Dual‐wideband filtering power divider based on center‐fed three‐line coupled structure

Qiu, Gongan; Yang, Jiale; Xu, Kai; Shi, Jin

doi:10.1002/mmce.22294

Cited by 6 publications

(6 citation statements)

References 30 publications

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“…Power dividers (PDs) play an important role in industrial electronics systems for high‐efficiency power transmission 1‐3 . With the increasing demands of enhancing the degree of integration and reduce losses in RF and microwave systems, joint design of filters and power dividers has attracted more and more attention in recent years 4‐6 . Filtering PDs (FPDs) have the inherent filtering functionality with no need of additional bandpass filters, which reduces the size of communication path and the loss caused by device cascading.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of miniaturized wideband four‐way filtering power divider consisting of unequal‐width three‐coupled‐lines

Liu

Guan

et al. 2021

Int J RF Microw Comput Aided Eng

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A miniaturized wideband four‐way filtering power divider (FPD) is presented in this article. It is composed of unequal‐width three‐coupled‐lines (TCLs), stepped‐impedance open‐circuited stubs, and isolation resistors. By using two groups of the unequal‐width TCLs and the stepped‐impedance open‐circuited stubs, size reduced four‐way FPD with wideband filtering responses and out‐of‐band rejection is realized. Besides, good output ports matching and isolation are obtained by inserting two types of air‐bridge resistors. In the theoretical analysis section, the impedance matrix of the unequal‐width TCL is introduced, for the first time, and rigorous closed‐form design equations for the proposed FPD are also derived. Moreover, the methodology for computer‐aided design is given based on the design equations. For demonstration, a prototype operating at 1.5 GHz is designed, fabricated, and measured. The measured results validate the 80% bandwidth with more than 17 dB out‐of‐band rejection, more than 14 dB isolation and more than 15 dB return loss at all output ports. Compare with the reported four‐way FPD with similar bandwidth, a size reduction of 74% is obtained.

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Section: Introductionmentioning

confidence: 99%

Synthesis of miniaturized wideband four‐way filtering power divider consisting of unequal‐width three‐coupled‐lines

Liu

Guan

et al. 2021

Int J RF Microw Comput Aided Eng

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show abstract

“…The co‐design of filter and power divider is highly desired, which can not only reduce the overall circuit size but also eliminate the connection loss. Accordingly, filtering power dividers (FPDs) based on microstrip line, 3‐10 metal waveguide, 11 dielectric resonator (DR), 12,13 and substrate integrated waveguide (SIW) 14‐20 have been extensively studied in the past few years.…”

Section: Introductionmentioning

confidence: 99%

“…Typically, most of the microstrip FPDs are designed using the Wilkinson or Gysel topology 3‐10 . The FPDs achieve the filtering response by replacing the quarter‐wavelength transformer with the coupled line or stub‐loaded transmission line generally 3,4 .…”

Section: Introductionmentioning

confidence: 99%

Compact HMSIW four‐way filtering power divider with pre‐defined division ratio

Yan

Qin

et al. 2021

Int J RF Microw Comput Aided Eng

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A novel and simple design approach of compact four‐way filtering power divider (FPD) using half‐mode substrate integrated waveguide (HMSIW) cavity is investigated in this letter. The pre‐defined power division ratio of the four outputs is obtained by adjusting the external quality factor (Qe) of each output port, while the total output Qe is equal to the input Qe. The four outputs are loaded to a single HMSIW resonator, achieving a compact size. Meanwhile, both bandpass response and power division can be designed independently. For demonstration, a prototype with pre‐defined power division ratio of 1:3:3:1 is designed, fabricated, and measured. The measured results show that the FPD centered at 4.88 GHz owns a 3‐dB fractional bandwidth (FBW) of 11.3%. The insertion loss of the passband is about 1.4 dB and the return loss is better than 17 dB, meanwhile the phase differences of in‐phase four outputs are all within 5° from 4.61 to 5.16 GHz. Good agreement is observed between the simulated and measured results.

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“…To meet the high integration, compact size, and low loss requirements, the filtering function and power splitting function integrate into a single component as filtering PD (FPD) to perform dual functions in a single unit. [11][12][13][14][15][16][17] Additionally, in order to achieve various wireless services, multifunctional devices are widely employed. Among them, the dual-band (DB) BPF and DB FPD are appropriate choices for the multi-band response which little researches have been done on the design of these components.…”

Section: Introductionmentioning

confidence: 99%

Novel single‐layer dual‐band half‐mode substrate integrated waveguide filter and filtering power dividers with very compact sizes

Danaeian

2021

Int J RF Microw Comput Aided Eng

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Dual‐wideband filtering power divider based on center‐fed three‐line coupled structure

Cited by 6 publications

References 30 publications

Synthesis of miniaturized wideband four‐way filtering power divider consisting of unequal‐width three‐coupled‐lines

Synthesis of miniaturized wideband four‐way filtering power divider consisting of unequal‐width three‐coupled‐lines

Compact HMSIW four‐way filtering power divider with pre‐defined division ratio

Novel single‐layer dual‐band half‐mode substrate integrated waveguide filter and filtering power dividers with very compact sizes

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