⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种多频段LTE无SAW调制器，解决了传统方案中因双工器隔离不足导致的RX频段噪声问题，从而省去了功率放大器前的SAW滤波器。该设计在40nm LP CMOS工艺中实现了-160dBc/Hz的RX频段噪声性能，满足了LTE标准对噪声的严苛要求。
receive band due to the finite duplexer TX to RX isolation. If this noise is not low enough, a SAW filter is needed before the Power Amplifier to preserve the RX sensitivity. Out-of-band noise is also an important concern for coexistence of cellular transmitters with standards like GPS, WLAN and/or WiMAX on the same smart phone, a very common scenario nowadays. The SAW-less RX-band noise challenge becomes even more acute in the Long-Term Evolution (LTE) standard
Vito Giannini1, Mark Ingels1, Tomohiro Sano2, Bjorn Debaillie1,
Jonathan Borremans1, Jan Craninckx1 1 imec, Leuven, Belgium, 2Renesas Electronics, Itami, Japan In FDD cellular standards, the transmitter’s out of-band noise leaks into the