Dual-mode bandpass filter using microstrip SIR at Ka band

Qiu-hong, Zhang; Dong, Yanlei; Cao, Ji-Gang

doi:10.1109/apmc.2009.5384502

Cited by 7 publications

(4 citation statements)

References 10 publications

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“…1. Periodic structures are a vital aspect of transmission line and waveguide systems, characterized by the presence of reactive elements at regular intervals along the structure [6,28]. These elements can manifest in various forms, depending on the specific type of transmission line employed.…”

Section: Unit Cell Designmentioning

confidence: 99%

Highly-selective Ridge Gap Waveguide Based Filters for Multi-band Satellite Applications

Chhasatia¹,

Chaudhari²,

Patel³

2023

PIER M

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In this paper, a pioneering and innovative approach for multiple-band ridge gap waveguide (MB-RGW) based narrowband bandpass filter for satellite applications is presented. The MB-RGW represents a significant and emerging technological advancement within the domain of microwave and millimeter-wave engineering. It comprises a periodic structure that enables the propagation of electromagnetic waves along its axis. We have provided a detailed analysis of the MB-RGW, which includes its design, simulation, and experimental results. A prototype filter, designed according to specifications, was successfully produced with a fabricated circuit area measuring 42.25 mm×76.25 mm× 8.8 mm. We demonstrate that the MB-RGW can achieve multiple bands with a single structure, making it a versatile and efficient device for a wide range of applications. We also present a detailed analysis of the factors that affect the performance of the MB-RGW, including the geometry of the ridge and the spacing between ridges. Our experimental results show that the MB-RGW can achieve high levels of attenuation and isolation, making it a promising candidate for the use in microwave and millimeterwave circuits and systems. The experimental results show S 11 smaller than −20 dB over relative bandwidths, and S 21 has a maximum of −0.07 dB. The proposed filter demonstrates four resonances at frequencies of 10.6 GHz, 12.6 GHz, 14.7 GHz, and 17.1 GHz, catering to mobile and fixed radio locations as well as satellite applications. It exhibits a fractional bandwidth of 0.44% at 3 dB in the X-Band and approximately 0.57% to 0.61% at 3 dB bandwidth in the Ku-band. The filter offers a compact, cost-effective, and easily implementable solution for satellite communication systems, including space operations, earth exploration, satellite TV broadcasting, and fixed satellite services (FSS). Overall, this paper provides a comprehensive overview of the MB-RGW and its potential for the use in a range of applications.

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Section: Unit Cell Designmentioning

confidence: 99%

Highly-selective Ridge Gap Waveguide Based Filters for Multi-band Satellite Applications

Chhasatia¹,

Chaudhari²,

Patel³

2023

PIER M

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“…However, when simulating the diplexer including lossy materials and the inverted microstrip to microstrip transition, the losses are much higher than those predicted by the separate filters, as shown in Figure 5c. Still, the overall losses as a diplexer are much lower than for the examples made in standard microstrip technology in the Ka-band [35,[43][44][45][46]. Nevertheless, a careful analysis of the origin of the losses was made.…”

Section: Losses Studymentioning

confidence: 99%

Ka-Band Diplexer for 5G mmWave Applications in Inverted Microstrip Gap Waveguide Technology

2020

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A new cost-efficient, low-loss Ka-band diplexer designed in inverted microstrip gap waveguide technology is presented in this paper. Gap waveguide allows to propagate quasi-TEM modes in the air between two metal plates without the need for contact between them by using periodic metasurfaces. The diplexer is realized by using a bed of nails as AMC (Artificial Magnetic Conductor), first modeled with a PMC (Perfect Magnetic Conductor) surface for design simplification, and two fifth order end-coupled passband filters (BPFs) along with a power divider. The experimental verification confirms that the two channels centered at 24 GHz and 28 GHz with 1 GHz of bandwidth show measured insertion losses of 1.5 dB and 2 dB and 60 dB of isolation between them. A slight shift in frequency is observed in the measurements that can be easily explained by the variation in the permittivity of the substrate.

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“…The resonance conditions are determined by 1 , 2 and as given in (2). These three factors are required to generate the resonance that, and a dual mode filter can be designed by using SIR [19,20].…”

Section: Dual-mode Stepped Impedance Resonator (Sir)mentioning

confidence: 99%

Design of dual-mode SIR bandpass filter based on shorting pin for wireless communication applications

Namiq¹,

Jalil²

2020

IJEECS

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<p id="docs-internal-guid-6a9909c3-7fff-4ac4-3e3a-a2f823e1246f" dir="ltr"><span>A new design of microstrip dual mode band-pass-filter (BPF) by using stepped impedance resonator (SIR) based on shorting pin is proposed. The designed structure use two U-shaped tri-sections SIR resonators coupled to each other and a two coupled line feeding ports each of 50 ohm impedance. Shorting pins are used to excite the upper frequency passband in the re sponse of the filter due to current distribution perturbation at the locations of the shorting pins. For demonstration, WLAN (5.2-5.7 GHz) and GSM (1.85-1.99 GHz) and Advanced Wireless Services (AWS) (1.71-1.755 GHz). The return losses are -32.469 dB and -26.18 dB respectively at the operating frequencies of the filter. The results of insertion losses of the filter is 0.37 and 0.24 dB during the operating bands and more than 25 dB which consider a good out-of- band rejection. </span></p>

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Dual-mode bandpass filter using microstrip SIR at Ka band

Cited by 7 publications

References 10 publications

Highly-selective Ridge Gap Waveguide Based Filters for Multi-band Satellite Applications

Highly-selective Ridge Gap Waveguide Based Filters for Multi-band Satellite Applications

Ka-Band Diplexer for 5G mmWave Applications in Inverted Microstrip Gap Waveguide Technology

Design of dual-mode SIR bandpass filter based on shorting pin for wireless communication applications

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