Groove Gap Waveguide Filter Based on Horizontally Polarized Resonators for V-Band Applications

Rezaee, Morteza; Zaman, Ashraf Uz

doi:10.1109/tmtt.2020.2986111

Cited by 33 publications

(14 citation statements)

References 35 publications

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“…2(b)]. However, in [18], only the widths of both coupling windows are modified, while the heights and lengths are fixed. In this work, it has been verified that, for maximizing the PPHC of the filter, it is advisable to set the dimensions W i j = W S1 = W (where W is the width of the waveguide propagation section) to avoid high | E| on the lateral edges of the coupling cavities (plotted in blue in Fig.…”

Section: A Design Of the Intercavity And Input (Output) Couplingsmentioning

confidence: 99%

“…Different topologies of GW filters have been proposed, such as the ones based on inductive irises [19]- [21], capacitive irises [22], or coaxial resonators [23]. Moreover, a novel horizontally polarized cavity has been proposed in [18] for the design of BPFs, where several advantages are introduced with respect to other previous configurations. This recent structure allows a simple way to implement a bandpass or bandstop filter behavior by the engraving of the resonant cavities on the top or bottom metal plates of GW structures.…”

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confidence: 99%

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Peak Power Handling Capability in Groove Gap Waveguide Filters Based on Horizontally Polarized Resonators and Enhancement Solutions

Morales-Hernández

Sánchez-Soriano

Ferrando-Rocher

et al. 2022

IEEE Microw. Wireless Compon. Lett.

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This letter studies the peak power handling capability (PPHC) in groove gap waveguide filters based on horizontally polarized resonators. Moreover, a modification of the resonant cavity is proposed, where the central pins of the original structure are replaced by a rounded metal block. As a result of this change, the TE 101 -like mode can still be excited, but the maximum electric field strength is shifted to the center of the cavity, which leads to a higher PPHC. The main advantages of the original structure are maintained, and greater robustness in the manufacturing process is achieved. Next, some guidelines for the design of the coupling windows and the dimensions of the blocks are shown to minimize the electric field strength and, consequently, maximize the PPHC. Finally, two third-order bandpass filters (with pins and with blocks) centered at 16 GHz have been manufactured and tested in a measurement campaign, where a PPHC enhancement of 8.7 dB at high pressures is achieved for the novel solution presented in this work.

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Section: A Design Of the Intercavity And Input (Output) Couplingsmentioning

confidence: 99%

mentioning

confidence: 99%

Peak Power Handling Capability in Groove Gap Waveguide Filters Based on Horizontally Polarized Resonators and Enhancement Solutions

Morales-Hernández

Sánchez-Soriano

Ferrando-Rocher

et al. 2022

IEEE Microw. Wireless Compon. Lett.

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show abstract

“…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%

“…Therefore, the fabrication of these structures is affordable and cost-effective, particularly at high-frequency ranges. Accordingly, many millimeter-wave devices and applications are presented based on gap waveguide technology, such as planar array antennas [ 15 , 16 , 17 , 18 ], filters [ 19 , 20 , 21 ], amplifiers [ 22 ], couplers [ 23 , 24 , 25 ], phase shifters [ 26 ], and rotary joints [ 27 ].…”

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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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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“…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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Groove Gap Waveguide Filter Based on Horizontally Polarized Resonators for V-Band Applications

Cited by 33 publications

References 35 publications

Peak Power Handling Capability in Groove Gap Waveguide Filters Based on Horizontally Polarized Resonators and Enhancement Solutions

Peak Power Handling Capability in Groove Gap Waveguide Filters Based on Horizontally Polarized Resonators and Enhancement Solutions

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

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

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