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oe1(光电查) - 科学论文

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  • 1-to-N Ring Power Combiners With Common Delta Ports

    摘要： In this paper, we present a new 1-to-N way ring combiner that is an adaptation of the ring-hybrid (rat-race) structure. We present the general design guidelines for N-way planar ring combiners based on theoretical analysis of the structures. The proposed 1-to-N way ring structure offers a compact, planar layout that includes a single common delta port. This is beneficial to applications where power monitoring, calibration, or energy recycling can be leveraged. It offers similar loss to other N-way structures. To demonstrate the combiners operation, we present completely passive structures and structures with embedded power amplifiers for 4- and 6-way variants. The designs are optimized for operation in the 5–6 GHz unlicensed bands. The passive 4- and 6-way combiners achieve IL of 1.3 and 1 dB, respectively, with associated port isolations of <?30 dB. The combiners with embedded amplifiers show similar performance and are validated using modulated signals and demonstrate good measured linearity when combining up to 6 amplifiers for output powers >1 W.

    关键词： ring-hybrid combiner,high power amplifier,power divider,Power combiner,rat-race combiner

    更新于2025-09-23 15:22:29

  • NEW STABILIZATION TECHNIQUE TO PREVENT PARAMETRIC OSCILLATIONS IN A 35 W C-BAND ALGAN/GAN MMIC HIGH POWER AMPLIFIER

    摘要： In this paper, a novel stabilization scheme to prevent parametric oscillations in power amplifiers is presented. Based on a new oscillation detection approach, the inductive degeneration technique was used, for the first time, to successfully stabilize a high-power amplifier and prevent parametric oscillations. A 0.15 μm AlGaN/GaN Microwave Monolithic Integrated Circuit high power amplifier operating at 5.8 GHz with 10% fractional bandwidth was designed and successfully stabilized using this approach. The proposed (4.7 × 3.7) mm2 three-stage amplifier achieves a saturated output power of 35 W with 29% power added efficiency and a large-signal gain of 26 dB.

    关键词： AlGaN/GaN,MMIC,high power amplifier,stabilization technique,parametric oscillations

    更新于2025-09-10 09:29:36