A novel wideband radial waveguide power combiner using coaxial-to-ridge waveguide transitions

Deng, Jiang; Wang, Hongtao; Hu, Yi-Ming; Zhao, Peng

doi:10.1063/1.5087720

Cited by 6 publications

(4 citation statements)

References 23 publications

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“…Other parameters of the mode converter are shown in Figure 5b. In addition, efforts are made to release potential electric field concentration by chamfering the corners of the converter (with radius r) [18,19].…”

Section: Coaxial-rectangular Waveguide Mode Convertermentioning

confidence: 99%

A Compact Broadband Power Combiner for High-Power, Continuous-Wave Applications

Yang,

Zhang,

Zhou

et al. 2024

Micromachines

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A compact broadband combiner with a high power capacity and a low insertion loss, which is especially useful for solid-state power sources where multi-way power synthesis is needed, was designed and experimentally investigated. The combiner could combine the microwave signals of sixteen terminals into a single one and was based on a radial-line waveguide whose circumferential symmetry benefited the amplitude and phase consistency of the combiner. Simulation and experimental results showed that the prototype device, designed for S-band applications, exhibited a reflection coefficient S1,1 < −20 dB in the range of 2.06–2.93 GHz, which corresponds to a relative bandwidth of approximately 34.6%. At 2.45 GHz, the phase imbalance was ±4.5° and the 16-way transmission coefficient was concentrated around −12.0~−12.3 dB. The insertion loss of the device at ambient and elevated temperatures was simulated and experimentally verified, which is of importance for the design of similar high-power microwave combiners. High-power tests proved that even without enforced wind or liquid cooling, the device can handle continuous power (CW) of at least 3.9 kW, which can be much enhanced by taking regular cooling measures. The combined features of the designed combiner suggest promising applications for power synthesis in high-power, solid-state RF sources.

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Section: Coaxial-rectangular Waveguide Mode Convertermentioning

confidence: 99%

A Compact Broadband Power Combiner for High-Power, Continuous-Wave Applications

Yang,

Zhang,

Zhou

et al. 2024

Micromachines

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“…UWB power divider (PD)/ synthesizer, as an essential component for power dividing or synthesizing in circuits or space, should not only behave high transmission efficiency, high waveform fidelity, but also should be as compact as possible [6,7,8,9]. When input by high-power signals, the impedance distribution of the transmission system is limited [10], the transmission line can adopt all-metal structure [11,12,13] or coaxial line with large transverse size [14,15]. The PD described in [16,17,18,19,20] showed advanced circular symmetry and their main ports were divided to more than 8 branches, which earned excellent transmission performance.…”

Section: Introductionmentioning

confidence: 99%

A large-transverse-size short-pulse 4-way power divider with high fidelity

Shi

Xia

Zhang

et al. 2023

IEICE Electron. Express

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A novel compact 4-way ultra-wideband short pulse power divider (PD) based on coaxial waveguide is proposed in this paper. A nylon conical shell is inserted to replace the original transformer oil with an air block at the resonant place of PD to widen the working bandwidth. The junction of all inner conductors is smoothed to increase the fidelity and power capacity. The proposed PD is fabricated and tested. The results show that return loss is better than 12 dB from 191 MHz to 1.33 GHz. The amplitude loss is less than 10% and fidelity is more than 0.95 when input by impulse with full width at half maximum (FWHM) of 1.24 ns.

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“…For an additional doubling in the number of unit amplifiers, Jia and York [11] and Jia et al [12] combined this concept with fin line tapers. Other exceptionally broadband combiner solutions were demonstrated using ridge waveguides as peripheral ports [13], [14].…”

Section: Introductionmentioning

confidence: 99%

16-Way Ka-Band Power Combiner Using Novel Waveguide Transitions

Neininger

Zink

John

et al. 2022

IEEE Trans. Microwave Theory Techn.

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In this article, we present the design, manufacturing, and experimental validation of a Ka-band wide-bandwidth and low-loss 16-way combiner. We specifically focus on the analysis and demonstration of the combiner's suitability for operation at millimeter-wave (mmW) frequencies. To that end, we extend the established radial-combiner design procedure. As part of this, we propose an oversized feeder design that allows for exceptional insertion and return loss. Furthermore, for the first time, we introduce a peripheral transition from the radial line to rectangular waveguide with integrated matching network and suitable schematic models. We also explore the design space of the radial line itself by analyzing the properties of various height tapers and, as a result, introduce an optimized radial-line profile that minimizes its reflections. The demonstrator measurements indicate an insertion loss (IL) of less than 0.24 dB, a return loss of better than 17 dB, and a phase imbalance of less than 3 • in the entire Ka-band. To the best of the authors' knowledge, this is the lowest IL for a wideband multiway combiner and at the same time one of the most broadband combiner solutions realized in the Ka-band.

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A novel wideband radial waveguide power combiner using coaxial-to-ridge waveguide transitions

Cited by 6 publications

References 23 publications

A Compact Broadband Power Combiner for High-Power, Continuous-Wave Applications

A Compact Broadband Power Combiner for High-Power, Continuous-Wave Applications

A large-transverse-size short-pulse 4-way power divider with high fidelity

16-Way Ka-Band Power Combiner Using Novel Waveguide Transitions

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