Title :
A highly linear short-wave ultra-wideband balanced amplifier
Author :
Gaogan Yu ; Yu Shi ; Huayi Zheng
Author_Institution :
State Key Lab. of Electron. Thin Film & Integrated Devie, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A Short-wave ultra-wideband balanced amplifier with high linearity and lower noise based on balanced structure is presented. The amplifier is realized by Equilibrium structure, Balun broadband matching, Coupler feedback and Power backoff technology. Equilibrium structure is used to greatly improve the second order distortion and Lossless coupler feedback to reduce the noise. The RF frequency is 1.5~100MHz. The test results show that the gain is 13 dB, the gain flatness is 0.1 dB, the maximum of noise figure is 3.1 dB, the referred 1-dB compression point (P1dB) is above 30dBm the second order output intercept point (OIP2) is above 90dBm, and the third order output intercept point (OIP3) is above 49dBm.
Keywords :
baluns; circuit noise; coupled circuits; differential amplifiers; feedback amplifiers; wideband amplifiers; OIP2; OIP3; balun broadband matching; equilibrium structure; frequency 1.5 MHz to 100 MHz; gain 0.1 dB; gain 1 dB; gain 13 dB; highly linear short-wave ultrawideband balanced amplifier; lossless coupler feedback; noise figure 3.1 dB; power back-off technology; second order output intercept point; third order output intercept point; Couplers; Gain; Impedance matching; Linearity; Noise; Radio frequency; Transistors; balanced amplifier; balun; feedback; high linearity; low noise; short wave;
Conference_Titel :
Electronic Packaging Technology (ICEPT), 2014 15th International Conference on
Conference_Location :
Chengdu
DOI :
10.1109/ICEPT.2014.6922879
