Compact Filtering Power Divider With Enhanced Second-Harmonic Suppression

Zhang, Xiu Yin; Wang, Kai-Xu; Hu, Bin‐Jie

doi:10.1109/lmwc.2013.2274993

Cited by 143 publications

(101 citation statements)

References 9 publications

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“…On the other hand, [8][9][10] have good IL, but with some compromise on the RL and isolation. The presented two design examples (CLFD and OLFD with a TL and resistor as isolation elements) achieved reasonable values for all S-parameters.…”

Section: Comparison Of the Proposed Methodology With Previous Workmentioning

confidence: 99%

“…Although for the presented two-way power divider, good size reduction and IL of 3.2 dB were possible, there was still room for improvement in the input and output port matching (S11 and S22/S33) and port isolation, which stood at about 15 dB, 20 dB, and 20 dB, respectively. Filtering dividers with relatively narrower bandwidth (BW) (FBW in the range of 4%-20%) have been reported in [4][5][6][7][8][9][10]. In another design approach, coupled-line BPF was integrated in a PD with a 3 dB hybrid used as an isolation element [4].…”

Section: Introductionmentioning

confidence: 99%

“…The presented approach improved the out-of-band rejection but output port isolation (using a resistor as isolation element) was only at 15 dB with high insertion loss of 6.4 dB. Yet another filtering PD design approach used a λ g /2 resonator, four λ g /4 resonators, and an isolation resistor to achieve an IL of 3.99 dB with output port RL and isolation of 20 dB each [8]. The compact design was operational over a FBW of 6.5%.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the design of equal division single-band filtering dividers with an extended transmission line and resistor as isolation elements

Khan¹,

Zhao²

2017

Turk J Elec Eng & Comp Sci

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This paper introduces a new scheme for effective output port isolation and return loss in RF-filtering divider design. The proposed design incorporates an extended transmission line and a conventional resistor as isolation elements.The technique has a simpler microstrip circuit implementation when it comes to the integration of a single-band bandpass filter with a Wilkinson power divider to achieve simultaneous filtering-dividing action. It is established that if a band-pass filter with a certain fractional-bandwidth is matched to 70.7 Ω , a transmission line section and isolation resistor are sufficient for achieving reasonable output port return loss and isolation in the resulting filtering divider.In experimental validation, two single-band band-pass filters, namely a coupled-line filter and an open-loop coupled resonator triangular filter with center frequencies of 3 GHz and 1 GHz, respectively, effectively replace the conventional quarter-wavelength transformers for equal division of power. The proposed filtering divider structures were fabricated and a reasonable agreement was observed between respective simulated and measured S-parameter responses. The experimental results for a coupled-line filtering power divider and an open-loop triangular filtering power divider were as follows: 1 dB fractional-bandwidths of 15.3% and 12%, port isolations better than 31 dB and 20 dB, and good out-of-band performances up to 2.67f 0 and 2.85f 0 , respectively.

show abstract

Section: Comparison Of the Proposed Methodology With Previous Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

On the design of equal division single-band filtering dividers with an extended transmission line and resistor as isolation elements

Khan¹,

Zhao²

2017

Turk J Elec Eng & Comp Sci

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“…Recently, a few integrated designs have been developed [6][7][8][9][10][11][12][13][14]. In [6][7][8], the filtering and power splitting functions are realized by cascading a filtering structure with a Wilkinson power divider.…”

Section: Introductionmentioning

confidence: 99%

“…This straightforward method occupies a considerable area. An alternative method is to merge the filter and power divider to obtain the dual functions [9][10][11][12]. However, these circuit topologies are difficulty for high-order design.…”

Section: Introductionmentioning

confidence: 99%

Novel Filtering Power Divider Using Multiple Internal Resistors

Dai²

2014

PIER Letters

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Abstract-In this paper, we present a novel 3rd filtering power divider with high in-band isolation. The proposed device employs six quarter-wavelength resonators and six internal isolation resistors symmetrically arranged to require the power division and filtering function. Based on the circuit topology, the multiple resistors can be integrated to obtain a good isolation and port impedance matching. Compared to the conventional power divider with bandpass response, the new device is easy to realize a high-order design with a good isolation. For demonstration, a prototype operating at 1.5 GHz with more than 20 dB in-band isolation is implemented. Simulated and experimental results agree well, validating the proposed methodologies.

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Advances in Power Splitters

Xue

Zhang

2014

Wiley Encyclopedia of Electrical and Electronics Engineering

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This article summarizes recent advances in the art of power splitter designs. Diverse design concepts and techniques proposed in recent years are introduced, mainly focusing on the out‐of‐phase power splitters, in‐phase power splitters, filtering power splitters, and high‐power waveguide power splitters. Because of the popularity of balanced circuits, out‐of‐phase power splitters are heavily demanded. The double‐sided parallel‐strip lines (DSPSLs), with the frequency‐independent out‐of‐phase characteristics, are attractive transmission lines for wideband out‐of‐phase power splitter designs. The design methods based on DSPSL for various power splitting responses have been presented, including single‐ and dual‐band, wideband, arbitrary power division ratios. Then, the research on in‐phase power splitters are addressed, focusing on dual‐band operation, arbitrary power division ratios, multiway division, reconfigurable responses, and size miniaturization. The four typical methods for achieving dual‐band operation and five methods for realizing unequal power division ratios are presented. In addition, some techniques for multiway power splitters and reconfigurable power dividers are introduced. As for size reduction techniques, the LTCC and MMIC fabrication processes are introduced and example designs are included. Later, the concept of filtering power splitters is introduced. The power splitters and bandpass filters are combined together to form dual‐function devices with both power splitting and filtering functions. The responses of equal and unequal power division ratios as well as dual‐band operation are presented with the associated design techniques. Finally, coaxial waveguide power splitters are introduced, which are suitable for high‐power millimeter‐wave applications. Various oversized coaxial waveguide structures and probe array arrangement are presented for multioutput applications. Furthermore, some advances on radial waveguide spatial power splitters are addressed and the typical examples are included.

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Compact Filtering Power Divider With Enhanced Second-Harmonic Suppression

Cited by 143 publications

References 9 publications

On the design of equal division single-band filtering dividers with an extended transmission line and resistor as isolation elements

On the design of equal division single-band filtering dividers with an extended transmission line and resistor as isolation elements

Novel Filtering Power Divider Using Multiple Internal Resistors

Advances in Power Splitters

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