a promising choice for microwave and mm-Wave RF components. INDEX TERMSCoupling topology, filters, isolation, metallic via, substrate integrated waveguide (SIW), transmission zero (TZ).

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“…The authors of [82] reported a compact and dual-pole bandpass filter using SMSIW cavity resonators. Each SMSIW cavity resonator excites the fundamental TM 01 mode.…”

Section: H Sixteenth-mode Siw (Smsiw)mentioning

confidence: 99%

Miniaturization Trends in Substrate Integrated Waveguide (SIW) Filters: A Review

et al. 2020

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“…Several attempts have been made to reduce the size of SIWs while maintaining or even enhancing the performance. Various RF applications have been realized, such as half-mode SIWs (HMSIWs) [ 10 , 11 ], quarter-mode SIWs (QMSIWs) [ 12 , 13 ], eight-mode SIWs (EMSIWs) [ 14 , 15 ], sixteen-mode SIWs [ 16 ], and ridged quarter-mode SIWs [ 17 ]. According to image theory, in-phase fields exist on opposite sides; thus, the symmetric plane of an SIW is cut into two halves to obtain an HMSIW [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

TM02 Quarter-Mode Substrate-Integrated Waveguide Resonator for Dual Detection of Chemicals

Salim

Lim

2018

Sensors

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The detection of multiple fluids using a single chip has been attracting attention recently. A TM02 quarter-mode substrate-integrated waveguide resonator designed at 5.81 GHz on RT/duroid 6010LM with a return loss of 13 dB and an unloaded quality factor of Q ≈ 13 generates two distinct strong electric fields that can be manipulated to simultaneously detect two chemicals. Two asymmetric channels engraved in a polydimethylsiloxane sheet are loaded with analyte to produce a unique resonance frequency in each case, regardless of the dielectric constants of the liquids. Keeping in view the nature of lossy liquids such as ethanol, the initial structure and channels are optimized to ensure a reasonable return loss even in the case of loading lossy liquids. After loading the empty channels, Q is evaluated as 43. Ethanol (E) and deionized water (DI) are simultaneously loaded to demonstrate the detection of all possible combinations: [Air, Air], [E, DI], [DI, E], [E, E], and [DI, DI]. The proposed structure is miniaturized while exhibiting a performance comparable to that of existing multichannel microwave chemical sensors.

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“…In addition, these structures do not exhibit wide‐stopband performance. Recently, a compact sixteenth‐mode SIW (SMSIW) cavity is proposed, and the size of the cavity is reduced by 93.75% compared with the standard SIW circular cavity . The proposed SMSIW cavities are used to design bandpass filters, and they exhibit simple geometrical configuration, compact size, low loss, and ease of fabrication.…”

Section: Introductionmentioning

confidence: 99%

Sixteenth‐mode substrate integrated waveguide cavity filters

Azad

Mohan

2018

Int J RF Microw Comput Aided Eng

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This paper presents bandpass filters using sixteenth‐mode substrate integrated waveguide (SMSIW) cavities operating at fundamental mode TM010. The first filter is a single‐layer fourth‐order bandpass filter which exhibits compact size, good selectivity and wide‐stopband up to 2.25f0. The stopband rejection is restricted due to the presence of the passband generated by the higher‐order mode TM020. To further reduce the size and improve the stopband characteristic of the filter, a multilayer configuration is proposed. The second filter is a multilayer second‐order bandpass filter in which the two cavities are coupled through a circular arc‐shaped slot etched on the ground plane of the cavities. The position and the dimensions of the slot are adjusted to obtain the desired couplings of TM010 and TM020 modes. The passband is created by TM010 mode, and its bandwidth can be controlled by realizing the desired TM010 coupling. Moreover, the passband constituted by TM020 mode is suppressed by minimizing the coupling of TM020 mode, and a stopband up to 3.14f0 is obtained which is wider than that of the first filter. The proposed filters have the advantages of compact size, low loss, and wide‐stopband performance. The filters are designed, fabricated and measured. The simulation and measurement results show an acceptable agreement.

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A compact sixteenth‐mode substrate integrated waveguide bandpass filter with improved out‐of‐band performance

Cited by 21 publications

References 9 publications

Miniaturization Trends in Substrate Integrated Waveguide (SIW) Filters: A Review

Miniaturization Trends in Substrate Integrated Waveguide (SIW) Filters: A Review

TM02 Quarter-Mode Substrate-Integrated Waveguide Resonator for Dual Detection of Chemicals

Sixteenth‐mode substrate integrated waveguide cavity filters

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