Ultra-wideband (UWB) power divider with filtering response using shorted-end coupled lines and open/short-circuit slotlines

Int. J. Microw. Wireless Technol.

Zhou

Fan

et al. 2017

Self Cite

A wide-stopband bandpass-filtering power divider with high-frequency selectivity has been proposed in this paper. The input and output feeding lines and eight 1/4 wavelength resonators are used to realize the signal transmission. In order to obtain good frequency selectivity, source-load coupling transmission path is used to generate transmission zeros near the passband. A four-way power divider with bandpass-filtering response and high-frequency selectivity is designed, fabricated, and measured. The measured results agree with the simulated ones closely in the desirable frequency range. The measured center frequency of the power divider is 2.38 GHz with input return loss of 31.2 dB, while the measured insertion loss is about 1 dB (not including ideal 6 dB four-way power dividing insertion loss). Moreover, the measured 3-dB bandwidth is 12% and the measured stopband attenuation is >15 dB from 2.59 to 7.7 GHz. In addition, two transmission zeros of 1.9 and 2.8 GHz are located near the passband. The measured output isolations are all >15.7 dB.

Section: Introductionmentioning

confidence: 99%

Wide-stopband bandpass-filtering power divider with high-frequency selectivity

Int. J. Microw. Wireless Technol.

Zhou

Fan

et al. 2017

Self Cite

“…Power divider is one of the most important passive circuits and is widely used in radio frequency (RF) and microwave circuits [1–21]. The power divider with bandpass‐filtering response is attractive because of compact size and multiple functions.…”

Section: Introductionmentioning

confidence: 99%

“…Power dividers with bandpass‐filtering response [8–21] have been developed. Among them, a power divider with wideband filtering response based on capacitive‐loaded transmission line resonators is presented in [10].…”

Section: Introductionmentioning

confidence: 99%

“…Among them, a power divider with wideband filtering response based on capacitive‐loaded transmission line resonators is presented in [10]. Slotline [11, 12], shorted‐end coupled lines [13, 14] are used to obtain ultra‐wideband (UWB) filtering response. A pair of stepped‐impedance open‐circuited stubs and parallel coupled lines have been utilised to construct a UWB power divider with sharp roll‐off skirt [15].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Compact in‐phase power divider integrated filtering response using spiral resonator

IET Microwaves, Antennas & Propagation

Ren

Chen

et al. 2014

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A compact in‐phase power divider with filtering response is presented in this study. Spiral resonators are meant to realise compact size and bandpass‐filtering response. To improve the frequency selectivity of the presented power divider, a source–load cross‐coupling is introduced by placing input and output coupling lines. An in‐phase power divider with passband‐filtering response has been designed, fabricated and measured. The measured return loss and insertion loss of the fabricated power divider are 22 and 1.3 dB at 2.45 GHz, respectively. The 3 dB operating bandwidth of the fabricated power divider is 175 MHz. The total area of the fabricated power divider is 0.15λg × 0.3λg. The measured results verify the predicted attractive features.

“…But the most obvious drawback is the narrow bandwidth, whose fractional bandwidth is usually about 20%. In recent years, as the concept of the ultra‐wideband (UWB) was proposed, many UWB power dividers were presented . Different types of structures and design methods have been developed to design UWB power dividers.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐wideband power divider with a notched band using embedded dual‐mode resonators

Micro & Optical Tech Letters

Duan

et al. 2014

Self Cite

An ultra‐wideband (UWB) Wilkinson power divider with a notched band is presented. Multisection Wilkinson structure is utilized to realize UWB response. The notched band is introduced using the embedded dual‐mode resonators. The central frequency and bandwidth of the notched band can be adjusted independently by tuning the structural parameters of the embedded dual‐mode resonators. Even and odd analyses are used to analyze the proposed structure. The presented power divider has been developed and measured. The measured notched band is located at 1.78 GHz with an attenuation of greater than 14 dB. The measured results show reasonable agreement with the predicted ones. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2758–2762, 2014