Design of compact Wilkinson power divider and branch line coupler using hairpin based line

Kumar, Manish; Islam, Sk. Nurul; Sen, Gobinda; Parui, Susanta Kumar; Das, Santanu

doi:10.1016/j.aeue.2019.152825

Cited by 15 publications

(9 citation statements)

References 32 publications

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“…In many designs [23][24][25][26][27][28][29][30][31], resonators and filters have been used in the divider structure to suppress harmonics. Applied resonators increase the complexity of circuits, and if resonators are not used properly, they may also increase insertion loss.…”

Section: Introductionmentioning

confidence: 99%

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A Fast Surrogate Model-Based Algorithm Using Multilayer Perceptron Neural Networks for Microwave Circuit Design

et al. 2023

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This paper introduces a novel algorithm for designing a low-pass filter (LPF) and a microstrip Wilkinson power divider (WPD) using a neural network surrogate model. The proposed algorithm is applicable to various microwave devices, enhancing their performance and frequency response. Desirable output parameters can be achieved for the designed LPF and WPD by using the proposed algorithm. The proposed artificial neural network (ANN) surrogate model is employed to calculate the dimensions of the LPF and WPD, resulting in their efficient design. The LPF and WPD designs incorporate open stubs, stepped impedances, triangular-shaped resonators, and meandered lines to achieve optimal performance. The compact LPF occupies a size of only 0.15 λg × 0.081 λg, and exhibits a sharp response within the transmission band, with a sharpness parameter of approximately 185 dB/GHz. The designed WPD, operating at 1.5 GHz, exhibits outstanding harmonics suppression from 2 GHz to 20 GHz, with attenuation levels exceeding 20 dB. The WPD successfully suppresses 12 unwanted harmonics (2nd to 13th). The obtained results demonstrate that the proposed design algorithm effectively accomplishes the LPF and WPD designs, exhibiting desirable parameters such as operating frequency and high-frequency harmonics suppression. The WPD demonstrates a low insertion loss of 0.1 dB (S21 = 0.1 dB), input and output return losses exceeding 30 dB (S11 = −35 dB, S22 = −30 dB), and an output ports isolation of more than 32 dB (S23 = −32 dB), making it suitable for integration into modern communication systems.

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Section: Introductionmentioning

confidence: 99%

“…Applied resonators increase the complexity of circuits, and if resonators are not used properly, they may also increase insertion loss. In [23], a WPD with rectangular stubs and coupled line resonators is presented. The applied resonators in [23] reduced the overall size of the designed WPD.…”

Section: Introductionmentioning

confidence: 99%

A Fast Surrogate Model-Based Algorithm Using Multilayer Perceptron Neural Networks for Microwave Circuit Design

et al. 2023

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“…In many designs [2][3][4][5], low-pass filters (LPFs) are used as the coupler branches to miniaturize the structure and suppress the harmonics. This technique gives good results but increases the design complexity and the insertion loss.…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of a Compact Branch-Line Coupler Using Resonators with Wide Harmonics Suppression Band

et al. 2022

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The branch-line coupler (BLC) is an important device in radio frequency (RF) and microwave (MW) circuits. The main drawbacks of the conventional BLC are as follows: first, the four long quarter-wavelength (λ/4) transmission line sections occupy a large size, especially at the low frequencies, and second, the presence of unwanted harmonics. This research paper presents a compact 750 MHz BLC with harmonics suppression using resonators. The typical BLC consists of four λ/4 branches, two series arms of 35 Ω and two shunt arms of 50 Ω impedances. In the proposed BLC, these long branches are replaced with two types of compact resonators. The proposed resonators have the same responses at the operating frequency of 750 MHz and suppress higher frequencies. The designed BLC is simulated, fabricated and measured. The results show that the proposed BLC has good performance at 750 MHz with a bandwidth of 200 MHz, which provides more than 26% fractional bandwidth (FBW). It has a very compact size, about 84% size reduction, as compared with the typical BLC. Moreover, the fabricated BLC suppresses the 2nd up to 7th unwanted harmonics with a high suppression level.

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“…WPDs can afford severely isolated output connections (Lei et al, 2006), by inserting open stubs (Kun-Hui and Bongkoo, 2003) or setting segment quantities (Oraizi and Sharifi, 2006). Many ideas have been realized to enhance the traditional WPD's bandwidth (Lei et al, 2006;Kun-Hui and Bongkoo, 2003;Oraizi and Sharifi, 2006;Kumar et al, 2019;Jiang and Yeung, 2020;Mohamed et al, 2019;Hammad, 2019;Shaikh et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Multiple-input multiple-output antenna for dual-band applications with a novel radiating patch and enhanced feeding network

Zehforoosh

Alemi

2021

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Purpose An Elephant trunk shape (ETS) radiating element is used to achieve the two covering bands of multi-input multi-output (MIMO) antenna. These frequency bands can be controlled by the length of a slot embedded in ETS. The slot length in ETS plays a defining role in controlling the impedance bandwidth (IBW) of the MIMO antenna, and its diligent adjustment of it leads to cover the frequency range of Bluetooth and Wireless Local Area Network systems. Design/methodology/approach A new MIMO antenna is introduced in this paper in conjunction with an enhanced Wilkinson power divider feeding platform. Findings These frequency bands can be controlled by the length of a slot embedded in ETS. The slot length in ETS plays a defining role in controlling the IBW of the MIMO antenna, and its diligent adjustment leads to covering the frequency range of Bluetooth and WLAN systems. Originality/value The proposed MIMO antenna benefits from good isolation between ports for both frequency bands. The proposed MIMO antenna is constructed on FR4 substrate with a volume of 90 × 134 × 1.6 mm3.

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Design of compact Wilkinson power divider and branch line coupler using hairpin based line

Cited by 15 publications

References 32 publications

A Fast Surrogate Model-Based Algorithm Using Multilayer Perceptron Neural Networks for Microwave Circuit Design

A Fast Surrogate Model-Based Algorithm Using Multilayer Perceptron Neural Networks for Microwave Circuit Design

Design and Fabrication of a Compact Branch-Line Coupler Using Resonators with Wide Harmonics Suppression Band

Multiple-input multiple-output antenna for dual-band applications with a novel radiating patch and enhanced feeding network

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