广东工业大学学报Issue(1)：79-85,7.DOI:10.3969/j.issn.1007-7162.2014.01.016
具有内外置天线切换功能的新型双射频低噪放大电路的设计
Design of a New Type of Double Radio Frequency Low Noise Amplifier Circuits with the Function of Inner and Outer Antenna Switching
林智凯 1林福民 1李庚禄 1李晓鹏1
作者信息
- 1. 广东工业大学物理与光电工程学院，广东广州510006
- 折叠
摘要
Abstract
It introduces a new type of double radio frequency low noise amplifier circuits with the function of switching between inner and outer antenna using GPS L1 , L2 band&GLONASS G1 , G2 band.The low noise amplifier circuit structure was improved , and the amount of restraint outside the band increased ob-viously , making it have better ability to resist interference .The new type of circuits had the function of switching between inner and outer antenna to avoid the influence of the outer antenna port interface on the signals of the inner antenna .The simulation results show that this new type of double radio frequency low noise amplifier circuits have low noise figure , high gain flatness and the ability of out-of-band rejection . The circuit's stability is good .A circuit sample was made , and then the debugging and testing were car-ried out.The main technical parameters of the measured results are in agreement with the simulation ones.The new type of double radio frequency low noise amplifier circuits have good characteristics .The sample circuit structure is compact , and the occupancy of PCB board area is lesser , which is very suit-able for hand-held high precision positioning receivers .关键词
低噪声放大电路/噪声系数/带外抑制/内外置天线切换电路Key words
low noise amplifier circuit/noise figure/out of band rejection/inner and outer antenna switching分类
信息技术与安全科学引用本文复制引用
林智凯,林福民,李庚禄,李晓鹏..具有内外置天线切换功能的新型双射频低噪放大电路的设计[J].广东工业大学学报,2014,(1):79-85,7.
