Miniaturized Broadband Coupler Made of Slow-Wave Half-Mode Substrate Integrated Waveguide

Jin, Haiyan; Zhou, Yuliang; Huang, Yong Mao; Ding, Shuai; Wu, Ke

doi:10.1109/lmwc.2016.2646915

Cited by 39 publications

(16 citation statements)

References 15 publications

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“…In the numerical experiments of Section 3, we use D = 0.5 mm. Note that the overall cost of solving (11) and (12) is only n EM analyses of the coupler, which corresponds to the cost of estimating the Jacobian J F in (10).…”

Section: Yield Optimization Using Performance-driven Surrogatesmentioning

confidence: 99%

“…It is especially critical for miniaturized microwave components, where considerable cross-coupling effects cannot be adequately accounted for by simpler methods, for example, network equivalents. 10,11 The literature offers several major approached aiming at mitigation of the aforementioned difficulties. One of the simplest is worst-case analysis, 12 which assumes the most disadvantageous scenarios (eg, combinations of maximum parameter deviations from their nominal values).…”

Section: Introductionmentioning

confidence: 99%

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Rapidtolerance‐awaredesign of miniaturized microwave passives by means ofconfined‐domainsurrogates

Pietrenko‐Dabrowska

2020

Int J Numerical Modelling

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The effects of uncertainties, primarily manufacturing tolerances but also incomplete information about operating conditions or material parameters, can be detrimental to the performance of microwave components. Quantification of such effects is essential to ensure a meaningful evaluation of the structure, in particular, its reliability under imperfect fabrication procedures. The improvement of the circuit robustness can be achieved by reducing sensitivity to geometry/material parameter deviations, which requires optimization of suitably chosen statistical performance metrics such as the yield. The prerequisite for the latter is statistical analysis. In the case of compact circuits, it is executed through full-wave electromagnetic (EM) analysis. The fundamental difficulty, that is, the high CPU cost, can be alleviated by the employment of fast surrogate models, which is the method of choice for the majority of contemporary approaches. Despite its advantages, a practical challenge of surrogate-assisted design is the initial computational overhead related to metamodel construction. As a workaround, this work proposes the employment of a recently introduced concept of constrained modelling, where the surrogate domain is confined only to contain the essential subsets of the parameter space. In the context of yield optimization, the domain needs to correspond to directions featuring maximum variability of the circuit responses (particularly the parts thereof that affect the yield value in the most significant way) with respect to its geometry parameters. The small volume of the domain spanned by such directions permits setting up an accurate model using a fraction of training data samples required by conventional methods. The proposed technique is demonstrated using a miniaturized microstrip rat-race coupler with its yield optimized at the cost of just a few dozen of EM simulations of the circuit. EM-based Monte Carlo simulations corroborate the reliability of the approach.

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Section: Yield Optimization Using Performance-driven Surrogatesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rapidtolerance‐awaredesign of miniaturized microwave passives by means ofconfined‐domainsurrogates

Pietrenko‐Dabrowska

2020

Int J Numerical Modelling

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“…Hence, the design of compact sub-6G filters is a hot research topic for mobile portable devices. Substrate integrated waveguide (SIW) is widely used in RF passive device designs due to low loss, low cost, and flexibility of integration properties, such as filter [1][2][3][4][5][6], antenna [7][8][9][10][11], phase shifter [12][13][14][15][16], power divider [17][18][19][20][21], and coupler [22][23][24][25][26]. However, SIW filters under 6 GHz is still outsize to meet the requirement of portable communication devices because of the long wavelength.…”

Section: Introductionmentioning

confidence: 99%

Design of a Compact 5.7-5.9 GHZ Filter Based on CRLH Resonator Units

Hu¹,

Gao²,

Xinlei³

et al. 2020

PIER Letters

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A compact substrate integrated waveguide (SIW) filter based on composite right/lefthanded (CRLH) resonator units is implemented in this paper. The filter is composed of two CRLH resonator units serially connected by a SIW transmission line unit. The structure of the filter and equivalent circuit transmission behavior are analyzed, and a novel design method by optimizing the length and width of the interdigital metal slots to decrease the filter operation frequency is proposed. To further demonstrate the design theory and performance of the proposed filter, the filter was designed and fabricated on an RT6010 dielectric material. The measurement results show that the proposed filter works at a center frequency of 5.8 GHz with 200 MHz bandwidth The insertion loss is 2.3 dB, and the filter size is only 10 mm × 7.4 mm.

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“…Due to the need to meet the small size requirement of sub-6G portable devices, compact sub-6G filter design has become a hot research topic in recent years. Substrate integrated waveguides (SIWs) are widely used in RF (Radio Frequency) passive device designs due to their low loss and low cost and the flexibility of their integration properties, such as their filter [1][2][3][4][5][6], antenna [7][8][9], phase shifter [10][11][12][13][14], power divider [15][16][17][18], coupler [19][20][21][22], etc. However, SIW filters under 6 GHz are still too large to meet the requirement of portable communication devices because of their long wavelength.…”

Section: Introductionmentioning

confidence: 99%

A Compact 3.3–3.5 GHz Filter Based on Modified Composite Right-/Left-Handed Resonator Units

Zheng

et al. 2019

Electronics

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In the RF (Radio Frequency) front-end of a communication system, bandpass filters (BPFs) are used to send passband signals and reject stopband signals. Substrate-integrated waveguides (SIW) are widely used in RF filter designs due to their low loss and low cost and the flexibility of their integration properties. However, SIW filters under 6 GHz are still too large to meet the requirement of portable communication devices due to their long wavelength. In this paper, a very compact fully integrated SIW filter is proposed and designed with RT6010 dielectric material to meet the small size requirement of portable devices for next-generation sub-6 G applications. The proposed filter contains two sawtooth-shaped composite right-/left-handed (CRLH) resonator units, instead of traditional rectangular-shaped CRLH resonator units, which makes the filter more compact and cost effective. The filter is designed and fabricated on an RT6010 substrate, with a size of only 10 mm × 7.4 mm. The measurement results illustrated that the proposed BPF shows a passband covering the frequency range of 3.25–3.45 GHz; the minimum passband insertion loss is only 2.4 dB; the stopband rejection is better than −20 dB throughout the frequencies below 3.0 GHz and above 3.8 GHz; S11 is as low as −37 dB at 3.35 GHz; and the group delay variation is only 1.4 ns throughout the operation bandwidth.

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Miniaturized Broadband Coupler Made of Slow-Wave Half-Mode Substrate Integrated Waveguide

Cited by 39 publications

References 15 publications

Rapidtolerance‐awaredesign of miniaturized microwave passives by means ofconfined‐domainsurrogates

Rapidtolerance‐awaredesign of miniaturized microwave passives by means ofconfined‐domainsurrogates

Design of a Compact 5.7-5.9 GHZ Filter Based on CRLH Resonator Units

A Compact 3.3–3.5 GHz Filter Based on Modified Composite Right-/Left-Handed Resonator Units

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