- 标题
- 摘要
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- 实验方案
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[IEEE 2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) - Tel-Aviv, Israel (2019.11.4-2019.11.6)] 2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) - Overview of High Frequency Electronics Integration Concepts for Gap waveguide based High Gain Slot Antenna Array
摘要： This paper presents an overview of different low-loss microstrip to waveguide transition designs suitable for integrating millimeter wave electronics to a gap waveguide based slot array. Typically, E-plane probe type of transitions are widely used at mmWave frequency range to couple RF signal from a TX/RX MMIC to the waveguide section. H-plane split-blocks are avoided due to leakage problem from tiny slits formed by imperfect metal connections. On the other hand, the traditional slot arrays are built using H-plane split blocks. This makes it very challenging to integrate electronics and other passive components such as diplexer filter directly to a high gain planar antenna array. To overcome this above mentioned problem, we propose to use low-loss H-plane transitions to integrate RF electronics with the multi-layer gap waveguide based slot array. We demonstrate a completely packaged front-end at E-band, showing the potential of the gap waveguide technology to build a very compact full-duplex wireless system.
关键词： E-plane transition,Slot arrays,Full-duplex,Integration and packaging,Gap waveguide
更新于2025-09-23 15:21:01
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Groove Gap Waveguide Filter Based on Horizontally Polarized Resonators for V-Band Applications
摘要： In this article, resonators based on air-?lled rectangular cavity consisting of one perfect magnetic conductor (PMC) wall and the rest of walls as the perfect electric conductor (PEC) are proposed. The proposed cavity can be engraved in the top or bottom metal plate of a gap waveguide structure, and the PMC wall is realized by the periodic metallic pins located within the gap waveguide geometry. The resonant frequency and electromagnetic (EM) ?eld distribution of the cavity are investigated, and it is shown that the electric ?eld is horizontally polarized with respect to the wave propagation direction. Two bandpass ?lters are designed by inserting the proposed cavity in the cutoff region of the gap waveguide, on the top and bottom plates. In the latter case, all pins are the same, and the cavities and coupling structure are easily implemented by engraving the top plate. Therefore, by using this concept, a common pin plate can be used to implement different passive millimeter-wave devices. For instance, three different ?lters working at 60, 65, and 70 GHz with a common bottom pin plate are designed and fabricated. The measured results show a minimum insertion loss of 1.4, 1.1, and 1.1 dB with 0.83%, 1.4%, and 1.8% fractional bandwidth for the three bandpass ?lter designs, respectively, with aluminum as metal.
关键词： perfect magnetic conductor (PMC),Antenna system,millimeter-wave ?lter,gap waveguide
更新于2025-09-23 15:21:01
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[IEEE 2019 International Conference on Microwave and Millimeter Wave Technology (ICMMT) - Guangzhou, China (2019.5.19-2019.5.22)] 2019 International Conference on Microwave and Millimeter Wave Technology (ICMMT) - Integrated Substrate Gap Waveguide Wideband Bandpass Filter with Two Transmission Zeros and Wide Stopband
摘要： In this paper, an integrated substrate gap waveguide (ISGW) bandpass filter is proposed. The filter consists of three layers of dielectric substrates, base layer, middle layer and top layer. The base layer is used to obtain substrate an integrated waveguide (SIW) filter, the middle layer is a substrate gap layer which is used for a gap layer between the top and base layer, and the top layer is used to obtain perfect magnetic conductor (PMC) layer. An ISGW filter is designed to validate the concept. The filter has a fractional bandwidth of 32.2% and two transmission zeros at 14 and 22.8 GHz, and wide passband, wide stopband and high selectivity of the passband are achieved.
关键词： Integrated substrate gap waveguide,wide stopband,bandpass filter,transmission zeros
更新于2025-09-23 15:19:57
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A new type of the air-filled substrate integrated gap waveguide resonator
摘要： This article presents the design and analysis of an air-filled substrate integrated gap waveguide (ASIGW) resonator. The electromagnetic field of each resonant mode in the resonator is studied by theoretical modeling and EM simulation. Besides, the relationship between the dimensions and Qu is analyzed and the Qu of the resonator can be as high as 2080 at Ku band. Compared with conventional rectangular waveguide resonator and gap waveguide (GW) resonator, the proposed ASIGW resonator can be fabricated more easily. Compared with the substrate integrated waveguide resonator, the ASIGW resonator is more tolerant with dimensional errors and with less degenerate modes. As an example, a fifth-order band-pass filter based on the ASIGW resonators is presented to verify the previous conclusions.
关键词： band-pass filter,air-filled substrate integrated gap waveguide (ASIGW) resonator
更新于2025-09-23 15:19:57
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Beam Splitting of a Novel Triple-Beam Slot Antenna Array Based on Radial Gap Waveguide
摘要： We present a phenomenon of beam splitting caused by asymmetric boundaries. We design and manufacture a novel triple-beam slot antenna array working at X-band to verify this phenomenon and show its potential applications. The corporate-feed slot antenna is based on a radial ridge gap waveguide (RGW) power divider, and is excited by a central coaxial connector. To achieve good efficiency, a radial SMA-RGW transition structure is proposed. Six different symmetrical and asymmetrical triple-beam RGW slot antenna arrays are mentioned in this paper. Among them, two symmetrical and one asymmetrical triple-beam RGW slot antenna arrays are fabricated and measured, and the measured results have good agreement with full-wave simulations, demonstrating stable performance of the proposed antenna array. Compared with the traditional slot antenna array, the proposal is capable of generating any number of beams in theory, especially odd beams, and each beam can be individually designed. The proposed shared-aperture radial multi-beam antenna can achieve simultaneously multi-directional coverage. It can meet the needs of multi-target tracking and imaging in blind spot detection and collision warning scenarios of the vehicular radar system. It also has potential value to satisfy the need of large-scale users connection in the wide-area continuous coverage scenario of the fifth generation communication system.
关键词： Beam splitting,slot antenna array,radial feeding network,ridge gap waveguide
更新于2025-09-23 15:19:57
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[Institution of Engineering and Technology 12th European Conference on Antennas and Propagation (EuCAP 2018) - London, UK (9-13 April 2018)] 12th European Conference on Antennas and Propagation (EuCAP 2018) - V-Band High-Gain Slot Antenna Using Single Layer Partially Reflective Surface
摘要： In this paper, a novel design of a high-gain and wideband slot antenna operating at V-band is presented. The gain and bandwidth enhancements are achieved by feeding a simple radiating slot with a ridge-gap waveguide and placing a single layer superstrate above the antenna. The superstrate is based on a complementary frequency selective surface which provides positive phase gradient over the frequency range 47 to 65 GHz. Numerical simulations of the proposed design demonstrate a gain enhancement of 8.3 dB at 63 GHz when compared with the antenna without the superstrate, and 3-dB gain bandwidth of about 5 GHz. Moreover, the antenna is matched to the feeding ridge-gap waveguide over the frequency range of 56.0 to 66.7 GHz.
关键词： ridge-gap waveguide,high-gain,V-band
更新于2025-09-19 17:15:36
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A 16 ?? 16-Element Slot Array Fed by Double-Layered Gap Waveguide Distribution Network at 160 GHz
摘要： In this article, a slot array with double-layered full-corporate-fed distribution network by ridge gap waveguide (RGW) in the G-band is presented. The array antenna proposed in this article contains 16 × 16-element radiation slots fed by air-?lled ridge gap waveguide distribution network that achieves high-ef?ciency. Gap waveguide technology avoids the demand for perfect electrical contact in millimeter waves, therefore the expensive diffusion bonding and the laser welding processes are not demanded. Moreover, the high-accurate Computerized Numerical Control (CNC) machining is applied for the fabrication. Due to the limited layout space for the distribution network, two types of universal stepped cavity power dividers are presented in this article. The proposed array antenna is fed by a standard WR-5 waveguide at the bottom. Furthermore, the tested outcomes show that the proposed 16×16-element array has a gain larger than 30 dBi with over 50% antenna ef?ciency in the frequency range of 155-171 GHz.
关键词： slot array antenna,high-ef?ciency,Gap waveguide technology,160 GHz
更新于2025-09-19 17:13:59
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[IEEE 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting - Atlanta, GA, USA (2019.7.7-2019.7.12)] 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting - Wideband printed ridge gap waveguide differential feeding aperture antenna for millimeter wave applications
摘要： Millimeter wave has gained great attention for 5G communications and imaging systems. Building a high gain antenna is essential to such systems. In this paper, the design of a high gain differential feeding aperture antenna in the printed ridge gap waveguide technology is presented. It has a fractional bandwidth of 16.1% at 30GHz with S11<?10dB and peak gain of 12.8dBi. The aperture efficiency is 52% and the radiation pattern is stable over the operating frequency range. The 3-dB gain bandwidth is 15.4%dBi.
关键词： 5G communications,Millimeter wave,high gain antenna,printed ridge gap waveguide,differential feeding aperture antenna
更新于2025-09-16 10:30:52
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3-D-Printed Modified Butler Matrix Based on Gap Waveguide at W-Band for Monopulse Radar
摘要： This article presents the design and fabrication of low-loss, -weight, and -cost, modified Butler matrix in groove gap waveguide technology at W-band, implemented by additive manufacturing. The design, simulations, and measurements of the elements that conform to the modified Butler each of matrix are presented. The proposed modified Butler matrix is asymmetric and oriented to an easy assembly with a radial antenna in order to obtain simultaneous sum and difference patterns for a narrowband radar application. The measured individual components of the modified Butler matrix fit very well with the simulations. As for the full modified Butler matrix, measurements provide a 0.7% bandwidth below ?20 dB for sum and difference ports centered at 94 GHz. The amplitude and phase imbalance are below 1.5 dB and 20?, respectively. This narrow bandwidth is due to the difference in length between input and output ports due to the asymmetry of the design. The total losses of the modified Butler matrix are below 1 dB.
关键词： low profile,distribution network,Additive manufacturing,butler matrix,low cost,W-band,point-to-point communications,low weight,groove gap waveguide (GGW),radar,low loss,monopulse,space debris
更新于2025-09-16 10:30:52
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[IEEE 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) - Granada, Spain (2019.9.9-2019.9.13)] 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) - mmWave Array Antenna based on Gap Waveguide Technology for 5G Applications
摘要： The gap waveguide technology has been shown to provide low loss and easy-to-manufacture antenna solutions in the mmWave frequencies. A gap waveguide array antenna with scanning ability within ±45? designed with focus on 5G applications is presented here. The computed active re?ection coef?cient of the array is less than ?10 dB for all scan angles and the broadside gain is 23 dBi. The proposed antenna can be integrated with active components to increase EIRP and coverage range.
关键词： mmWave,array antenna,gap waveguide,5G applications
更新于2025-09-16 10:30:52