Filtered Power Splitter Using Microstrip Square Open Loop Resonators

Dainkeh, Amadu; Nwajana, Augustine O.; Yeo, Kenneth Siok Kiam

doi:10.2528/pierc16042005

Cited by 8 publications

(5 citation statements)

References 8 publications

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“…The values for k 23 and Q ext in Figure 4a were all calculated from [15] using Equation ( 4), where f 1 and f 2 are the eigenmodes from simulating a pair of microstrip resonators. The calculated values for k 1 and k 2 were determined using Equation (5). These values (i.e., k 1 and k 2 ) ensure that 1/3 and 2/3 of the input power are delivered to ports 2 and 3, respectively.…”

Section: Microstrip Layout Designmentioning

confidence: 99%

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Unbalanced Two-Way Filtering Power Splitter for Wireless Communication Systems

et al. 2021

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A compact unbalanced two-way filtering power splitter with an integrated Chebyshev filtering function is presented. The design is purely based on formulations, thereby eliminating the constant need for developing complex optimization algorithms and tuning, to deliver the desired amount of power at each of the two output ports. To achieve miniaturization, a common square open-loop resonator (SOLR) is used to distribute energy between the two integrated channel filters. In addition to distributing energy, the common resonator also contributes one pole to each integrated channel filter, hence, reducing the number of individual resonating elements used in achieving the integrated filtering power splitter (FPS). To demonstrate the proposed design technique, a prototype FPS centered at 2.6 GHz with a 3 dB fractional bandwidth of 3% is designed and simulated. The circuit model and layout results show good performances of high selectivity, less than 1.7 dB insertion loss, and better than 16 dB in-band return loss. The common microstrip SOLR and the microstrip hair-pin resonators used in implementing the proposed integrated FPS ensures that an overall compact size of 0.34 λg × 0.11 λg was achieved, where λg is the guided-wavelength of the 50 Ω microstrip line at the fundamental resonant frequency of the FPS passband.

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Section: Microstrip Layout Designmentioning

confidence: 99%

“…A Wilkinson power divider is one of the most popular and widely used two-way PS due to its simple structure and electrical isolation [1]. This type of power splitter relies on quarter-wavelength transformers to match the output ports as reported in [5]. Several authors have proposed various design techniques for achieving FPS.…”

Section: Introductionmentioning

confidence: 99%

Unbalanced Two-Way Filtering Power Splitter for Wireless Communication Systems

et al. 2021

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“…The values for k23 and Qext in Fig. 3 (a) were all calculated from [2], [15] using (4), where f1 and f2 are the eigenmodes from simulating a pair of microstrip resonators. The calculated values for k1 was determined using (5).…”

Section: Microstrip Layout Designmentioning

confidence: 99%

“…Several authors have proposed various design techniques for achieving FPDs. [3], [4] proposed FPDs achieved by replacing the quarter-wavelength transformers in a Wilkinson power divider with bandpass filters. Two-way integrated FPDs with equal output power ratio have been proposed and achieved in [5]- [7], while those with unequal or arbitrary power ratios have been reported in [8]- [10].…”

Section: Introductionmentioning

confidence: 99%

Symmetric 3dB Filtering Power Divider with Equal Output Power Ratio for Communication Systems

Nwajana

Otuka

Ebenuwa

et al. 2020

2020 International Conference on Electrical, Communication, and Computer Engineering (ICECCE)

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This paper presents a two-way filtering power divider (FPD) with an equal output power ratio of 1:1. This implies that each of the FPD output port would receive 50% of the power at the input port. To achieve miniaturisation, a common square open-loop resonator is used to distribute energy between the two integrated Chebyshev bandpass filters. In addition to distributing energy, the common resonator also contributes one pole to each integrated bandpass filter (BPF), hence, reducing the number of individual resonating elements used in achieving the integrated FPD. To demonstrate the proposed design technique, a prototype FPD centred at 2.6 GHz with a 3 dB fractional bandwidth of 3% is designed, simulated and presented. The circuit model and microstrip layout results of the FPD show good agreement. The microstrip layout simulation responses show that a less than 1.1dB insertion loss and a greater than 16.5dB in-band return loss were achieved. The overall footprint of the integrated FPD is 37mm by 13mm (i.e. 0.32λg x 0.11λg, for λg = guided-wavelength of the 50Ω microstrip line at 2.6 GHz). The integrated FPD reported in this paper shows some promising merits when compared to similar devices recently reported in literature.

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“…6 which is based on Eq. (6), where f 0 is the fundamental resonant frequency of the cavity being simulated, and δf @−3 dB is the 3 dB bandwidth of the simulated curve [24]. The simulated Q ext values were achieved by adjusting the tapping distance, t as shown in Fig.…”

Section: External Quality Factor Extractionmentioning

confidence: 99%

Substrate Integrated Waveguide (Siw) Diplexer With Novel Input/Output Coupling and No Separate Junction

Nwajana¹,

Dainkeh²,

Yeo³

2018

PIER M

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Abstract-A microwave diplexer implemented by using the twenty-first century substrate integrated waveguide (SIW) transmission line technology is presented. No separate junction (be it resonant or nonresonant) was used in achieving the diplexer, as the use of an external junction for energy distribution in a diplexer normally increases design complexity and leads to a bulky device. The design also featured a novel input/output coupling technique at the transmit and receive sides of the diplexer. The proposed SIW diplexer has been simulated using the full-wave finite element method (FEM), Keysight electromagnetic professional (EMPro) 3D simulator. The design has also been validated experimentally and results presented. Simulated and measured results show good agreement. The measured minimum insertion losses achieved on transmit and receive channels of the diplexer are 2.86 dB and 2.91 dB, respectively. The measured band isolation between the two channels is better than 50 dB.

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Filtered Power Splitter Using Microstrip Square Open Loop Resonators

Cited by 8 publications

References 8 publications

Unbalanced Two-Way Filtering Power Splitter for Wireless Communication Systems

Unbalanced Two-Way Filtering Power Splitter for Wireless Communication Systems

Symmetric 3dB Filtering Power Divider with Equal Output Power Ratio for Communication Systems

Substrate Integrated Waveguide (Siw) Diplexer With Novel Input/Output Coupling and No Separate Junction

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