共查询到19条相似文献,搜索用时 203 毫秒
1.
采用GaAs PHEMT工艺,研究了PHEMT器件材料结构和大信号建模,分析了如何提高电路效率,并利用ADS软件对电路进行了原理图与版图优化设计,成功研制了高效率Ka波段GaAs功率放大器MMIC。电路采用三级级联放大,各级选取合适的总栅宽,使用Wilkinson功率分配/合成网络,采用阻性网络消除奇模振荡,输入输出均匹配至50Ω。在36~40 GHz频带内测试,测试结果表明:饱和输出功率大于2 W,功率增益大于17 dB,功率附加效率大于20%,频带内最高效率高达25%,芯片尺寸3.7 mm×3.2 mm。 相似文献
2.
3.
4.
介绍了一种Ku波段GaAs功率放大器芯片的研制过程。芯片采用电抗匹配电路结构,三级级联放大,末级采用多胞器件进行功率合成,实现了电路的高增益和所要求的功率输出;另外,还对元器件模型技术、GaAsMM IC测试技术等进行了相应描述。在芯片的研制过程中,利用ADS软件进行仿真及优化,利用电磁场仿真进行版图设计。在4英寸(100 mm)0.25μmGaAs PHEMT工艺线上完成芯片制作,在12.5~15.0 GHz的频率范围内,脉冲饱和输出功率Po大于34.7 dBm(脉宽100μs,占空比10%),功率增益Gp大于19.7 dB,功率附加效率PAE大于30%,功率增益平坦度小于±0.4 dB。该芯片可以应用到许多微波系统中。 相似文献
5.
6.
7.
8.
9.
报道了一种新型的砷化镓宽带高效内匹配功率放大器,它采用集总参数与分布参数相混合的匹配电路形式,取用南京电子器件研究所研制的12 mm功率PHEMT管芯,研制的内匹配功率放大器在12~15 GHz频带内,输出功率大于5 W,功率增益大于6 dB,相对带宽为25%,典型功率附加效率为25%。 相似文献
10.
《固体电子学研究与进展》2001,(3)
南京电子器件研究所于 2 0 0 0年进行了 Ga As功率 PHEMT的研究开发 ,完成了“WC2 0 0 3型高电子迁移率功率晶体管”项目的设定和 Ku波段 1 0 W功率 PHEMT的研制。WC2 0 0 3型器件在 9.4~ 9.9GHz带内 ,输出功率大于 2 .5W,功率增益大于 9.5d B,功率附加效率典型值为 40 % ,带内增益起伏小于± 0 .5d B,该器件的栅宽为 4.8mm。采用两个 9.6mm栅宽功率 PHEMT管芯合成研制的 Ku波段内匹配功率 PHEMT,在 1 0 .5~ 1 1 .3GHz带内 ,输出功率大于 9.8W,带内最大输出功率为 1 0 .9W,功率增益大于 9.9d B,功率附加效率典型值为 40 %… 相似文献
11.
Chu C.-K. Huang H.-K. Liu H.-Z. Lin C.-H. Chang C.-H. Wu C.-L. Chang C.-S. Wang Y.-H. 《Microwave and Wireless Components Letters, IEEE》2007,17(2):151-153
This letter presents a compact X-band high gain and high power four-stage AlGaAs/InGaAs/GaAs pseudomorphic high electron mobility transistor (PHEMT) monolithic microwave integrated circuit (MMIC) high power amplifier (PA). This amplifier is designed to fully match a 50-Omega input and output impedance. Based on 0.35-mum gate-length power PHEMT technology, this PA MMIC is fabricated on a 3-mil thick wafer. While operating under 8 V and 2700-mA dc bias condition, the characteristics of 40-dB small-signal gain, a 10-W continuous-wave saturation output power, and 33% power added efficiency at 9.7GHz can be achieved 相似文献
12.
Chen-Kuo Chu Hou-Kuei Huang Hong-Zhi Liu Che-Hung Lin Ching-Hsueh Chang Chang-Luen Wu Chian-Sern Chang Yeong-Her Wang 《Microwave and Wireless Components Letters, IEEE》2008,18(10):707-709
An X-band high-power and high power added efficiency (PAE), two-stage AlGaAs/InGaAs/GaAs psuedomorphic high electronic mobility transistor (PHEMT) monolithic microwave integrated circuit (MMIC) power amplifier is presented. The amplifier is designed to fully match a 50 Omega input and output impedance. Based on a 0.35 mum gate-length power PHEMT technology, the MMIC is fabricated on a 3 mil thick wafer. Under an 8 V DC bias condition, the characteristics of 17.5 dB small-signal gain, 10 W continuous wave mode saturation output power of 42% PAE, and 12.6 W pulse saturation output power of 52.6% PAE at 9.4 GHz can be achieved. 相似文献
13.
Hong-Yeh Chang Huei Wang Yu M. Yonghui Shu 《Microwave and Wireless Components Letters, IEEE》2003,13(4):143-145
A MMIC 77-GHz two-stage power amplifier (PA) is reported in this letter. This MMIC chip demonstrated a measured small signal gain of over 10 dB from 75 GHz to 80 GHz with 18.5-dBm output power at 1 dB compression. The maximum small signal gain is above 12 dB from 77 to 78 GHz. The saturated output power is better than 21.5 dBm and the maximum power added efficiency is 10% between 75 GHz and 78 GHz. This chip is fabricated using 0.1-/spl mu/m AlGaAs/InGaAs/GaAs PHEMT MMIC process on 4-mil GaAs substrate. The output power performance is the highest among the reported 4-mil MMIC GaAs HEMT PAs at this frequency and therefore it is suitable for the 77-GHz automotive radar systems and related transmitter applications in W-band. 相似文献
14.
A 4 W K-band AlGaAs/InGaAs/GaAs pseudomorphic high electron mobility transistor (PHEMT) mono-lithic microwave integrated circuit (MMIC) high power amplifier (PA) is reported. This amplifier is designed to fully match for a 50 Ω input and output impedance based on the 0.15 μm power PHEMT process. Under the condition of 5.6 V and 2.6 A DC bias, the amplifier has achieved a 22 dB small-signal gain, better than a 13 dB input return loss,and 36 dBm saturation power with 25% PAE from 19 to 22 GHz. 相似文献
15.
Lin C.-H. Liu H.-Z. Chu C.-K. Huang H.-K. Liu C.-C. Chang C.-H. Wu C.-L. Chang C.-S. Wang Y.-H. 《Microwave and Wireless Components Letters, IEEE》2007,17(2):154-156
A compact 6.5-W AlGaAs/InGaAs/GaAs PHEMT monolithic microwave integrated circuit (MMIC) power amplifier (PA) for Ku-band applications is proposed. This two-stage amplifier with chip size of 8.554mm2 (3.64mmtimes2.35mm) is designed to fully match 50-Omega input and output impedance. Under 8V and 2000mA dc bias condition, the PA deliver 38.1dBm (6.5W) saturated output power, 10.5-dB small signal gain and peak power added efficiency of 24.6% from 13.6 to 14.2GHz. This MMIC also achieved the best power densities (760mW/mm2) at Ku band reported to date 相似文献
16.
17.
High linearity 5.2-GHz power amplifier MMIC using CPW structure technology with a linearizer circuit
《半导体学报》2010,31(2)
A built-in linearizer was applied to improve the linearity in a 5.2-GHz power amplifier microwave monolithic integrated circuit (MMIC), which was undertaken with 0.15-μm AlGaAs/InGaAs D-mode PHEMT technology.The power amplifier (PA) was studied taking into account the linearizer circuit and the coplanar waveguide (CPW) structures. Based on these technologies, the power amplifier, which has a chip size of 1.44 × 1.10 mm~2, obtained an output power of 13.3 dBm and a power gain of 14 dB in the saturation region. An input third-order intercept point (IIP_3) of-3 dBm, an output third-order intercept point (OIP_3) of 21.1 dBm and a power added efficiency (PAE) of 22% were attained, respectively. Finally, the overall power characterization exhibited high gain and high linearity, which illustrates that the power amplifier has a compact circuit size and exhibits favorable RF characteristics. This power circuit demonstrated high RF characterization and could be used for microwave power circuit applications at 5.2 GHz. 相似文献
18.
Hong-Zhi Liu Che-Hung Lin Chen-Kuo Chu Hou-Kuei Huang Mau-Phon Houng Ching-Hsueh Chang Chang-Luen Wu Chian-Sern Chang Yeong-Her Wang 《Microwave and Wireless Components Letters, IEEE》2006,16(6):330-332
In this letter, the design of a self-bias 1.8-mm AlGaAs/InGaAs/GaAs pseudomorphic high electron mobility transistor with a compact source capacitor for operation in Ku-band frequency is described. Based on the proposed device, a self-bias Ku-band 1-W two-stage power amplifier monolithic microwave integrated circuit (MMIC) is also demonstrated. Under a single bias condition of 8 V and 630 mA, the self-bias MMIC possesses 14.2-dB small-signal gain, 30.2-dBm output power at 1-dB gain compression point with 19.2% power added efficiency and 31.3-dBm saturated output power with 22.5% power added efficiency at 14GHz. With the performance comparable to the dual-bias MMIC counterpart, the proposed self-bias MMIC is more attractive to system designers on very small aperture terminal applications. 相似文献
19.
A successful development of a very high performance and reliable power PHEMT MMIC technology is reported. In this paper, a Ku-Band 1 W AlGaAs/InGaAs/GaAs PHEMT MMIC power amplifier for VSAT ODU application is demonstrated. This four-stage amplifier is designed to fully match for a 50 Ω input and output impedance. With 7 V and 700 mA DC bias condition, the amplifier has achieved 30 dB small-signal gain, 30.8 dBm 1-dB gain compression power with 24.5% power-added efficiency (PAE) and 31.3 dBm saturation power with 27.5% PAE from 14 to 17 GHz. 相似文献