本文介紹一個實現於 0.13um CMOS 製程、具高度整合、採用直接降頻架構之調諧器設計。
藉由所設計之寬頻、具雙交錯耦合技巧及雜訊消除功能之低雜訊放大器的輔助，整體調諧器雜訊
指數為3.7~4.3dB。發表之電流模式切換技巧可有效改善接收器之訊雜比。量測到的訊雜比在
-70dBm～-7dBm的接收強度下，均可保持在30dB以上，有效確保訊號之穩定接收。在連續接收模式下，整體功耗僅114毫瓦，供應電壓為1.2伏特。此調諧器可支援UHF及L-頻帶，晶片面積為7.2平方毫米。

This article introduces a fully integrated direct-conversion tuner in 0.13um CMOS technology. A broadband noise-canceling balun LNA with the proposed dual cross-coupling technique helps achieve an overall receiver noise figure from 3.7 to 4.3 dB. The proposed current-mode switching scheme improves the achievable SNIR. The measured maximum SNR value is better than 30 dB over wide input power levels, ensuring robust reception in a mobile environment. The tuner consumes 114 mW in the continuous mode from a supply of 1.2V. This compact tuner supports both UHF and L-bands, and the chip size is only 7.2mm2.