Modelling of composite right/left-handed transmission line based on fractal geometry with application to power divider

Xu, He‐Xiu; Wang, G.-M.; Liang, Jian‐Gang; Zhang, C.-X.; Wu, Fan

doi:10.1049/iet-map.2012.0137

Cited by 14 publications

(7 citation statements)

References 17 publications

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“…However, the size of conventional power divider based on quarter-wavelength transmission lines is quite large, especially when it operates at low frequencies. Therefore, many compact structures, such as the capacitive loading [2], electromagnetic band gap (EBG) cells [3], defected ground structure (DGS) [4], parallel coupled-lines on DGS (PCL-DGS) [5], composite right/left-handed transmission line (CRLH TL) [6], and serial inductors [7] are employed to design miniaturized power dividers with 35%-74% size reductions. A WPD with large size reduction by lumped element equivalent networks was proposed in [8] whilst the matching and isolation was not very good to satisfy system demand.…”

Section: Introductionmentioning

confidence: 99%

Novel Sub-Miniaturized Wilkinson Power Divider Based on Small Phase Delay

Miao

Yang

Gao

et al. 2014

IEEE Microw. Wireless Compon. Lett.

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In this letter, admittance matrix and arbitrary phase delay is investigated for the design of sub-miniaturized Wilkinson power divider (WPD). A theoretical model based on admittance matrix is derived and discussed to find the relationship among arbitrary phase delay, characteristic impedance and electrical length of WPD. The presented method is validated by building a modified configuration which is centered at 500 MHz with 14.18% fractional bandwidth (FBW) using both microstrip lines and lumped elements. The measured results show that the proposed WPD exhibits excellent performances, including less than 0.27 dB insertion loss, better than 26.1 return loss and greater than 39.2 dB isolation. Moreover, more than 85% size reduction is achieved, compared with conventional WPD.Index Terms-Admittance matrix, arbitrary phase delay, subminiaturized, Wilkinson power divider (WPD).

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Section: Introductionmentioning

confidence: 99%

Novel Sub-Miniaturized Wilkinson Power Divider Based on Small Phase Delay

Miao

Yang

Gao

et al. 2014

IEEE Microw. Wireless Compon. Lett.

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“…However, they are almost constant at specific frequencies or in a narrow range. Because the component values are constant in the range of 5 to 6.5 GHz in Figure 6, CL=5.09 pF, CR=8.57 pF, LR=2.57 nH, and LL=1.53 nH were selected [13,14]. To validate these component values, the dispersion diagrams obtained from the circuit model and the simulation model were compared as shown in Figure 7.…”

Section: Circuit Parameters Extraction and Dispersion Characteristicsmentioning

confidence: 99%

Analysis and design of the CRLH SICL unit cell using effective parameters

Park

Kim

2014

IEICE Electron. Express

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This article proposes a substrate integrated coaxial line (SICL) structure with composite right left handed (CRLH) characteristics. The CRLH characteristics were implemented by inserting an inter-digital capacitor (IDC) and strip line into the SICL. To verify the proposed CRLH structure, the effective parameters (ε eff , μ eff ), refractive index (n), propagation constant (β) and Bloch impedance (Z B ) were derived using the retrieved effective parameter method, from which left-handed (LH), right-handed (RH), zerothorder resonance (ZOR) characteristics were confirmed. After completing the CRLH-equivalent circuit from the effective parameters, the component values were validated by comparing the results of a simulation model and a circuit model. The simulation results agreed well with the measured results. This confirmed that the proposed SICL is a balanced CRLH SICL unit cell.

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“…In the past decade, substrate integrated waveguide (SIW) has become one of the hotspots in researches [1]. Considering its perfect high-pass transmission with low-loss, high-efficient properties, functional devices such as filter [2], power divider [3][4][5][6] and coupler [7] have been proposed. Half-mode SIW (HMSIW) consists of only half of SIW structures, while keeping the same performance as SIW [8,9].…”

Section: Introductionmentioning

confidence: 99%

Unequal Bandpass Filtering Power Divider Based on Hybrid HMSIW-SSPP Modes

Pan

Guo

et al. 2022

Front. Phys.

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This letter presents a novel unequal bandpass filtering power divider based on hybrid-mode of half mode substrate integrated waveguide (HMSIW) and spoof surface plasmon polaritons (SSPPs). Bandpass response is achieved by combining the transmission properties of HMSIW and SSPPs simultaneously. The operating bandwidth can be designed in a wide range by simply optimizing the dimensions of HMSIW and SSPPs. In addition, defected ground structures (DGSs) are etched on the bottom of the substrate to improve out-of-band suppression. The power division ratio of the proposed unequal power divider is finally optimized to 1:3. The measured results agree with the simulated one. Such design provides a stable power division within wide frequency range from 6.5 to 9.5 GHz.

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Modelling of composite right/left-handed transmission line based on fractal geometry with application to power divider

Cited by 14 publications

References 17 publications

Novel Sub-Miniaturized Wilkinson Power Divider Based on Small Phase Delay

Novel Sub-Miniaturized Wilkinson Power Divider Based on Small Phase Delay

Analysis and design of the CRLH SICL unit cell using effective parameters

Unequal Bandpass Filtering Power Divider Based on Hybrid HMSIW-SSPP Modes

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