⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种用于多频段便携式DVB-H接收机的低噪声有源巴伦，通过IM2抵消技术解决了宽带和多频段操作中的二阶互调失真问题，覆盖VHF-III和UHF IV-V频段。
Broadband low noise amplifiers are needed in a variety of applications, from multistandard cellular receivers to terrestrial and handheld TV tuners [1,2]. For broadband and multiband operation, intermodulation and cross-modulation impose additional linearity requirements to the RF front-end [2,3]. In a multiband DVB-H receiver covering both VHF-III (from 170 to 230MHz) and UHF IV-V (from 470 to 890MHz) receive bands [4], cross-modulation between VHF III and UHF IV-V channels gives rise to second order intermodulation distortion (IM2) products that fall from 650MHz up to 890MHz, covering most of the UHF IV-V band. Cross-modulation between UHF IV-V band channels gives rise to IM2 products covering the whole VHF-III band. The most stringent second-order intermodulation intercept point (IIP2) requirement is given by single-tone S2 test patterns [4]: the maximum interferer level for a portable
Daniele Mastantuono, Danilo Manstretta
University of Pavia, Pavia, Italy