Dual-Band Filtering Power Divider Based on a Single Circular Patch Resonator With Improved Bandwidths and Good Isolation

Zhang, Qiyun; Zhang, Gang; Liu, Zhengkang; Chen, Wang; Tang, Wanchun

doi:10.1109/tcsii.2021.3081266

Cited by 25 publications

(13 citation statements)

References 16 publications

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“…For the frequency response performance to be improved, many types of resonators are used [15]- [27]. Recently, other resonator shapes such as u-shaped [15], [16], t-shaped [17], pi-shaped [18], stepped-impedance [19], and patch resonators [20], [21] have been introduced, showcasing the diverse and innovative approaches in the field of resonator design for various applications in electronics and communication systems. Patch resonators are utilized in [22] to produce a filtering response.…”

Section: Introductionmentioning

confidence: 99%

Low insertion loss open-loop resonator–based microstrip diplexer with high selective for wireless applications

Elabd,

Al-Gburi,

Alhassoon

et al. 2024

Bulletin EEI

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This paper presents a low-insertion-loss open-loop resonator (OLR)-based microstrip diplexer with high-selective for wireless applications. We used two series capacitive gaps in the microstrip transmission line, loaded with rectangular-shaped half-wavelength OLRs, to create a high-selectivity bandpass filter (BPF). The planned BPFs are linked through a T-junction combiner, precisely tuned to align with both filters and the antenna port in order to produce the proposed diplexer. The system is implemented on a rogers TMM4 substrate with a loss tangent of 0.002, a dielectric constant of 4.7, and a thickness of 1.52 mm. The suggested diplexer has dimensions of (90×70) mm². It achieves a modest frequency space ratio of R=0.1646 in both transmit and receive modes by having two resonance frequencies of ft=2.191 GHz and fr=2.584 GHz, respectively. The simulated structure displays good insertion losses of approximately 1.2 dB and 1.79 dB for the two channels, respectively, at fractional bandwidths of 1.24% at 2.191 GHz and 0.636% at 2.584 GHz. The simulated isolation values for 2.191 GHz and 2.584 GHz are 53.3 dB and 66.5 dB, respectively.

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Section: Introductionmentioning

confidence: 99%

Low insertion loss open-loop resonator–based microstrip diplexer with high selective for wireless applications

Elabd,

Al-Gburi,

Alhassoon

et al. 2024

Bulletin EEI

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“…Different kinds of resonators are also used for the performance improvement of the frequency response [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. Different shapes of the resonators have been recently presented, such as U-shaped [ 26 ], T-shaped [ 27 ], Pi-shaped, [ 28 ] stepped-impedance [ 29 ], and patch resonators [ 30 , 31 ]. In [ 30 ], patch resonators are used to have a filtering response.…”

Section: Introductionmentioning

confidence: 99%

“…Different shapes of the resonators have been recently presented, such as U-shaped [ 26 ], T-shaped [ 27 ], Pi-shaped, [ 28 ] stepped-impedance [ 29 ], and patch resonators [ 30 , 31 ]. In [ 30 ], patch resonators are used to have a filtering response.…”

Section: Introductionmentioning

confidence: 99%

Design of a Compact Quad-Channel Microstrip Diplexer for L and S Band Applications

et al. 2023

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In this paper, two novel dual-band bandpass filters (BPFs) and a compact quad-channel diplexer working at 1.7/3.3 GHz and 1.9/3.6 GHz are proposed. In the proposed diplexer design, triangular loop resonators and rectangular loop resonators are used together to reduce the circuit size and improve diplexer performances. Insertion loss (IL) and return loss (RL) of the proposed diplexer are better than 0.8 dB and 21 dB, respectively, at these four operating frequencies. Output ports isolation parameter is better than 30 dB. With the achieved specifications, the proposed diplexer can be used in L and S band applications.

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“…Various techniques, such as rectangular-shaped resonators [7], circular-shaped resonators [8, 9], open stubs [10, 11], taper transmission lines [12], and coupled lines [13], have been used to design a PD by attenuating undesired signals and small dimensions. These structures are inefficient and complex, despite their excellent features.…”

Section: Introductionmentioning

confidence: 99%

Design of dual-band Wilkinson power divider based on novel stubs using PSO algorithm

Zonouri

Hayati

Bahrambeigi

2023

Int. J. Microw. Wireless Technol.

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In this paper, a new dual-band Wilkinson power divider (WPD) is designed and fabricated using novel low and high impedance stubs instead of quarter-wavelength transmission lines. The proposed circuit was analyzed using odd and even mode analysis, and the optimal values of design parameters were obtained using the particle swarm optimization algorithm. The designed power divider has input reflection coefficients (S11) of −22.1 and −17 dB at the first operating frequency of 2.2 GHz and the second operating frequency of 14.2 GHz, respectively. It also improves stop-band and fractional bandwidth (FBW) while maintaining a simple topology. The proposed WPD suppresses undesired harmonics from the second to the fifth with an attenuation level of less than −20 dB in the first band and generates a broad stop-band (4.4–11.5 GHz). In the first band, the FBW is 54.5%, and in the second band, it is 20.1%.

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Dual-Band Filtering Power Divider Based on a Single Circular Patch Resonator With Improved Bandwidths and Good Isolation

Cited by 25 publications

References 16 publications

Low insertion loss open-loop resonator–based microstrip diplexer with high selective for wireless applications

Low insertion loss open-loop resonator–based microstrip diplexer with high selective for wireless applications

Design of a Compact Quad-Channel Microstrip Diplexer for L and S Band Applications

Design of dual-band Wilkinson power divider based on novel stubs using PSO algorithm

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