A Wideband Balanced-to-Unbalanced Coupled-Line Power Divider

Abstract-For the first time, the six-port quadrature and rat-race couplers with balanced-unbalanced-hybrid ports are proposed. The corresponding design methodology is presented, which is capable of designing the proposed couplers with arbitrary power divisions and terminated resistances. In this paper, four types including quadrature and rat-race couplers are fully analyzed, covering all the application configurations of the balanced/unbalanced ports. Besides, the design equations are rigorously derived, with the final design procedures presented. Eventually, prototypes of the four coupler types are fabricated and experimentally measured. The final results sufficiently validate the proposed methodology.

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“…and the equation (14). Substitute (13) into the four conditions (14), (61) and (62), the following equation group could be established:…”

Section: E the Rat-race Coupler Typementioning

confidence: 99%

Design Methodology for Six-Port Equal/Unequal Quadrature and Rat-Race Couplers With Balanced and Unbalanced Ports Terminated by Arbitrary Resistances

Jiao

Zhang

et al. 2018

IEEE Trans. Microwave Theory Techn.

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“…(13), (14), (23) and (24). For different power division ratios, design parameters are listed in Table 1.…”

Section: Design Examplesmentioning

confidence: 99%

“…Various types of BTU PDs are reported in the literature such as [13][14][15][16]. BTU PDs for equal power division are reported in [13][14][15], and that for arbitrary power division is reported in [16].…”

Section: Introductionmentioning

confidence: 99%

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Unbalanced-to-Balanced Power Divider With Arbitrary Power Division

Yadav¹,

Bhattacharjee²

2017

PIER C

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Abstract-In this paper, Gysel type Unbalanced-to-Balanced (UTB) Power Divider (PD) with arbitrary power division is proposed. UTB PD is a five-port device, and a standard scattering matrix for a five-port PD with arbitrary power division is derived. Design equations are obtained analytically. Using design equations, a UTB PD is designed at 2 GHz for power division ratio of 1 : 2, and simulation is carried out using HFSS. A prototype is fabricated, and measurement is performed to verify the simulation results of PD. Measured results are in good agreement with the simulated ones. The proposed PD shows in-phase characteristic within ±5 • . Measurement results show that isolation between two output ports is greater than 20 dB. Greater than 20 dB common-mode suppression from input port to output balanced ports is achieved. Differential-mode power is divided in power division ratio of 1 : 2 from unbalanced port to balanced ports. Measured fractional bandwidth of the proposed PD is 21%.

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“…The other kind of balanced‐to‐single‐ended power divider is out‐of‐phase. For example, the balanced‐to‐single‐ended power dividing networks using coupled lines or microstrip lines with loaded stubs are reported with out‐of‐phase output.…”

Section: Introductionmentioning

confidence: 99%

Filtering balanced-to-single-ended power dividing network

Zhang

et al. 2018

Int J RF Microw Comput Aided Eng

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In this article, the filtering balanced‐to‐single‐ended power dividing networks are proposed. Except the fundamental functions of differential‐mode transmission, common‐mode suppression, and out‐of‐phase single‐ended output ports with isolation, the proposed designs show the advantages of wide controllable range of differential‐mode bandwidth, multiple transmission zeros (TZs), and wide bandwidth for high out‐of‐band suppression. The frequencies of TZs, bandwidth, isolation, and common‐mode suppression can be controlled by the parameters. For demonstration, three prototypes (Deigns I, II, and III) with two, four, or six TZs are implemented. The measured results show that design I (II and III) has an insertion loss of 0.38 dB (0.7 dB and 0.8 dB), an operating bandwidth of 12.5% (7.5% and 6.9%), and a bandwidth for 30‐dB out‐of‐band suppression of 0.06f0 (0.09f0 and 0.14f0). The isolation and common‐mode suppression inside the passbands of the three prototypes are all larger than 17 and 38 dB, respectively.

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A Wideband Balanced-to-Unbalanced Coupled-Line Power Divider

Cited by 58 publications

References 6 publications

Design Methodology for Six-Port Equal/Unequal Quadrature and Rat-Race Couplers With Balanced and Unbalanced Ports Terminated by Arbitrary Resistances

Design Methodology for Six-Port Equal/Unequal Quadrature and Rat-Race Couplers With Balanced and Unbalanced Ports Terminated by Arbitrary Resistances

Unbalanced-to-Balanced Power Divider With Arbitrary Power Division

Filtering balanced-to-single-ended power dividing network

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