A Waveguide Switch Based on Contactless Gap Waveguide Technology

Tayebpour, Jalaledin; Ahmadi, Behzad; Fallahzadeh, M.; Shekoofa, Omid; Torabi, Abdorreza

doi:10.1109/lmwc.2019.2950164

Cited by 23 publications

(4 citation statements)

References 17 publications

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“…Figure 1 shows the geometry of the periodic pins and a groove gap waveguide (GGW) structure and dimensions, as well as the simulated dispersion diagram of the periodic pin structure. To realize the PMC surface, a periodic texture of metallic pins [ 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ] or holes [ 29 , 30 ] can be used, and by placing a metallic plate on its top, the bandgap is achieved. The periodic pin structures are more compact and have a broader bandwidth compared to the holey structures.…”

Section: Wr-62 To Groove Gap Waveguide Transitionmentioning

confidence: 99%

“…In addition, gap waveguide technology is a great candidate for designing microwave switches, due to its contactless feature. In particular, a gap waveguide microwave switch is reported for Ku-band applications [ 28 ]. The proposed structure of the switch is complicated as it uses a cylindrical pin structure, and therefore, a complex manufacturing process is required to fabricate the switch.…”

Section: Introductionmentioning

confidence: 99%

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A 12–20 GHz Wideband High-Power SP2T Switch Based on Gap Waveguide Technology

Alazemi

Farahbakhsh

Zarifi

2021

Sensors

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A novel wideband high-power single-pole two-throw (SP2T) switch based on gap waveguide technology is presented in this article. The proposed switch has a SP2T structure and consists of three standard WR62 waveguide ports. Due to the advantage of gap waveguide technology, the switch design structure requires no electrical contact between its different parts, and the leakage of the electromagnetic wave is suppressed. The proposed switch has an air gap between its parts. As a result, the sliding part of the switch can be moved freely to change the switch states. Consequently, a low-precision and low-cost fabrication can be utilized. The simulation and measurement of the proposed switch indicate that a 50% operating frequency bandwidth covering the range of 12-20 GHz can be achieved. The switch input return-loss is better than 15 dB within the frequency bandwidth, whereas the insertion loss and isolation levels of the proposed design are above 0.15 dB and better than 65 dB, respectively.

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Section: Wr-62 To Groove Gap Waveguide Transitionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A 12–20 GHz Wideband High-Power SP2T Switch Based on Gap Waveguide Technology

Alazemi

Farahbakhsh

Zarifi

2021

Sensors

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“…1, giving more manufacturing robustness compared to other waveguides such as rectangular waveguide. At lower frequencies, GGW technology has also been used where having a contactless geometry provides a useful advantage, for instance, to design moveable structures [5]. This technology is based on two parallel metal plates where one of them has a metal pin bed that introduces a high impedance condition at the plane over the pins.…”

Section: Introductionmentioning

confidence: 99%

Robust Design of 3D-Printed W-Band Bandpass Filters Using Gap Waveguide Technology

Santiago

Tamayo‐Domínguez

Laso

et al. 2022

J Infrared Milli Terahz Waves

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In this paper, a W-band 3D-printed bandpass filter is proposed. The use of higher-order TE10n modes in groove gap waveguide (GGW) technology is evaluated in order to alleviate the manufacturing requirements. In addition to the use of higher-order modes, the coupling between them is analyzed in detail to improve the overall fabrication robustness of the component. This allows the implementation of narrow-band filters operating at millimeter-wave frequency bands (or above), which usually demand complex manufacturing techniques to provide the high accuracy required for this kind of devices. In order to show the applicability of the proposed method, a narrow-band 5th-order Chebyshev bandpass filter centered at 94 GHz, which can be easily fabricated by state-of-the-art stereolithographic (SLA) 3D-printing techniques followed by silver coating, is shown. Excellent measured performance has been obtained.

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“…There is a clear need to develop GWT that not only maintains the advantages of other technologies but also addresses the above mentioned fabrication and assembly challenges, especially at millimetre-wave frequency range. According to the review of literature, GWT has been used to design a wide range of microwave and highfrequency components, such as planar array antenna [18][19][20][21][22], filter [23][24][25][26], coupler [27][28][29][30], phase shifter [31,32] and switch [33,34].…”

Section: Introductionmentioning

confidence: 99%

Design and development of broadband gap waveguide‐based 0‐dB couplers for Ka‐band applications

Zarifi

Farahbakhsh

Zaman

2022

IET Microwaves Antenna & Prop

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The design and fabrication of a wideband millimetre‐wave 0‐dB coupler is proposed in this paper using gap waveguide technology for low‐loss and high‐power applications in 30‐GHz frequency band. To overcome the fabrication challenges in millimetre‐wave frequencies, the gap waveguide technique is utilised. Two gap waveguide‐based coaxial‐ and waveguide‐fed 0‐dB couplers are designed with broadband performance, high return loss, acceptable coupling flatness and high isolation. For verifying the performance of the proposed structures, a prototype of the waveguide‐fed 0‐dB coupler is manufactured and measured. The measurement results show that the return and insertion losses and the isolation of the fabricated 0‐dB coupler is better than 18 dB, 0.5 and 18 dB, respectively, in the specified frequency range from 26.2 to 34 GHz. Moreover, the breakdown power level of the proposed millimetre‐wave structures is in kW orders to satisfy the high‐power requirements.

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A Waveguide Switch Based on Contactless Gap Waveguide Technology

Cited by 23 publications

References 17 publications

A 12–20 GHz Wideband High-Power SP2T Switch Based on Gap Waveguide Technology

A 12–20 GHz Wideband High-Power SP2T Switch Based on Gap Waveguide Technology

Robust Design of 3D-Printed W-Band Bandpass Filters Using Gap Waveguide Technology

Design and development of broadband gap waveguide‐based 0‐dB couplers for Ka‐band applications

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