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.
13 citations
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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.
11 citations
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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.
9 citations
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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.
6 citations
Cites background from "Design of broadband power divider b..."
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TL;DR: In this article, a simple design technique to implement the unequal power division while maintaining a broad bandwidth is achieved only by changing the length of the step in the coupling region and H-plane matching step at the input while keeping all other dimensions same.
Abstract: In this paper, design of Substrate Integrated Waveguide (SIW) broadband unequal power divider is presented A simple design technique to implement the unequal power division while maintaining a broad bandwidth is achieved only by changing the length of the step in the coupling region and H-plane matching step at the input while keeping all other dimensions same A set of design curves are also presented to extend the proposed design technique to a large range of unequal power division Two fabricated prototype of 1:4 and 1:8 power divider are presented which operate throughout the X band (8–12 GHz)
3 citations
Cites methods from "Design of broadband power divider b..."
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References
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TL;DR: In this article, a numerical multimode calibration procedure is proposed and developed with a commercial software package on the basis of a full-wave finite-element method for the accurate extraction of complex propagation constants of the SIW structure.
Abstract: The substrate integrated waveguide (SIW) technique makes it possible that a complete circuit including planar circuitry, transitions, and rectangular waveguides are fabricated in planar form using a standard printed circuit board or other planar processing techniques. In this paper, guided wave and modes characteristics of such an SIW periodic structure are studied in detail for the first time. A numerical multimode calibration procedure is proposed and developed with a commercial software package on the basis of a full-wave finite-element method for the accurate extraction of complex propagation constants of the SIW structure. Two different lengths of the SIW are numerically simulated under multimode excitation. By means of our proposed technique, the complex propagation constant of each SIW mode can accurately be extracted and the electromagnetic bandstop phenomena of periodic structures are also investigated. Experiments are made to validate our proposed technique. Simple design rules are provided and discussed.
1,191 citations
"Design of broadband power divider b..." refers background in this paper
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TL;DR: Current state-of-the-art of circuit design and implementation platforms based on this new concept are reviewed and discussed in detail and future research and development trends are discussed with reference to low-cost innovative design of millimeter-wave and optoelectronic integrated circuits.
Abstract: A new generation of high-frequency integrated circuits is presented, which is called substrate integrated circuits (SICs). Current state-of-the-art of circuit design and implementation platforms based on this new concept are reviewed and discussed in detail. Different possibilities and numerous advantages of the SICs are shown for microwave, millimeter-wave and optoelectronics applications. Practical examples are illustrated with theoretical and experimental results for substrate integrated waveguide (SIW), substrate integrated slab waveguide (SISW) and substrate integrated nonradiating dielectric (SINRD) guide circuits. Future research and development trends are also discussed with reference to low-cost innovative design of millimeter-wave and optoelectronic integrated circuits.
605 citations
"Design of broadband power divider b..." refers background in this paper
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TL;DR: In this paper, two classes of substrate integrated waveguide (SIW) power divider are presented, namely, Y- and T-types, using arrays of via, the SIW power dividers and microstrip transitions are integrated on the same substrate.
Abstract: Two classes of substrate integrated waveguide (SIW) power divider are presented, namely, Y- and T-types. Using arrays of via, the SIW power dividers and microstrip transitions are integrated on the same substrate. Design models are presented respectively for the Y- and T-junctions. Experimental results over the Ka band are given for both structures. The Y-junction shows a bandwidth of 25.2% at -18.5 dB while the T-junction shows a bandwidth of 10.2% at -19.0 dB.
180 citations
"Design of broadband power divider b..." refers background in this paper
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TL;DR: In this article, a planar integrated multi-way broadband SIW power divider is proposed, which can be combined by the fundamental modules of T-type or Y-type two-way power dividers and an SIW bend directly.
Abstract: A planar integrated multi-way broadband SIW power divider is proposed. It can be combined by the fundamental modules of T-type or Y-type two-way power dividers and an SIW bend directly. A sixteen way SIW power divider prototype was designed, fabricated and measured. The whole structure is made by various metallic-vias on the same substrate. Hence, it can be easily fabricated and conveniently integrated into microwave and millimeter-wave integrated circuits for mass production with low cost and small size.
102 citations
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