Compact Multilayer Filter in Empty Substrate Integrated Waveguide With Transmission Zeros

Belenguer, Ángel; Fernández, Marcos D.; Ballesteros, José A.; Dios, Juan J. de; Esteban, H.; Boria, Vicente E.

doi:10.1109/tmtt.2018.2823306

Cited by 33 publications

(17 citation statements)

References 26 publications

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“…The performance of ESIW devices in terms of losses and quality factor, is much better than those implemented in SIW technology, approaching the performance of rectangular waveguide devices, while the low cost and low profile of ESIW is similar to that of SIW. Many communication devices have also been successfully implemented in ESIW, such as transitions [5]- [8], filters of different order and frequency bands [4], [9], filters with increased height and quality factor [10], compact filters [11], [12], 90 • hybrid directional couplers [13], Moreno cross-guide directional couplers [14], and antennas [15], [16]. Other similar solutions to ESIW technology have also been proposed.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stability Analysis of Filters in Substrate Integrated Technologies Under Atmospheric Pressure and Vacuum Conditions

et al. 2020

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Substrate integrated (SI) technologies, either completely or partially filled with dielectric, as well as completely empty (i.e. without any dielectric material), have been object of intense research in the last years. Their performance in terms of losses, cost and size are midway between those of classical planar lines and rectangular waveguides. Many communication devices have already been successfully designed, manufactured and measured in all these SI technologies. But these measurements are mostly done at room temperature under atmospheric pressure conditions. However, the good results (in terms of low loss, profile and cost) of these novel technologies, especially the completely empty versions, close to the performance of the rectangular waveguide, make them a very good alternative for being used in small satellite payloads. Up to now, few attention has been given to the thermal analysis of these SI technologies, still missing a complete comparative study of these effects under both, atmospheric pressure and vacuum conditions. In this work the same filter is implemented on four different SI technologies (including completely and partially filled with dielectric, as well as empty-no dielectric-versions). The four filters are designed, manufactured, and measured at different temperatures according to the thermal testing standards for space applications. The thermal study is performed under atmospheric pressure conditions and, for the first time, under high vacuum conditions. Finally, a comparison with all previous available thermal studies (all of them performed at atmospheric pressure levels) is included. INDEX TERMS Cavities, empty substrate-integrated coaxial line (ESICL), empty substrate-integrated waveguide (ESIW), filters, microwave integrated circuits, payloads, rectangular waveguide, satellites, substrate integrated waveguide (SIW), space communications, substrate integrated circuits (SIC), thermal stability coefficient of thermal expansion (CTE).

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Section: Introductionmentioning

confidence: 99%

Thermal Stability Analysis of Filters in Substrate Integrated Technologies Under Atmospheric Pressure and Vacuum Conditions

et al. 2020

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“…It exhibits a fractional bandwidth (FBW) of 10.1% at 33.03 GHz. A higher degree of compactness was achieved by stacking the cavity resonators in a folded form, and a fifth‐order BPF at 15 GHz with a FBW of 3% was designed 8 . The reported BPF topologies can be seen as improved versions of traditional ones based on SIW technology.…”

Section: Introductionmentioning

confidence: 99%

Wideband microstrip‐to‐air‐filled substrate integrated waveguide transition with controllable band‐pass performance

Liu

Wang

Sun

et al. 2020

Micro & Optical Tech Letters

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A novel wideband back‐to‐back microstrip‐to‐air‐filled substrate integrated waveguide (AFSIW) transition with controllable band‐pass performance is presented. The wideband transition is constructed by a gradient microstrip and a section of widened partially dielectric‐filled AFSIW. The sharp rejection performance above the pass band is achieved by taking advantage of the notch characteristics of the widened partially dielectric‐filled AFSIW section. The lower stop band is determined by the cut‐off characteristic of the intermediate AFSIW between the back‐to‐back transitions. The relationship between the band‐pass response and the dimensional parameters of the transition is investigated. A prototype is designed, manufactured and measured. The measured fractional bandwidth (FBW) is 57.63% centered at 14.75 GHz. The suppression over 20 ~ 25 GHz is better than 25 dB, and a transmission zero with a suppression of 51.7 dB is introduced at 1 GHz away from the upper‐edge frequency of the pass band.

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“…Therefore, it can be solved if the different total lengths of phase shifters in the propagation path and the equal total lengths of phase shifters in the external structure are compatible. Recently, a novel vertical transition in empty substrate integrated waveguide (ESIW) has been reported in [26,27]. It focuses on multilayer compact devices in ESIW with the same height for every dielectric layer.…”

Section: Introductionmentioning

confidence: 99%

3-D empty substrate integrated waveguide phase shifter with equal length

Peng

Zhao

Dong

et al. 2019

IEICE Electron. Express

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In this letter, a novel 3-D empty substrate integrated waveguide (ESIW) phase shifter with equal length has been proposed. The vertical transitions have been introduced into 3-D ESIW phase shifter in the propagation path. Based on it, the different total lengths of phase shifters in the propagation path and the equal total lengths of phase shifters in the external structure are compatible. The phase shifter consists of multi-layer PCB: top layer, interlayer, middle layer, ESIW PCB, and bottom layer. The theory and design process of ESIW phase shifter have been explained and discussed in detail. To demonstrate its feasibility, the 3-D ESIW phase shifters with equal external length are designed, manufactured and measured. Final results show that the phase shifts of 45.2°±3.7° and 89.7°±4.7° can be achieved over the entire Ka-band. Besides, the return losses and the insertion losses are better than 12.5 dB, and 1.9 dB, respectively.

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Compact Multilayer Filter in Empty Substrate Integrated Waveguide With Transmission Zeros

Cited by 33 publications

References 26 publications

Thermal Stability Analysis of Filters in Substrate Integrated Technologies Under Atmospheric Pressure and Vacuum Conditions

Thermal Stability Analysis of Filters in Substrate Integrated Technologies Under Atmospheric Pressure and Vacuum Conditions

Wideband microstrip‐to‐air‐filled substrate integrated waveguide transition with controllable band‐pass performance

3-D empty substrate integrated waveguide phase shifter with equal length

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