Design of Dual-Band Bandpass Filter With Multiple Transmission Zeros Using Transversal Signal Interaction Concepts

Wang, Litian; Xiong, Yi; Gong, Liang; Zhang, Man; Li, Hui; Zhao, Xinjie

doi:10.1109/lmwc.2018.2884147

Cited by 38 publications

(31 citation statements)

References 10 publications

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“…As can be seen, the proposed filter has the lowest insertion loss in the two passbands, the highest suppression levels in the upper stopbands, and the widest upper stopband as compared with the reported works in [34][35][36][37][38][39][40][41][42][43][44]. It can also be observed that the return loss in passbands is better than the works reported in [36,43,45]. In addition, the presented BPF provides a large tuning range as compared with other works in Table 1.…”

Section: Resultsmentioning

confidence: 54%

“…Multiband BPFs have a particular place in communication receivers due to their properties of high insertion loss (IL) in rejection area, tunable response and sharp transition band. According to the recent literature, different techniques were suggested for designing BPFs, such as balanced BPFs [20][21][22][23][24], multilayer structures [25,26], balun BPFs [27], substrate integrated waveguide (SIW) technology [28,29], fractal configurations [30,31] and coupled resonator circuits (CRCs) [32][33][34][35][36][37][38][39][40][41][42][43][44][45]. In [35], a BPF was designed using coupled feed lines and compact main resonators.…”

Section: Introductionmentioning

confidence: 99%

“…It had a short transition band, but the stopband was narrow. A similar coupling system was used along with some bended stubs to create a bandpass response through a compact filter design with 10 dB attenuation at the stopband in [36]. In [37], a dual-band BPF was developed using an improved stepped-impedance resonator, which showed a good suppression level due to several transmission zeros in the stopbands at a price of larger size.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Compact C-Band Bandpass Filter with an Adjustable Dual-Band Suitable for Satellite Communication Systems

et al. 2020

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A narrowband dual-band bandpass filter (BPF) with independently tunable passbands is presented through a systematic design approach. A size-efficient coupling system is proposed with the capability of being integrated with additional resonators without increasing the size of the circuit. Two flag-shaped resonators along with two stepped-impedance resonators are integrated with the coupling system to firstly enhance the quality response of the filter, and secondly to add an independent adjustability feature to the filter. The dual passband of the filter is centered at 4.42 GHz and 7.2 GHz, respectively, with narrow passbands of 2.12% and 1.15%. The lower and upper passbands can be swept independently over 600 MHz and 1000 MHz by changing only one parameter of the filter without any destructive effects on the frequency response. According to United States frequency allocations, the first passband is convenient for mobile communications and the second passband can be used for satellite communications. The filter has very good in- and out-of-band performance with very small passband insertion losses of 0.5 dB and 0.86 dB as well as a relatively strong stopband attenuation of 30 dB and 25 dB, respectively, for the case of lower and upper bands. To verify the proposed approach, a prototype of the filter is fabricated and measured showing a good agreement between numerically calculated and measured results.

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Section: Resultsmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Compact C-Band Bandpass Filter with an Adjustable Dual-Band Suitable for Satellite Communication Systems

et al. 2020

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“…However, the reported researches are mainly focus on performance of passband bandwidth and CM attention within passband, the out‐of‐band performance needs to be further addressed. The wide stopband performance of two port BPFs have been widely investigated 13‐15 . Nevertheless, the aforementioned methods are hardly applied to differential BPF with wide stopband feature.…”

Section: Introductionmentioning

confidence: 99%

Dual‐wideband differential bandpass filter with intrinsic common‐mode suppression based on hybrid transmission structure

Liang

Wang

et al. 2020

Int J RF Microw Comput Aided Eng

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Based on the microstrip‐line/slot‐line hybrid transmission structure, a novel method of realizing dual‐wideband differential bandpass filter (DDBPF) is proposed and demonstrated in this paper. By virtue of hybrid transmission structure, the proposed DDBPF has intrinsic common mode (CM) rejection. Moreover, the dual‐wideband transmission performance of differential mode (DM) signal can be approached by using two dual‐mode stub‐loaded stepped‐impedance resonators. The two passbands of the proposed DDBPF are respectively centered at 2.76 GHz and 4.12 GHz which fractional bandwidths are 20.7% and 11.4%. The DM harmonic suppression can extend to 43.5 GHz with rejection level of 13 dB. The CM attenuation of DDBPF can reach 60 dB within DM passband. Furthermore, the CM suppression with attenuation level of 20 dB is ranging from 0.5 GHz to 43.5 GHz. The measurement results are in good agreement with the simulation results, which validates the effectiveness of proposed design methodology.

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“…In [14], a DB-BPF with an ultrawide stopband is designed by using T-shaped and open stubs. In [28], the transversal signal interaction concept is adopted to generate multiple transmission zeros which results in an ultra-wide stopband of the proposed DB-BPF. However, the external coupling of these two filters are hard to controllable, so their bandwidths are also not changeable independently.…”

Section: Introductionmentioning

confidence: 99%

Individually controllable dual-band bandpass filter with multiple transmission zeros and wide stopband

Wen

Liu

et al. 2019

IEICE Electron. Express

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In this paper, a compact dual-band bandpass (DB-BPF) with multiple transmission zeros and wide stopband is developed. The DB-BPF consists of a pair of open-ended stub-loaded short-circuited steppedimpedance resonators with easy control of their two fundamental resonant modes. Moreover, multiple geometrical parameters in both the external feeding structure and the internal couplings between neighboring resonators are employed to make the individual control of the two passbands possible. Furthermore, the introduced multiple coupling paths between the resonators produce transversal signal interference which creates multiple transmission zeros. As a result, the selectivity of the passbands is improved significantly, and the stopband of the filter is extended greatly. A DB-BPF with center frequencies of 1.5 GHz and 3.65 GHz, and fractional bandwidths (FBWs) of 5% and 3% is fabricated, and its measured response agrees well with the predicted one.

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Design of Dual-Band Bandpass Filter With Multiple Transmission Zeros Using Transversal Signal Interaction Concepts

Cited by 38 publications

References 10 publications

A Compact C-Band Bandpass Filter with an Adjustable Dual-Band Suitable for Satellite Communication Systems

A Compact C-Band Bandpass Filter with an Adjustable Dual-Band Suitable for Satellite Communication Systems

Dual‐wideband differential bandpass filter with intrinsic common‐mode suppression based on hybrid transmission structure

Individually controllable dual-band bandpass filter with multiple transmission zeros and wide stopband

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