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引用次数: 6
摘要
本文提出了一种用于低谐波驱动应用的全集成6-12 GHz GaN MMIC推挽放大器。使用折叠的马尔尚平衡来执行不平衡-平衡和平衡-不平衡转换。三级推挽放大器在25V, 200mA的静态偏置点提供超过28db的小信号增益。6- 12ghz带宽的最小饱和输出功率为32.3 dBm。在饱和工作条件下，最坏情况下的二次谐波电平为-40 dBc，证明了推挽放大器抑制偶数次谐波的能力，特别是当二次谐波在放大器带宽内时。
A 6-12 GHz Push-Pull GaN Amplifier for Low Harmonic Drive Applications
This paper presents a fully integrated 6-12 GHz GaN MMIC push-pull amplifier for low harmonic drive applications. A folded Marchand balun is used to perform the unbalanced-balanced and balanced-unbalanced transformations. The three-stage push-pull amplifier provides in excess of 28 dB of small signal gain at a quiescent bias point of 25V, 200mA. The minimum saturated output power across the 6-12 GHz bandwidth is 32.3 dBm. The worst case second harmonic level under a saturated operating condition is -40 dBc, demonstrating the capability of the push-pull amplifier to suppress the even order harmonics, especially when the second harmonic is within the amplifier bandwidth.
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