A compact 1.7 - 2.1 GHz three-way power combiner using microstrip technology with better than 93.8% combining efficiency

Maurin, D.; Wu, Ke

doi:10.1109/75.482004

Cited by 15 publications

(2 citation statements)

References 5 publications

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“…10.24 [57]. For RF or low microwave frequency applications, a solution based on the introduction of air-bridges, realized through bonding wire connections, can be adopted, as shown in Fig.…”

Section: Planarization Of N-way Wilkinson Splitter/combinermentioning

confidence: 99%

Power Combining

general

2009

High Efficiency RF and Microwave Solid State Power Amplifiers

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Power amplifiers are employed in a variety of system applications, where the required power levels are largely different, varying from mW to kW [1,2]. Consequently, a wide variety of PA realizations results, from travelling-wave tube amplifiers in very high power systems [3,4], in satellite payloads or radars, to solid-state amplifiers for medium-low power systems [5,6], such as wireless communication handsets. The request for high output power levels is influencing device technologies adopted for PA module realization [7,8]. Prior to the development of solid state devices, microwave power amplification and generation were mainly based on the use of vacuum tubes [9, 10], including magnetron, klystron and travelling-wave implementations (TWTAs) [4,11]. These devices still remain in use at kilowatt levels, where solid-state devices cannot compete so far.Nevertheless, the development of high power microwave solid-state device technologies (GaAs HEMT or HBT, GaN HEMT, etc.) may offer an order-of-magnitude improvement in reliability and reduction in size, weight, and low-voltage power-supply requirements as compared to vacuum devices. However, the output power attainable from a single solid-state device is basically limited by thermal and impedance matching problems. To meet system requirements it is therefore mandatory to combine several devices, thus attaining higher power levels. Many power splitting/combining schemes have been investigated and developed, involving different technologies and propagation media, ranging from metal waveguides (cavities, microstrips, striplines, etc.) where the power is confined into a limited region, to open space configurations [12][13][14].Devices involved in power splitting/combining operations are referred to as power splitters/ combiners and they play a key role in the design of high power PA, while being also fundamental components in designing mixers [15], multipliers and oscillators [16,17], or other linear and nonlinear circuits [18]. Moreover, since the proposed schemes can often be adopted for both the tasks of power division and combination, the terms power combining and power splitting are usually adopted simultaneously or interchangeably. Due to their intrinsic reciprocal characteristic in fact, the same device can alternatively be viewed as a power combiner or as a power splitter, depending on the selection of its input and output ports.The key features of power splitting/combining devices are clearly their insertion loss (related to the efficiency), bandwidth and size. The techniques adopted for the optimization of device performance are strictly related to the type of splitting/combining structure and to the selected realization technology. High Efficiency RF and Microwave Solid State Power Amplifiers

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Section: Planarization Of N-way Wilkinson Splitter/combinermentioning

confidence: 99%

Power Combining

general

2009

High Efficiency RF and Microwave Solid State Power Amplifiers

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“…However, it has the disadvantage that it requires a floating common node to connect all isolation resistors, which rules out the planar geometry for N > 2 and causes difficulty in fabrication. This difficulty is alleviated in the modified design by Gysel [2], but both Wilkinson and Gysel dividers suffer from small operating bandwidth [3,4]. recently novel dual band Wilkinson power dividers have been proposed [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Seven Ports Power Divider With Various Power Division Ratios

Al-Zayed

Mahmoud²

2011

PIER

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Abstract-A seven ports network is proposed to act as a six-way power divider/combiner. The proposed network structure consists of a set of λ/4 planar transmission lines at the design frequency and does not require any isolating resistor. The power divider is capable of providing various power ratios by judicious choice of the transmission lines characteristic impedances. Design equations are derived for arbitrary power ratios. Simulation results obtained from the ADS software proved the possibility of achieving preset power ratios with fairly linear phase response over a certain bandwidth. The latter depends on the chosen power ratios. Measured results of manufactured power dividers agree well with simulations and theory.

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Power Transformers, Combiners, and Couplers

Grebennikov¹

2011

RF and Microwave Transmitter Design

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A compact 1.7 - 2.1 GHz three-way power combiner using microstrip technology with better than 93.8% combining efficiency

Cited by 15 publications

References 5 publications

Power Combining

Power Combining

Seven Ports Power Divider With Various Power Division Ratios

Power Transformers, Combiners, and Couplers

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