An Ultra-Wideband Power Combining in Ridge Waveguide for Millimeter Wave

Dang, Zhang; Zhu, Haifan; Huang, Jian; He, Haidan

doi:10.1109/tmtt.2019.2963861

Cited by 15 publications

(8 citation statements)

References 31 publications

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“…With a binary-tree topology, they reached an IL of IL SE = 0.7 dB with 32 source ports from 31 to 36 GHz. More bandwidth (18-40 GHz) has been obtained with a binary tree based on ridge waveguides [4]-this design features an IL of 0.8 dB. Ridge waveguides have also been used in conjunction with radial lines at S-/C-and X-bands, respectively [14], [17].…”

Section: State Of the Artmentioning

confidence: 99%

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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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Section: State Of the Artmentioning

confidence: 99%

“…In particular, for larger n, this type of combiner is therefore preferably realized in waveguide technology, as has been shown in the Ka-band for n = 32 by Epp et al [3]. Other publications target an improved bandwidth performance [4] or higher operating frequencies [5], [6] up to G-band [7].…”

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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“…At present, most existing PAs related to the beautiful design and construction of buildings suffer from various limitations 12–43 . Harmonic controlled amplifiers are no longer applicable due to very little efficiency improvement as well as narrow bandwidth at mm‐wave band 12–14 .…”

Section: Introductionmentioning

confidence: 99%

“…Power combining amplifiers can enhance the output power, but its bandwidth and efficiency will be limited by the combined network. [15][16][17][18][19][20][21][22][23][24][25] Continuous mode PAs provide a wideband design theory by introducing larger impedance design space. Although continuous closed-form design theory has been easily derived, this method is more complicated to operate.…”

mentioning

confidence: 99%

A 23–29.5 GHz three‐stage mm‐wave GaN power amplifier using arbitrary two‐port complex‐impedance matching method

Zhao

Zhu

Xia

et al. 2023

Circuit Theory & Apps

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SummaryThis paper presents a broadband monolithic millimeter‐wave integrated circuit GaN power amplifier (PA) with arbitrary two‐port complex‐impedance matching method. The proposed matching topology has been applied to interstage matching network design by modifying traditional coupling matrix and synthesizing a desired network. The optimum load traction technique is introduced to provide some more suitable Zopts. After continuous‐wave test, the three‐stage MMIC PA achieves a peak PAE of 39.1% with a 34.9 dBm output power from 23 to 29.5 GHz and the measured S21 is 32.5 dB with a ±2.5 dB gain variation. When driven by a 400 MHz OFDM modulation signal with a PAPR of 8.5 dB, the measured ACPR is improved to −40.6/−40.7 dBc with DPD. In this case, the PA achieves an average PAE of 11.7% and a 26.7 dBm average output power.

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“…A waveguide power-combining technique where a single chip containing a pair of E-plane probes connecting two standard waveguides is described for E-band operation in [5]. A 16-way broadband power-combiner was demonstrated using ridge waveguide T-junctions to achieve 18 to 40 GHz bandwidth [6]. For frequencies above 200 GHz, Northrop developed a 185 mW power module at 210 GHz with four 75 mW amplifiers and conventional waveguide Y-junctions [7].…”

Section: Introductionmentioning

confidence: 99%

WR-3.4 Overmoded Waveguide Module for the Packaging of a Linear Integrated-Circuit Array

2022

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The performance of WR-3.4 overmoded waveguide modules containing a linear array of discrete terahertz integrated circuits is presented to verify a new power-combining technique. Custom-designed thru-line IC chips that include back-to-back broadband antenna transitions were fabricated with an area of 390 × 750 mm2 for waveguide packaging. Multiple array modules were assembled to verify the repeatability in performance. The array modules exhibited almost identical amounts of insertion losses compared with single-element modules, showing the best insertion loss of 2.6 dB over a 1 dB bandwidth of 95 GHz.

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An Ultra-Wideband Power Combining in Ridge Waveguide for Millimeter Wave

Cited by 15 publications

References 31 publications

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

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

A 23–29.5 GHz three‐stage mm‐wave GaN power amplifier using arbitrary two‐port complex‐impedance matching method

WR-3.4 Overmoded Waveguide Module for the Packaging of a Linear Integrated-Circuit Array

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