宽带有源射频 TX 路由器的设计

IF 4.1 1区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Tsung-Hwa Hsieh;Jian-Yu Li
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摘要

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Design of the Wideband Active RF TX Router
A $2\times 2$ wideband active RF TX router is proposed to increase peak data rates and use fragmented spectrum efficiently. The proposed router can separate and aggregate carriers for 4G/5G applications, and its configuration contains two cascaded sections. The first section consists of four parallel channels, each comprising a single-pole single-throw (SPST) switch and a resistive-feedback inverter-type amplifier. The second section is composed of two identical cascode amplifiers arranged in parallel. The proposed router with this combination offers two operating modes: separation and aggregation, each consisting of two types, with impedance matching across different modes. In addition, the proposed router provides isolation among different channels and reverse isolation within the same channels. Design equations and procedures are also developed for the proposed router with its two operating modes. An example realized in the standard 0.18- $\mu $ m CMOS process is presented. The observed results demonstrate that the proposed router achieves an average gain of −1 and −1.5 dB in the frequency ranges of 0.5–4.55 GHz and 0.52–4.62 GHz, respectively, with input and output return loss higher than 8 dB for separation and aggregation modes, respectively. The output 1-dB gain compression point (OP $_{1\,\text {dB}}$ ) ranges from −1.73 to 1.93 dBm and −1.9 to 1.5 dBm for separation and aggregation modes, respectively. The isolations, among different channels and within the same channels, are better than 27 and 20 dB for separation and aggregation modes, respectively.
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来源期刊
IEEE Transactions on Microwave Theory and Techniques
IEEE Transactions on Microwave Theory and Techniques 工程技术-工程:电子与电气
CiteScore
8.60
自引率
18.60%
发文量
486
审稿时长
6 months
期刊介绍: The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.
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