A Novel Approach to the Design and Implementation of Dual-Band Power Divider

Cheng, K.-K.M.; Law, Choi Look

doi:10.1109/tmtt.2007.914629

Cited by 147 publications

(62 citation statements)

References 9 publications

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“…It is crucial to design dual-band power dividers for practical applications. In the past, several approaches were proposed for the design of dualband power divider [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. In [13], a power divider using two-section transmission lines cascaded was introduced with the main drawback of poor isolation and output return loss.…”

Section: Introductionmentioning

confidence: 99%

“…A dual-band topology based on stepped impedance [17] was presented, but the major shortfalls of this scheme are poor isolation and output return loss. Some designs by adding shunt stubs [18][19][20] were recommended, but they have defect of large size [18,19] or poor bandwidth [20]. Another design using extended ports [21,22] was introduced, which is inconvenient for design because of falling short of closed-form design formulas.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Approach to the Design of Dual-Band Power Divider With Variable Power Dividing Ratio Based on Coupled-Lines

Zhe¹,

Chu²

2010

PIER

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Abstract-This paper presents an approach to the design of a novel dual-band power divider with variable power dividing ratio. To achieve dual-band operation, a novel dual-band quarter-wave length transformer based on coupled-lines is proposed, which is used to replace the quarter-wave length transformer in Wilkinson power divider. The proposed dual-band power divider features a simple compact planar structure with wide bandwidth performance for small frequency ratio. Closed-form design equations with one degree of design freedom are derived using even-and odd-mode analysis and transmission line theory. For verification purpose, power dividers operating at 2.4/3.8 GHz with dividing ratios of 2 : 1 and 1 : 1 are designed, simulated and measured. The simulated and measured results are in good agreement.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Approach to the Design of Dual-Band Power Divider With Variable Power Dividing Ratio Based on Coupled-Lines

Zhe¹,

Chu²

2010

PIER

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“…In usual, the conventional power dividers are designed at a single band [8][9][10][11]. Recently, many researches have been made in designing new Wilkinson power dividers for dual-frequency application [12][13][14][15][16][17][18][19][20]. In obtaining ideal isolation effect in various dualfrequency power dividers, three novel isolation structures including parallel RLC [13], series RLC [14], and combining of parallel R and series LC [15] demonstrate better isolating effect than traditional single resistor isolators on the same layouts.…”

Section: Introductionmentioning

confidence: 99%

“…In obtaining ideal isolation effect in various dualfrequency power dividers, three novel isolation structures including parallel RLC [13], series RLC [14], and combining of parallel R and series LC [15] demonstrate better isolating effect than traditional single resistor isolators on the same layouts. In [16][17][18][19][20], other modified types of Wilkinson power dividers without reactive components have been proposed to operate at dual band. In order to break the limit of equal output power at the two outports of these dual band power dividers in [12][13][14][15][16][17][18][19][20], dual band power dividers with unequal power dividing have been proposed in [21] and [22], however, the design parameters cannot be obtained using analytical approach [21] while the perfect matching of outports in the corresponding design procedure are not theoretically considered [22].…”

Section: Introductionmentioning

confidence: 99%

“…In [16][17][18][19][20], other modified types of Wilkinson power dividers without reactive components have been proposed to operate at dual band. In order to break the limit of equal output power at the two outports of these dual band power dividers in [12][13][14][15][16][17][18][19][20], dual band power dividers with unequal power dividing have been proposed in [21] and [22], however, the design parameters cannot be obtained using analytical approach [21] while the perfect matching of outports in the corresponding design procedure are not theoretically considered [22]. Furthermore, to obtain the perfect matching at all of ports and isolation between the two outports, a new unequal Wilkinson power divider for a frequency and its first harmonic has been proposed in [23].…”

Section: Introductionmentioning

confidence: 99%

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An Unequal Dual-Frequency Wilkinson Power Divider With Optional Isolation Structure

Wu¹,

Liu²,

Li³

2009

PIER

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Abstract-In this paper, we propose a generalized Wilkinson power divider operating at two arbitrary frequencies with unequal power dividing ratio. To achieve unequal power division and perfect matching at dual-frequency, a novel structure consisted of four dual-frequency transformers in two sections is proposed. For the compact power divider, the parallel and series RLC structures can be chosen to obtain effective isolation between the two outports according to different frequency ratios. Furthermore, the closed-form design equations of the unequal dual-frequency power divider are derived based on circuit theory and transmission line theory. Finally, simulation and experiment results of two examples including parallel and series RLC structures indicate that all the theoretical features of these unequal power dividers can be fulfilled at dual-frequency simultaneously.

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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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A Novel Approach to the Design and Implementation of Dual-Band Power Divider

Cited by 147 publications

References 9 publications

A Novel Approach to the Design of Dual-Band Power Divider With Variable Power Dividing Ratio Based on Coupled-Lines

A Novel Approach to the Design of Dual-Band Power Divider With Variable Power Dividing Ratio Based on Coupled-Lines

An Unequal Dual-Frequency Wilkinson Power Divider With Optional Isolation Structure

Advances in Power Splitters

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