The Experts below are selected from a list of 6648 Experts worldwide ranked by ideXlab platform
Ke Wu - One of the best experts on this subject based on the ideXlab platform.
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$E$ -Band Substrate Integrated Waveguide Orthomode Transducer Integrated With Dual-Polarized Horn Antenna
IEEE Transactions on Antennas and Propagation, 2018Co-Authors: Haiyan Jin, Yong Mao Huang, Hailu Jin, Ke WuAbstract:This paper presents an E-band substrate integrated waveguide (SIW) dual-polarized Antenna system, which consists of an orthomode transducer (OMT) and a dual-polarized Horn Antenna. On the basis of a two-layer substrate design, the function of OMT is realized by utilizing an SIW section to excite TE10 mode for the vertical polarization, a quasi-coaxial stripline to excite quasi-TEM mode for the horizontal polarization. And also, a slot line transition is placed at the common port of the two structures for impedance matching with the ridge SIW dual-polarized Horn Antenna. In this way, the dual-polarized Horn Antenna is designed with an exponential ridge structure simultaneously for better impedance matching and higher efficiency of the Antenna. To verify the functionality of the proposed integrated OMT-Antenna structure, an experimental prototype is fabricated and measured, and a good agreement is found between its simulation and measured results. Over the frequency range of 83–87 GHz, return loss better than 10 dB at all ports and cross-polarization less than −25 dB are obtained. The maximum Antenna gain is about 14 dBi for the horizontal polarization and 15.2 dBi for the vertical polarization. It is believed that the proposed OMT-Antenna design is suitable for ultrahigh capacity millimeter-wave backhaul applications in future wireless communication systems.
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millimeter wave integrated pyramidal Horn Antenna made of multilayer printed circuit board pcb process
IEEE Transactions on Antennas and Propagation, 2012Co-Authors: Nasser Ghassemi, Ke WuAbstract:Due to the low atmospheric absorption over W-band, numerous applications are expected, which should be developed at low cost. Short wavelength makes the dimension of Antennas in this frequency range small, which usually requires sophisticated and expensive fabrication process. This communication presents a class of integrated wideband pyramidal Horn Antennas which can be made of low-cost multilayered printed circuit board (PCB) process. The proposed Horn Antenna radiates along the broadside to the substrate and uses substrate integrated waveguide (SIW) as its feeder. Transverse slot on the top metallic surface at the end of SIW is deployed to drive the Horn Antenna. Metalized via holes are used to synthesize the Horn walls. The opening of the Horn Antenna is discretely flared from the bottom to the top layer. Measured bandwidth of the Antenna is 35 GHz (70-105 GHz) while a relatively constant gain of 10 ± 1 dB is obtained over most of the bandwidth.
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Filtenna consisting of Horn Antenna and substrate integrated waveguide cavity FSS
IEEE Transactions on Antennas and Propagation, 2007Co-Authors: Guo Qing Luo, Xiao Xin Yin, Ji Xin Chen, Zhen Qi Kuai, Hong-jun Tang, Wei Hong, Ke WuAbstract:An integrated module with filtering and radiation performance realized by covering substrate integrated waveguide (SIW) cavity frequency selective surface (FSS) at aperture of Horn Antenna has been investigated in this paper. The module has functions of bandpass filter and Horn Antenna, so it is called a "filtering Antenna" (filtenna). It is very suitable for applications in military platforms where FSS is used for Antennas and radars' radar cross section (RCS) reduction. The filtenna is simulated and optimized with CST software and its performance is verified by experiments. From simulated and measured results it can be found that the proposed structure keeps characteristics of return loss, radiation pattern and gain of the Horn Antenna within desired frequency band, meanwhile presents effective reflection to interference signals at out-band. Using this structure the volume and cost of communication systems in military platforms can be effectively reduced
Yang Cai - One of the best experts on this subject based on the ideXlab platform.
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design of low profile metamaterial loaded substrate integrated waveguide Horn Antenna and its array applications
IEEE Transactions on Antennas and Propagation, 2017Co-Authors: Yang Cai, Yingsong Zhang, Liu Yang, Yufan Cao, Zuping QianAbstract:A metamaterial-loaded substrate integrated wave-guide (SIW) Horn Antenna and its array application are researched in this communication. The mushroom-type metamaterial is placed in front of SIW Horn aperture, and much improvement in impedance matching is achieved on a 1/ $20~\lambda _{0}$ -thickness substrate. Due to the backward wave generated by the metamaterial, backward endfire radiation pattern is observed for the proposed Antenna. Experimental results indicate that a fractional impedance bandwidth of 10.6% is obtained for a fabricated prototype. Furthermore, a shunt four-element array and a monopulse four-element array are designed based on the novel SIW Horn element to further enhance the radiation performance. Results show that performances of wide operating bandwidth, low profile, and backward endfire radiation pattern are maintained for the designed two arrays.
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compact wideband dual circularly polarized substrate integrated waveguide Horn Antenna
IEEE Transactions on Antennas and Propagation, 2016Co-Authors: Yang Cai, Zuping Qian, Wenquan Cao, Yingsong Zhang, Shujie ShiAbstract:In this communication, a compact circularly polarized (CP) substrate integrated waveguide (SIW) Horn Antenna is proposed and investigated. Through etching a sloping slot on the common broad wall of two SIWs, mode coupling is generated between the top and down SIWs, and thus, a new field component as TE01 mode is produced. During the coupling process along the sloping slot, the difference in guide wavelengths of the two orthogonal modes also brings a phase shift between the two modes, which provides a possibility for radiating the CP wave. Moreover, the two different ports will generate the electric field components of TE01 mode with the opposite direction, which indicates the compact SIW Horn Antenna with a dual CP property can be realized as well. Measured results indicate that the proposed Antenna operates with a wide 3-dB axial ratio bandwidth of 11.8% ranging from 17.6 to 19.8 GHz. The measured results are in good accordance with the simulated ones.
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design of compact air vias perforated siw Horn Antenna with partially detached broad walls
IEEE Transactions on Antennas and Propagation, 2016Co-Authors: Yang Cai, Zuping Qian, Wenquan Cao, Yingsong Zhang, Lei WangAbstract:A novel substrate-integrated waveguide (SIW) Horn Antenna with partially detached broad walls is designed and analyzed. The conventional SIW Horn Antenna suffers from narrow-operating bandwidth, which mainly results from the mismatch at the Horn aperture between the substrate and the free space. However, the detachment of the broad walls makes the left substrate not only act as wave-guiding structure but also impedance transformer, which brings much size reduction in comparison with conventional SIW Horn Antenna. Moreover, the substrate with graded dielectric constants distributed in the propagating direction is realized through perforating air-vias with different diameters to further improve the radiation performance. Results indicate that the proposed Antenna operates from 17.7 to 26.7 GHz with a nearly constant peak-radiating gain between 8 and 9 dBi at end-fire direction. Stable end-fire radiation patterns can be realized in the whole operating band. Above all, the proposed technology makes it compact to design SIW Horn Antenna of high performance without extra extension after the aperture of the radiating Horn.
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compact wideband siw Horn Antenna fed by elevated cpw structure
IEEE Transactions on Antennas and Propagation, 2015Co-Authors: Yang Cai, Zuping Qian, Wenquan Cao, Yingsong Zhang, Jun Jin, Liu Yang, Nan JingAbstract:This communication presents a compact substrate-integrated waveguide (SIW) H-plane Horn Antenna fed by a novel elevated coplanar waveguide (ECPW) structure. First, the wideband characteristic of the SIW Horn Antenna is achieved through loading a dielectric slab with gradually decreasing dielectric constants, which can be realized through simply perforating different air vias on the extended slab. Second, in order to sustain an efficient feeding for the relatively thick substrate ( $0.27 {\lambda}_{0}$ ), an additional metal ground is inserted in the middle of the grounded coplanar waveguide (GCPW). Moreover, a triangular-shaped transition structure is placed at the end of the ECPW to smoothly transmit the energy from the thin ECPW to the thick SIW Horn Antenna. Finally, a prototype is fabricated to validate the proposed concept. Measured results indicate that the proposed Horn Antenna operates from 17.4 to 24 GHz. Stable radiation patterns can be observed in the whole operating band. The measured results show good accordance with the simulated ones. Above all, the proposed Antenna occupies an area of $22 \times 56.5 \times 4\;{\text{mm}}^{3}$ ( $1.47{\lambda}_{0} \times 3.77 {\lambda}_{0} \times 0.27{\lambda}_{0}$ ), which is much more compact than the previous rectangular waveguide-fed Horn Antenna ( $2.33{\lambda}_{0} \times 9.21{\lambda}_{0} \times 0.31{\lambda}_{0}$ ) (where ${\lambda}_{0}$ is the wavelength at 20 GHz in the free space).
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bandwidth enhancement of siw Horn Antenna loaded with air via perforated dielectric slab
IEEE Antennas and Wireless Propagation Letters, 2014Co-Authors: Yang Cai, Zuping Qian, Yingsong Zhang, Jun Jin, Wenquan CaoAbstract:A substrate integrated waveguide (SIW) Horn Antenna loaded with air-via perforated dielectric slab for bandwidth enhancement is proposed in this letter. The narrow impedance bandwidth of the planar Horn Antenna is mainly resulting from the discontinuity between the substrate and air. By simply drilling air-vias with different diameters in the substrate extended from the Horn aperture, a smooth transition from substrate to air can be achieved, which can enhance the impedance bandwidth of the Antenna in much degree. Measured results show that the enhanced impedance bandwidth of 40% from 16 to 24 GHz is obtained with the return loss |S11| below -10 dB. In addition, stable radiation patterns are observed over the entire operating band.
Zuping Qian - One of the best experts on this subject based on the ideXlab platform.
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design of low profile metamaterial loaded substrate integrated waveguide Horn Antenna and its array applications
IEEE Transactions on Antennas and Propagation, 2017Co-Authors: Yang Cai, Yingsong Zhang, Liu Yang, Yufan Cao, Zuping QianAbstract:A metamaterial-loaded substrate integrated wave-guide (SIW) Horn Antenna and its array application are researched in this communication. The mushroom-type metamaterial is placed in front of SIW Horn aperture, and much improvement in impedance matching is achieved on a 1/ $20~\lambda _{0}$ -thickness substrate. Due to the backward wave generated by the metamaterial, backward endfire radiation pattern is observed for the proposed Antenna. Experimental results indicate that a fractional impedance bandwidth of 10.6% is obtained for a fabricated prototype. Furthermore, a shunt four-element array and a monopulse four-element array are designed based on the novel SIW Horn element to further enhance the radiation performance. Results show that performances of wide operating bandwidth, low profile, and backward endfire radiation pattern are maintained for the designed two arrays.
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compact wideband dual circularly polarized substrate integrated waveguide Horn Antenna
IEEE Transactions on Antennas and Propagation, 2016Co-Authors: Yang Cai, Zuping Qian, Wenquan Cao, Yingsong Zhang, Shujie ShiAbstract:In this communication, a compact circularly polarized (CP) substrate integrated waveguide (SIW) Horn Antenna is proposed and investigated. Through etching a sloping slot on the common broad wall of two SIWs, mode coupling is generated between the top and down SIWs, and thus, a new field component as TE01 mode is produced. During the coupling process along the sloping slot, the difference in guide wavelengths of the two orthogonal modes also brings a phase shift between the two modes, which provides a possibility for radiating the CP wave. Moreover, the two different ports will generate the electric field components of TE01 mode with the opposite direction, which indicates the compact SIW Horn Antenna with a dual CP property can be realized as well. Measured results indicate that the proposed Antenna operates with a wide 3-dB axial ratio bandwidth of 11.8% ranging from 17.6 to 19.8 GHz. The measured results are in good accordance with the simulated ones.
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design of compact air vias perforated siw Horn Antenna with partially detached broad walls
IEEE Transactions on Antennas and Propagation, 2016Co-Authors: Yang Cai, Zuping Qian, Wenquan Cao, Yingsong Zhang, Lei WangAbstract:A novel substrate-integrated waveguide (SIW) Horn Antenna with partially detached broad walls is designed and analyzed. The conventional SIW Horn Antenna suffers from narrow-operating bandwidth, which mainly results from the mismatch at the Horn aperture between the substrate and the free space. However, the detachment of the broad walls makes the left substrate not only act as wave-guiding structure but also impedance transformer, which brings much size reduction in comparison with conventional SIW Horn Antenna. Moreover, the substrate with graded dielectric constants distributed in the propagating direction is realized through perforating air-vias with different diameters to further improve the radiation performance. Results indicate that the proposed Antenna operates from 17.7 to 26.7 GHz with a nearly constant peak-radiating gain between 8 and 9 dBi at end-fire direction. Stable end-fire radiation patterns can be realized in the whole operating band. Above all, the proposed technology makes it compact to design SIW Horn Antenna of high performance without extra extension after the aperture of the radiating Horn.
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compact wideband siw Horn Antenna fed by elevated cpw structure
IEEE Transactions on Antennas and Propagation, 2015Co-Authors: Yang Cai, Zuping Qian, Wenquan Cao, Yingsong Zhang, Jun Jin, Liu Yang, Nan JingAbstract:This communication presents a compact substrate-integrated waveguide (SIW) H-plane Horn Antenna fed by a novel elevated coplanar waveguide (ECPW) structure. First, the wideband characteristic of the SIW Horn Antenna is achieved through loading a dielectric slab with gradually decreasing dielectric constants, which can be realized through simply perforating different air vias on the extended slab. Second, in order to sustain an efficient feeding for the relatively thick substrate ( $0.27 {\lambda}_{0}$ ), an additional metal ground is inserted in the middle of the grounded coplanar waveguide (GCPW). Moreover, a triangular-shaped transition structure is placed at the end of the ECPW to smoothly transmit the energy from the thin ECPW to the thick SIW Horn Antenna. Finally, a prototype is fabricated to validate the proposed concept. Measured results indicate that the proposed Horn Antenna operates from 17.4 to 24 GHz. Stable radiation patterns can be observed in the whole operating band. The measured results show good accordance with the simulated ones. Above all, the proposed Antenna occupies an area of $22 \times 56.5 \times 4\;{\text{mm}}^{3}$ ( $1.47{\lambda}_{0} \times 3.77 {\lambda}_{0} \times 0.27{\lambda}_{0}$ ), which is much more compact than the previous rectangular waveguide-fed Horn Antenna ( $2.33{\lambda}_{0} \times 9.21{\lambda}_{0} \times 0.31{\lambda}_{0}$ ) (where ${\lambda}_{0}$ is the wavelength at 20 GHz in the free space).
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bandwidth enhancement of siw Horn Antenna loaded with air via perforated dielectric slab
IEEE Antennas and Wireless Propagation Letters, 2014Co-Authors: Yang Cai, Zuping Qian, Yingsong Zhang, Jun Jin, Wenquan CaoAbstract:A substrate integrated waveguide (SIW) Horn Antenna loaded with air-via perforated dielectric slab for bandwidth enhancement is proposed in this letter. The narrow impedance bandwidth of the planar Horn Antenna is mainly resulting from the discontinuity between the substrate and air. By simply drilling air-vias with different diameters in the substrate extended from the Horn aperture, a smooth transition from substrate to air can be achieved, which can enhance the impedance bandwidth of the Antenna in much degree. Measured results show that the enhanced impedance bandwidth of 40% from 16 to 24 GHz is obtained with the return loss |S11| below -10 dB. In addition, stable radiation patterns are observed over the entire operating band.
Yingsong Zhang - One of the best experts on this subject based on the ideXlab platform.
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design of low profile metamaterial loaded substrate integrated waveguide Horn Antenna and its array applications
IEEE Transactions on Antennas and Propagation, 2017Co-Authors: Yang Cai, Yingsong Zhang, Liu Yang, Yufan Cao, Zuping QianAbstract:A metamaterial-loaded substrate integrated wave-guide (SIW) Horn Antenna and its array application are researched in this communication. The mushroom-type metamaterial is placed in front of SIW Horn aperture, and much improvement in impedance matching is achieved on a 1/ $20~\lambda _{0}$ -thickness substrate. Due to the backward wave generated by the metamaterial, backward endfire radiation pattern is observed for the proposed Antenna. Experimental results indicate that a fractional impedance bandwidth of 10.6% is obtained for a fabricated prototype. Furthermore, a shunt four-element array and a monopulse four-element array are designed based on the novel SIW Horn element to further enhance the radiation performance. Results show that performances of wide operating bandwidth, low profile, and backward endfire radiation pattern are maintained for the designed two arrays.
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compact wideband dual circularly polarized substrate integrated waveguide Horn Antenna
IEEE Transactions on Antennas and Propagation, 2016Co-Authors: Yang Cai, Zuping Qian, Wenquan Cao, Yingsong Zhang, Shujie ShiAbstract:In this communication, a compact circularly polarized (CP) substrate integrated waveguide (SIW) Horn Antenna is proposed and investigated. Through etching a sloping slot on the common broad wall of two SIWs, mode coupling is generated between the top and down SIWs, and thus, a new field component as TE01 mode is produced. During the coupling process along the sloping slot, the difference in guide wavelengths of the two orthogonal modes also brings a phase shift between the two modes, which provides a possibility for radiating the CP wave. Moreover, the two different ports will generate the electric field components of TE01 mode with the opposite direction, which indicates the compact SIW Horn Antenna with a dual CP property can be realized as well. Measured results indicate that the proposed Antenna operates with a wide 3-dB axial ratio bandwidth of 11.8% ranging from 17.6 to 19.8 GHz. The measured results are in good accordance with the simulated ones.
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design of compact air vias perforated siw Horn Antenna with partially detached broad walls
IEEE Transactions on Antennas and Propagation, 2016Co-Authors: Yang Cai, Zuping Qian, Wenquan Cao, Yingsong Zhang, Lei WangAbstract:A novel substrate-integrated waveguide (SIW) Horn Antenna with partially detached broad walls is designed and analyzed. The conventional SIW Horn Antenna suffers from narrow-operating bandwidth, which mainly results from the mismatch at the Horn aperture between the substrate and the free space. However, the detachment of the broad walls makes the left substrate not only act as wave-guiding structure but also impedance transformer, which brings much size reduction in comparison with conventional SIW Horn Antenna. Moreover, the substrate with graded dielectric constants distributed in the propagating direction is realized through perforating air-vias with different diameters to further improve the radiation performance. Results indicate that the proposed Antenna operates from 17.7 to 26.7 GHz with a nearly constant peak-radiating gain between 8 and 9 dBi at end-fire direction. Stable end-fire radiation patterns can be realized in the whole operating band. Above all, the proposed technology makes it compact to design SIW Horn Antenna of high performance without extra extension after the aperture of the radiating Horn.
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compact wideband siw Horn Antenna fed by elevated cpw structure
IEEE Transactions on Antennas and Propagation, 2015Co-Authors: Yang Cai, Zuping Qian, Wenquan Cao, Yingsong Zhang, Jun Jin, Liu Yang, Nan JingAbstract:This communication presents a compact substrate-integrated waveguide (SIW) H-plane Horn Antenna fed by a novel elevated coplanar waveguide (ECPW) structure. First, the wideband characteristic of the SIW Horn Antenna is achieved through loading a dielectric slab with gradually decreasing dielectric constants, which can be realized through simply perforating different air vias on the extended slab. Second, in order to sustain an efficient feeding for the relatively thick substrate ( $0.27 {\lambda}_{0}$ ), an additional metal ground is inserted in the middle of the grounded coplanar waveguide (GCPW). Moreover, a triangular-shaped transition structure is placed at the end of the ECPW to smoothly transmit the energy from the thin ECPW to the thick SIW Horn Antenna. Finally, a prototype is fabricated to validate the proposed concept. Measured results indicate that the proposed Horn Antenna operates from 17.4 to 24 GHz. Stable radiation patterns can be observed in the whole operating band. The measured results show good accordance with the simulated ones. Above all, the proposed Antenna occupies an area of $22 \times 56.5 \times 4\;{\text{mm}}^{3}$ ( $1.47{\lambda}_{0} \times 3.77 {\lambda}_{0} \times 0.27{\lambda}_{0}$ ), which is much more compact than the previous rectangular waveguide-fed Horn Antenna ( $2.33{\lambda}_{0} \times 9.21{\lambda}_{0} \times 0.31{\lambda}_{0}$ ) (where ${\lambda}_{0}$ is the wavelength at 20 GHz in the free space).
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bandwidth enhancement of siw Horn Antenna loaded with air via perforated dielectric slab
IEEE Antennas and Wireless Propagation Letters, 2014Co-Authors: Yang Cai, Zuping Qian, Yingsong Zhang, Jun Jin, Wenquan CaoAbstract:A substrate integrated waveguide (SIW) Horn Antenna loaded with air-via perforated dielectric slab for bandwidth enhancement is proposed in this letter. The narrow impedance bandwidth of the planar Horn Antenna is mainly resulting from the discontinuity between the substrate and air. By simply drilling air-vias with different diameters in the substrate extended from the Horn aperture, a smooth transition from substrate to air can be achieved, which can enhance the impedance bandwidth of the Antenna in much degree. Measured results show that the enhanced impedance bandwidth of 40% from 16 to 24 GHz is obtained with the return loss |S11| below -10 dB. In addition, stable radiation patterns are observed over the entire operating band.
Ahmed A Kishk - One of the best experts on this subject based on the ideXlab platform.
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millimeter wave substrate integrated dual level gap waveguide Horn Antenna
IEEE Transactions on Antennas and Propagation, 2017Co-Authors: Nima Bayatmakou, Ahmed A KishkAbstract:Substrate integrated H-plane Horn Antenna design is introduced based on elevated substrate integrated gap waveguide (E-SIGW) configuration. The E-SIGW topology allows designing the Horn from two substrates of different thicknesses. A thin substrate for the feed line to eliminate the radiation losses and a thicker one for the radiating aperture. The proposed configuration allows the H-plane Horn aperture to be three times thicker than the feed line substrate, which is not possible with the conventional substrate integrated waveguide technology. The transition between the Horn layers enhances the matching bandwidth without any aperture modification. The outer surface of the Horn around its aperture is loaded with soft surfaces realized by transverse strips. As a result, more symmetric fan beam radiation patterns with suppressed back lobes are achieved.
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substrate integrated Horn Antenna with uniform aperture distribution
IEEE Transactions on Antennas and Propagation, 2017Co-Authors: Nima Bayatmakou, Ahmed A KishkAbstract:A new substrate integrated Horn Antenna with hard side walls combined with a couple of soft surfaces is introduced. The Horn takes advantage of the air medium for propagation inside, while having a thickness of dielectric on the walls to realize hard conditions. The covering layers of the air-filled Horn are equipped with strip-via arrays, which act as soft surfaces around the Horn aperture to reduce the back radiations. The uniform amplitude distribution of the aperture resulting from the hard conditions and the phase correction combined with the profiled Horn walls provided a narrow beamwidth and -13 dB sidelobe levels in the frequency of the hard condition, which is validated by the simulated and measured results.
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substrate integrated Horn Antenna loaded with open parallel transitions
IEEE Antennas and Wireless Propagation Letters, 2017Co-Authors: Nima Bayatmakou, Milad Sharifi Sorkherizi, Ahmed A KishkAbstract:The substrate integrated H-plane Horn Antenna has been struggling with very limited impedance bandwidth since its invention, which is coming from its natural aperture discontinuity. Apart from a variety of series transitions introduced so far, here, parallel transitions are applied to the Antenna aperture in addition to narrow slots on the Horn walls around the aperture to widen the Antenna impedance bandwidth. It is shown that the depth of the transitions can easily determine the center frequency of the matching bandwidth. The new parallel transitions also reduce the Antenna back radiation since they act as chokes around the Horn aperture.