Design of broadband power divider based on Substrate-Integrated Waveguide technology
01 Dec 2013-pp 1-2
TL;DR: Design principles for implementation of broadband T-type and Y-type power divider based on Substrate-Integrated Waveguide (SIW) technology has been presented and different design curves have been developed based on simulation results.
Abstract: In this paper, design principles for implementation of broadband T-type and Y-type power divider based on Substrate-Integrated Waveguide (SIW) technology has been presented. Different design curves have been developed based on simulation results and are used to implement 1×2 power dividers of Y-type and T-type. Finally, by cascading T-type and Y-type stages a 1×4 Power divider of equal division is designed and simulated. The proposed design shows a broad bandwidth (−20 dB) of 18.3% and insertion-loss Bandwidth (1%) of 17.86%.
Citations
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TL;DR: In this article, a leaky-wave antenna (LWA) is proposed for larger radiation coverage by frequency beam scanning in the X-band, where the SIW-based power divider, the directional coupler, and the 180° power splitter are used in the design.
Abstract: A novel polarization diverse substrate integrated waveguide (SIW)-based leaky-wave antenna (LWA) is proposed for larger radiation coverage by frequency beam scanning in X-band. For feeding purpose, the SIW-based power divider, the directional coupler, and the 180° power splitter are used in the design. For radiation, +45°/−45° tilted slots are etched on top and bottom faces of the structure such that the radiated quad beam scans all the four quadrants. By varying the means of excitation at two input ports, multiple polarization states are realized. The antenna shows ±45° dual polarization (+45° and −45° are co-existing), horizontal and vertical polarization, and two types of circular dual-polarization (left handed and right handed simultaneously). The proposed antenna is capable of scanning in each of the four quadrants simultaneously with the scanning range of 62° having the maximum gain of 12.6 dBi and an improved cross-polarization level better than −20 dB. The quad beam covers overall scanning range of 248° with different polarization states. The S-parameters, radiation patterns, gain, and axial ratio are calculated and demonstrated. The proposed LWA shows desirable advantages, such as simultaneous four-quadrant frequency beam scanning having polarization diversity capabilities, which leads to a flexible design for practical utilization.
23 citations
04 Nov 2015
TL;DR: In this article, a planar magic-T using H-plane folded substrate integrated waveguide (FSIW) and E-plane substrate SIW power dividers without narrowband slotline-to-SIW transition is proposed.
Abstract: In this paper, a novel planar magic-T using H-plane folded substrate integrated waveguide (FSIW) and E-plane substrate integrated waveguide (SIW) power dividers without narrowband slotline-to-SIW transition is proposed. Due to the symmetrical field in the FSIW, two equal in-phase outputs are achieved. The signal applied to the difference SIW port, is split by the middle metal ground into two out-of-phase signals. And a novel way to excite folded substrate integrated waveguide (FSIW) is utilized in order to obtain a broader bandwidth in the proposed magic-T. If the edge of the middle metal layer is designed properly, the bandwidth will be further extended. From 6.65GHz to 9.73GHz (fractional bandwidth 37.6%), the return loss is below −15dB and the amplitude and phase imbalances are less than 0.1dB and 1o, respectively. The measured results are in good agreement with the simulated results.
12 citations
01 Jun 2015
TL;DR: In this paper, the authors compared the performance of two-and four-elements SIW-based leaky-wave array antennas and their performance was compared with a 1×4 cascaded SIW power divider with effective matching port.
Abstract: In this paper, 2-elements and 4-elements substrate integrated waveguide (SIW) based leaky-wave array antennas are presented and their performances are compared. The enhanced gain and scan angles for 2-elements are 15.4 dBi and 45° respectively and for 4-elements the same is 18.4 dBi and 30° respectively. In the final design of 4-elements array antenna, sinusoidal variation of slot length is used to reduce the side lobe level (SLL). A 1×4 cascaded SIW power divider with effective matching port is used to feed the antenna. Simulations of the antennas are carried out using HFSS software and presented here.
11 citations
20 Jul 2016
TL;DR: In this article, a novel design of W-band power divider using E-faced-folded waveguide magic-T junction to realize the miniaturization is proposed.
Abstract: A novel design of W-band power divider using E-faced-folded waveguide magic-T junction to realize the miniaturization is proposed in this paper. A stepped regular triangular prism and the stepped impedance transformer are utilized in order to obtain excellent performance. Besides, the performance of the E-faced-folded magic-T power divider is also improved by using short planes. The measured results show that the insertion loss of the power divider is better than 0.6dB and the return loss is better than 15dB. The measured average E-H isolation is better than 30dB from 92GHz to 100GHz range.
9 citations
Cites background from "Design of broadband power divider b..."
...In the process of model simulation, the side length and the height of the two regular triangular prisms strongly influence the matching results....
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TL;DR: In this paper, the design of a planar slot array in groove gap waveguide technology implemented by glide-symmetric holes as Electromagnetic Band Gap structure is presented.
Abstract: The design of a planar slot array in groove gap waveguide technology implemented by glide-symmetric holes as Electromagnetic Band Gap structure is here presented. Despite the advantages of using holes instead of pins in terms of manufacturing simplicity and cost,the larger size of the holes compared to pins needs to be considered when designing slot arrays without grating lobes. A 1 to 4 corporate feed network is designed using this technology as well. Corrugations are included to further reduce the grating lobes. Experimental results support the viability of the proposed concept for designing glide-symmetric planar arrays of any size.
5 citations
References
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06 Nov 2012
TL;DR: This paper presents a broadband four way substrate integrated waveguide power divider with simple and planar feed structure that has a wide impedance bandwidth of 40% and variation of output level over the entire pass band is less than ±0.5 dB.
Abstract: This paper presents a broadband four way substrate integrated waveguide power divider with simple and planar feed structure. The proposed power divider has a wide impedance bandwidth of 40% from 4.5GHz to 6.8 GHz. Variation of output level for all output ports and over the entire pass band of the power divider is less than ±0.5 dB.
10 citations
"Design of broadband power divider b..." refers background in this paper
...SIW power dividers are easily fabricated with planar micro-strip components through microstrip transitions [4-5]....
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