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该论文提出了一种覆盖VHF-III、UHF和L波段的统一接收机前端，无需外部巴伦或专用窄带无线电，通过增益提升电流平衡巴伦LNA和电流复用混频器LPF实现了低噪声和高线性度。
receiver front-end (RFE) for mobile TV covering the VHF-III (174 to 248MHz), UHF (470 to 862MHz) and L (1.4 to 1.7GHz) bands. The RFE (Fig. 9.7.1) is tailored to avert any external balun, or dedicated narrow-band radios, commonly found in prior arts [1, 2]. The featured advances are threefold: 1) a gain-boosting current-balancing balun-LNA addresses the imbalanced bias current (ICS=4ICG) and load (RCG=4RCS) conditions of the noisecanceling balun-LNA [3], improving IIP2 and wideband output balancing while eliminating output buffers; 2) a current-reuse mixer-LPF realizes quadrature/ harmonic-rejection (HR) mixing and 3rd-order current-mode post filtering in one block, enhancing linearity and noise just where both are demanding, while saving power and area; 3) a direct injection-locked 4-/8-phase LO generator (LOG)
Pui-In Mak1, Rui Martins1,2, 1
University of Macau, Macau, China, Instituto Superior Tecnico, Lisbon, Portugal 2 This paper describes a unified