Design and Analysis of a Wide Stopband Microstrip Dual-band Bandpass Filter

Yahya, Salah I.; Rezaei, Abbas; Khaleel, Yazen A.

doi:10.14500/aro.10908

Cited by 10 publications

(14 citation statements)

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“…Its advantage is small size, low loss, and wide bandwidth. In, [3] using coupling structure, several capacitors are created to control the stopband, where we can see many transition zeros. According to the resonance frequencies, the designed filter in [4] is suitable for wireless local area networks.…”

Section: Structures Performance and Applications Of Filtersmentioning

confidence: 99%

“…In Table 2, NOC represents the number of channels, IL and RL, respectively. As presented in Table 2, best IL and RL are obtained by [3] and, [1] respectively, while the design of a microstrip device with more channels is hard.…”

Section: Structures Performance and Applications Of Filtersmentioning

confidence: 99%

“…Diplexers are three-port devices which uses two different channels to separate and transmit the desired signals. They are Overall size: 0.0017 λ g 2 [3] Overall size: 0.056 λ g 2 [4] Overall size: 0.036 λ g 2 (320mm 2 ) consisting of two filters integrated by a matching circuit. To design a lowpass-bandpass diplexer, it is necessary to design two different lowpass filter and BPF, while a bandpass-bandpass diplexer needs to design a resonator, only.…”

Section: Structures Performance and Applications Of Diplexersmentioning

confidence: 99%

“…M odern wireless communication systems widely need to microstrip passive devices such as filters, [1][2][3][4][5][6] diplexers, [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] multiplexers (triplexers [23][24][25][26][27][28][29][30] and quadruplexers, [31][32][33][34][35][36][37] five-channel multiplexer [38] ), and couplers. [39][40][41][42][43][44][45][46][47][48][49] For all of these passive devices, it is very necessary to have small dimensions, low insertion loss (IL), low return loss (RL), suppressed undesired harmonics, sharp roll-off at the edge of passbands (high frequency selectivity), etc.…”

Section: Introductionmentioning

confidence: 99%

“…The proposed filter in [1] works at 0.85 and 1.85 GHz for Mobile Communication-850 and 1900 Global Systems. In [3] the filter size is large but it can attenuate 28 th harmonics up to 85 GHz, where it operates at 3 and 6.3 GHz. Coupled open loops have been utilized in [4] to obtain a dual band BPF for wireless local area networks.…”

Section: Introductionmentioning

confidence: 99%

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A Review on the Structure, Application and Performance of the Passive Microstrip Devices

Rezaei

Yahya

2022

Cihan U Erbil SCI J

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Microstrip technology is widely applied for design and implementation of several communication devices such as filters, diplexers, triplexers, multiplexers, couplers, etc. They are utilized to isolate desired signals and remove disturbing signals. The layout of filters, diplexers and triplexers have two, three and four ports, respectively. Passive filters have at least one pass channel, whereas diplexers have at least two channels to transmit the desired signal, and multiplexers have more passbands with more channels. In order to implement the passive components, first a cell called resonator must be designed. Creativity is very important in resonator design. It must be small and novel to get a better device than previous works. Therefore, the layout of previous reported resonator, used in passive microstrip devices, are studied in this work. There is a fierce competition among designers to miniaturize and increase the device performance. Hence we will investigate them, from the point of view size and performance, in this work. Some diplexers are multi-channel, which are more difficult to design than two-channel diplexers. Therefore, the multi-channel diplexers are less reported than the two-channel diplexers. The design of multiplexers is also very difficult because several channels must be controlled. Hence, they are less designed than filters and diplexers. The diplexers can be bandpass-bandpass or lowpass-bandpass, where the latest is less designed. This is because designing a lowpass-bandpass diplexer needs lowpass and bandpass resonators, whereas the design of a bandpass-bandpass diplexer needs only a bandpass resonator.

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Section: Structures Performance and Applications Of Filtersmentioning

confidence: 99%

Section: Structures Performance and Applications Of Filtersmentioning

confidence: 99%

Section: Structures Performance and Applications Of Diplexersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Review on the Structure, Application and Performance of the Passive Microstrip Devices

Rezaei

Yahya

2022

Cihan U Erbil SCI J

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An ultra-compact diplexer based on simple microstrip coupled lines for GSM and wideband wireless applications

Rezaei,

Yahya,

Nouri

2023

Wireless Netw

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Design and Optimization of a Compact Microstrip Filtering Coupler With Low Losses and Improved Group Delay for High-Performance RF Communication Systems

Yahya,

Zubir,

Nouri

et al. 2023

IEEE Access

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In this paper, a compact filtering coupler is presented using a new microstrip configuration. To improve the frequency response, achieve good phase balance and reduce the losses of the proposed coupler, an optimization method is used along with a mathematical analysis method. Our coupler works at 1.9 GHz, which is suitable for 5G and GSM applications. The working frequency range of our designed coupler is from 1.84 GHz to 2.11 GHz, where it has a fractional bandwidth (FBW) of 13.7%. The phase and magnitude imbalances are only 0.029 o and 0.08 dB, respectively, making it suitable for applications in microwave components, communication and radar systems. The maximum group delays at the direct and coupling ports are 1.9 ns and 2.3 ns, respectively. This is an advantage because most of the previously reported microstrip couplers have not addressed the group delay improvement. The other advantages of our coupler are its filtering frequency response and a good isolation factor of -42 dB around the operating frequency. The proposed structure is mathematically analyzed and optimized. It is fabricated and measured to verify the simulation results and the proposed mathematical analysis. The results show that all mathematical analysis, simulation and measurement results are in good agreement. The experimental results confirm its performance in terms of low losses, low group delay and low phase and magnitude imbalances. Therefore, the presented design offers a significant improvement over the traditional couplers, which generally suffer from the large size, high group delay and poor phase and magnitude balances.

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Design and Analysis of a Wide Stopband Microstrip Dual-band Bandpass Filter

Cited by 10 publications

References 0 publications

A Review on the Structure, Application and Performance of the Passive Microstrip Devices

A Review on the Structure, Application and Performance of the Passive Microstrip Devices

An ultra-compact diplexer based on simple microstrip coupled lines for GSM and wideband wireless applications

Design and Optimization of a Compact Microstrip Filtering Coupler With Low Losses and Improved Group Delay for High-Performance RF Communication Systems

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