突破宽带信号分析瓶颈！芯片研发新工具来了

Core Viewpoint - The article discusses the challenges faced by current spectrum analyzers in meeting the demands of modern RF applications, highlighting the innovative features of the new FSWX spectrum analyzer from Rohde & Schwarz, which utilizes a multi-input port architecture and cross-correlation technology to enhance measurement capabilities and address existing limitations in wideband signal analysis [1][25]. Group 1: Challenges in Current Spectrum Analyzers - Modern RF applications require higher data rates, wider modulation bandwidths, and higher-order modulation schemes, which current devices struggle to meet due to insufficient dynamic range in wideband and high-power testing [1]. - Traditional methods like IQ averaging and cross-correlation signal processing are used to overcome these limitations, but they have their own constraints, such as the need for signal repeatability in IQ averaging [1][2]. Group 2: Innovative Features of FSWX - The FSWX spectrum analyzer features a pioneering multi-receive path architecture that effectively reduces mirror frequency interference and spurious signals, supporting modern wireless communication standards and radar applications without the need for external power splitters [3][27]. - Cross-correlation technology enhances measurement capabilities, allowing for results that traditional spectrum analyzers cannot achieve, particularly in phase noise measurements [6][7]. Group 3: Performance Enhancements - The FSWX can accurately measure phase noise, which is critical for modern communication applications, ensuring optimized performance of oscillators and synthesizers [7][9]. - The analyzer's multi-path architecture allows for faster detection of hidden spurious signals without compromising resolution bandwidth, significantly improving measurement speed [9][10]. Group 4: Overcoming Technical Limitations - The FSWX utilizes a filter bank for pre-selection, providing wider bandwidth and flatter frequency response compared to traditional YIG filters, thus enhancing dynamic range and measurement accuracy [12][15]. - The combination of filter banks and multi-path receiver structures allows for effective detection of spurious signals while maintaining measurement speed [13][14]. Group 5: Applications in Radar and Communication - The FSWX is designed to simplify the testing setup for phased array antennas, which are crucial in aerospace, mobile communications, and automotive radar applications [17][19]. - It enables independent configuration of local oscillator frequencies and input gain parameters, allowing for precise monitoring of radar signals affected by strong communication signals [19][21]. Group 6: Conclusion - The FSWX spectrum analyzer represents a significant advancement in addressing the limitations of contemporary signal and spectrum analyzers, offering enhanced dynamic range, measurement speed, and simplified testing configurations for emerging technologies [25][27].