Design of Substrate Integrated Coaxial Line (SICL) fed dipole antenna for K band application
01 Dec 2017-
TL;DR: In this article, the authors proposed a substrate Integrated Coaxial Line (SICL) fed printed dipole antenna for the Ka band application with a broad bandwidth of 2.37 GHz.
Abstract: In this paper, design of Substrate Integrated Coaxial Line (SICL) fed printed dipole antenna for Ka band application is demonstrated. The proposed antenna efficiently utilizes the out of phase surface current in the central and outer conductor of the SICL to excite the dipole antenna. The use of SICL removes the need of using balun to feed the dipole antenna and makes the feeding network simpler. The metal plate at the top layer acts as reflector for the dipole antenna which helps to enhance the gain of the antenna upto 5.38 dBi with a broad bandwidth of 2.37 GHz. The antenna is implemented in low profile planar substrate making it suitable for practical application in Ka band.
Citations
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01 Nov 2018
TL;DR: In this paper, a dual-band substrate integrated coaxial line (SICL) balun operating at 6 GHz and 28 GHz for 5G application is demonstrated using open-ended coaxial stubs with shielding.
Abstract: This paper demonstrates the design of a dual-band substrate integrated coaxial line (SICL) balun operating at 6 GHz and 28 GHz for 5G application. The proposed design is realized using open-ended coaxial stubs with shielding. The performance of the dual-band SICL configuration is analyzed and range of realizable frequency ratios is determined from the analytically derived equations. The designed SICL based balun demonstrates low amplitude and phase imbalance in both the desired bands with good inter-band suppression making it worthy for practical applications. A fractional bandwidth of 17.6% and 3.97% at 6 GHz and 28 GHz band respectively is achieved by the proposed balun covering $0.43\lambda_{g}\times 0.68\lambda_{9}$ circuit area. The electromagnetic robustness and wide-band single mode TEM characteristics of the proposed SICL based dual-band balun makes it a befitting option to deploy in millimeter-wave range.
5 citations
Cites methods from "Design of Substrate Integrated Coax..."
...The out of phase signals propagating in the top and middle layer of SICL has been utilized in [8] to excite a dipole antenna....
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01 Dec 2018
TL;DR: A broadband dipole antenna fed by the Substrate Integrated Coaxial Line (SICL) to work in Local Multipoint Distributed System (LMDS) band is presented in this paper.
Abstract: A broadband dipole antenna fed by the Substrate Integrated Coaxial Line (SICL) to work in Local Multipoint Distributed System (LMDS) band is presented in this paper. The feeding network consist of SICL which holds the advantage of eliminating the complex network of balun and reflector in conventional microstrip based feeding designs of planar antennas. The proposed design utilises parasitic dipole in addition to the primary dipole antenna to enhance bandwidth. This antenna exhibits gain varying from 7.2dBi to 8dBi and 19% impedance bandwidth within the range of 25.7GHz to 31.2GHz. This antenna finds its application in LMDS (26GHz-29GHz) systems and millimetre wave applications.
4 citations
Cites background from "Design of Substrate Integrated Coax..."
...The feeding networks for the antenna in planar microstrip technology suffers from spurious radiations and exhibits low efficiency because of dielectric and conductor losses at millimetre wave frequencies [1]....
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...The dimensions of the SICL transmission line that feeds the antenna section is chosen to keep the characteristic impedance 50Ω [1]....
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01 Nov 2018
TL;DR: In this paper, the authors present inline transitions from substrate integrated coaxial line (SICL) to microstrip line, coplanar waveguide (CPW), as well as substrate integrated waveguide(SIW).
Abstract: This paper presents inline transitions from substrate integrated coaxial line (SICL) to microstrip line, coplanar waveguide (CPW), as well as substrate integrated waveguide (SIW). A common property is the conversion of transmission medium from double to single substrate layer of PCB. The first two of described transitions can be used from DC up to the presence of higher order modes if the characteristic impedances of two meeting transmission lines are matched. The transition to substrate integrated waveguide is of higher complexity, yet compact. Both sides of the SICL-SIW transition are strongly coupled to resonant cavity, and return loss greater than 20 dB is achieved in fractional bandwidth of 10.91 %. Improvements compared to the existing solutions have been made in designs of all three transitions.
3 citations
Additional excerpts
...feedings of versatile planar antennas [10]-[13]....
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Patent•
06 Jul 2018
TL;DR: In this paper, a planar dipole antenna with low inhibition characteristic is designed via the band shaped line form, low-loss conversion integration between the band shape and the substrate integrated waveguide is realized successfully, and a basis is provided for improving the low-frequency filtering characteristic of the radar in the front end.
Abstract: The invention relates to a planar dipole antenna with a low inhibition characteristic, and mainly aims at improving the anti-interference and electromagnetic compatibility performances of a radar. Theantenna comprises a planar radiation unit, a band shaped line and SIW conversion unit and a double-layer common-ground substrate integrated waveguide. The planar radiation unit uses a dipole antennabased on a band shaped line form; the double-layer common-ground substrate integrated waveguide is composed of two substrate integrated waveguide layers which share the intermediate metal ground; anda central conductor of the planar radiation unit is connected to the intermediate metal ground via the band shaped line and SIW conversion unit and the double-layer common-ground substrate integratedwaveguide, impedance match between the band shape and the substrate integrated waveguide is realized, and the planar radiation unit includes the low inhibition characteristic of the substrate integrated waveguide. The planar dipole antenna with the low inhibition characteristic is designed via the band shaped line form, low-loss conversion integration between the band shaped line and the substrateintegrated waveguide is realized successfully, and a basis is provided for improving the low-frequency filtering characteristic of the radar in the front end.
3 citations
DOI•
TL;DR: In this paper , a novel printed dipole antenna is proposed with gain enhancement by using the newly emerging substrate-integrated double line (SIDL) technology for potential 5G millimeter-wave (mmWave) applications.
Abstract: In the present paper, a novel printed dipole antenna is proposed with gain enhancement by using the newly emerging substrate-integrated double line (SIDL) technology for potential 5G millimeter-wave (mmWave) applications. As a three-wire transmission line, the SIDL incorporates two parallel inner strips and one grounded outer conductor. The inner strip pair protrudes and is bent bilaterally to form the dipole’s arms. The outer conductor is stretched out and spilt into four strips in a fourfold symmetry along the longitudinal axis to boost the gain. A bilateral slotline technology is used to couple the energy from the feed to the SIDL structure, providing a broadband transition. The shaped SIDL and the transition contribute to the proposed dipole element and then are expanded to a 1×2 array, both of which are designed and fabricated by using the standard PCB process. The measurement discloses that the element has an actual -10-dB impedance bandwidth from 33.5~47.4 GHz (34.4%@40.4 GHz) with a practical peak gain of 7.00 dBi, which for the array are 32.0~45.1 GHz (34.0%@38.6 GHz) and 8.88 dBi, respectively. Good agreement between the simulated and experimental results demonstrates the feasibility of SIDL’s utilization in designing printed dipole antenna for high-gain and wideband mmWave applications.
2 citations
References
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TL;DR: In this article, a dual band substrate integrated waveguide (SIW) cavity backed planar slot antenna is presented, which uses a combination of multiple SIW cavities of different size connected through coupling window in the common sidewall of the cavities.
Abstract: A novel design technique to implement dual band substrate integrated waveguide (SIW) cavity backed planar slot antenna is presented. The proposed antenna uses a combination of multiple SIW cavities of different size connected through coupling window in the common sidewall of the cavities. The cavities are loaded with long bow tie shaped slots to achieve higher bandwidth of the antenna. The placement of long bow tie slots helps to generate multiple hybrid modes which can be tuned by varying slot dimensions. First, two SIW cavities loaded with bow-tie slots are used to excite four closely placed hybrid modes in X band (8-12 GHz) to realise dual band response with a bandwidth of 600 MHz (7.2%) and 888 MHz (8.74%) and a gain of 5.3 and 4.4 dBi, respectively. The design is further extended using a set of four SIW cavities arranged as two pair of coupled SIW cavities along with bow-tie slots and placed in orthogonal orientation to implement dual band dual polarised slot antenna while maintaining its planar configuration. The proposed antenna exhibits a bandwidth of 390 MHz (3.9%) and 790 MHz (7.29%) with a gain of 6.1 and 5.4 dBi, respectively.
38 citations
"Design of Substrate Integrated Coax..." refers background in this paper
...Recently a planar version of conventional waveguide technology named substrate integrated waveguide (SIW) has emerged as an alternative for implementing circuits at these frequencies [4]....
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