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本文分析了文献[1]中的3种传输线变压器巴仑的最佳传输条件和传输损耗,并给出其计算结果,为多模馈电网络的优化提供了更为详尽的理论参考。  相似文献
2.
A fully integrated CMOS differential power amplifier driver(PAD) is proposed for WiMAX applications. In order to fulfill the differential application requirements,a transmission line transformer is used as the output matching network.A differential inductance constitutes an inter-stage matching network.Meanwhile,an on chip balun realizes input matching as well as single-end to differential conversion.The PAD is fabricated in a 0.13μm RFCMOS process.The chip size is 1.1×1.1 mm~2 with all of the matching network integrated on chip. The saturated power is around 10 dBm and power gain is about 12 dB.  相似文献
3.
Several novel on-chip three-solenoid windings transformer baluns were designed and fabricated using post-CMOS compatible concave-suspending micromachining process, which are applicable in the design of radio-frequency integrated circuits (RFICs). A generalized lumped-element circuit model (LECM) is developed to accurately characterize input and output characteristics of these three-port signal conversion devices, with the partial element equivalent circuit (PEEC) method implemented for capturing skin and proximity effects in them. Satisfactory agreements are obtained among the measured, simulated, and modeled S-parameters of the fabricated baluns over the frequency range of 500 MHz-10 GHz. Measurements show that these baluns exhibit less than 1 dB amplitude imbalance and less than 1° phase imbalance up to 6 GHz. Their power transfer and impedance matching are also examined in details.  相似文献
4.
巴伦用于将不平衡信号转为平衡信号,在微波技术和天线领域得到了广泛的应用。其中变压器式巴伦工作频段宽且适合大功率使用。对变压器式巴伦进行了研究,并通过等效变换对其工作原理进行了详细的理论分析,最后讨论了实际制作和测量的方法。  相似文献
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