摘要
设计了一个24 GHz上变频混频器,基于吉尔伯特结构全集成了3个片上巴伦电路。采用gm/I方法协调晶体管大小为了获得较好的转换增益、隔离度与电路耗散功率。电路实现采用厦门三安0.5μm PHEMT工艺,5 V电压供电,在本振LO为0 dBm时,转换增益为9 dBm。工作在24 GHz频段时,1 dB压缩点为-20 dBm,混频器的最大输出功率为-10 dBm,射频输出端口与本振的隔离度大于32 dB,整个电路直流功耗40 mW,芯片面积为1 mm×1.3 mm。
Based on the structure of Gilbert, a 24 GHz up-conversion mixer was designed with three-piece balun circuit on-chip.Using the gm/I method to coordinate the transistor size to obtain better conversion gain, isolation degree and circuit dissipation power. The circuit implementation is adopted by the xiamen san-0. 5 μm PHEMT process, 5 V voltage power supply, and the conversion gain is 9 dBm when this LO power is 0 dBm. When work at 24 GHz band, 1 dB compressed point is-20 dBm, the maximum output power of the mixer is-10 dBm, RF output port and the LO port isolation degree is more than 32 dB, the whole circuit DC power consumption of 40 MW, chip area is 1 mm × 1. 3 mm.
出处
《电子技术应用》
2018年第3期26-30,共5页
Application of Electronic Technique
关键词
上变频
吉尔伯特
巴伦
转换增益
up- conversion
Gilbert
balun
conversion gain
