5W ISM波段InGaP/GaAs HBT功率放大器MMIC

通过分析InGaP/GsAsHBT器件的热学和电学特点,结合HBT大功率放大器芯片在技术性能、稳定性、可靠性及尺寸等方面的要求,通过优化设计HBT功率器件单元和匹配电路,开发了一个大功率、高效率、小尺寸的ISM波段功率放大器单片集成电路。该三级放大器的各级器件单元的发射极面积分别为320μm2,1280μm2,5760μm2,芯片内部包括了输入、输出50Ω匹配电路,面积仅为1.9mm×2.1mm。放大器采用5V单电源供电,在2.4～2.5GHz频率范围内线性增益为27dB,2dB增益压缩点输出饱和功率达到37dBm,功率附加效率为46%。     

2.4GHz全集成CMOS Doherty功率放大器

采用0.18μm CMOS工艺设计并制作了一个2.4 GHz全集成CMOS Doherty功率放大器.着重考虑了片上螺旋电感的回流路径对电感模型的影响,并在设计中使用了一种新颖的螺旋电感版图结构来避免回流路径的影响.实测结果表明该功率放大器增益达到16dB,1dB压缩点为20.5dBm,峰值输出功率和对应功率附加效率分别为21.2dBm和20.4％,整个芯片面积为2.8mm×1.7mm.     

Ka频段PHEMT 1W功率单片放大器

设计制作了Ka频段高输出功率的单片功率放大器.基于河北半导体研究所的0.25μm栅长的75mm GaAsPHEMT工艺制作的三级功率放大器,芯片尺寸为19.25mm2(3.5mm×5.5mm).在32.5～35.5GHz的频率范围内,小信号线性增益大于16dB,带内平均1dB增益压缩点输出功率为29.8dBm,最大饱和输出功率为31dBm.     

Ka频段PHEMT 1W功率单片放大器

设计制作了Ka频段高输出功率的单片功率放大器.基于河北半导体研究所的0.25μm栅长的75mm GaAsPHEMT工艺制作的三级功率放大器,芯片尺寸为19.25mm2(3.5mm×5.5mm).在32.5～35.5GHz的频率范围内,小信号线性增益大于16dB,带内平均1dB增益压缩点输出功率为29.8dBm,最大饱和输出功率为31dBm.     

毫米波高性能收发多功能芯片

利用0.15μm GaAs PHEMT工艺,研制了一款集成功率放大器和低噪声放大器的毫米波多功能单片。发射支路功率放大器采用三级放大拓扑结构,在32~36GHz内,在6V工作电压下,线性增益23dB,增益平坦度优于±0.75dB,输入/输出驻波小于1.3,饱和输出功率30dBm,功率附加效率约30%。接收支路低噪声放大器采用三级放大拓扑结构,在5V、30mA工作电压下,在32~37GHz内,线性增益23.5dB,增益平坦度优于±1dB,噪声系数小于2.5dB,1dB压缩输出功率大于6dBm。该芯片面积为3.67mm×3.13mm。     

Ku波段20W GaN功率MMIC

报道了一款采用三级放大结构的Ku波段高效率GaN功率放大器芯片。放大器设计中通过电路布局优化改善功放芯片内部相位一致性,提高末级晶胞的合成效率,最终实现整个放大器功率及效率的提升。经匹配优化后放大器在14.6~17.0GHz频带内脉冲输出功率大于20 W,功率附加效率大于36%,最高39%。功率放大器芯片采用0.25μm GaN HEMT 101.6mm(4英寸)圆片工艺制造,芯片尺寸为2.3mm×1.9mm。     

一种高线性宽带功率合成的射频功率放大器北大核心

针对5G通信微基站,提出一种基于GaAs异质结双极晶体管(HBT)工艺,芯片面积为1.3 mm×1.4 mm的高线性宽带宽的射频功率放大器。该放大器采用了异相功率合成方式和J类输出匹配的方法,在两路功率放大器的输入输出端引入了90°相移以及J类模式确定最佳负载阻抗,以此实现高线性宽带宽的特性。在5 V电源和2.85 V偏置电压下,室温条件下测试结果表明,该功率放大器在2~3 GHz频带内,小信号增益为36±0.5 dB。然而在2.4~2.8 GHz频带内,该功率合成结构的功率放大器拥有饱和输出功率大于36 dBm,功率附加效率大于38%。在5G-NR,带宽100 MHz和4G-LTE、带宽20 MHz的调制信号下,在2.4~2.8 GHz工作频带测试,放大器的输出功率为22 dBm,邻近信道功率比(ACPR)约为-43 dBc。     

毫米波单片平衡放大器

研制了一款毫米波(26～40 GHz)平衡式单片放大器芯片。放大器基于0. 15μm GaAs pHEMT工艺,实现了毫米波全频段(26～40 GHz)增益放大。采用Lange桥平衡结构,使放大器较于单边放大器有更好的输入输出驻波比,更大的1 dB增益压缩输出功率。设计时结合pHEM T晶体管小信号和大信号模型,采用自偏和RLC并联负反馈结构,在减小芯片面积的同时提高了电路的稳定性。放大器芯片尺寸仅1. 6 mm×1. 6 mm,在工作频率26～40 GHz内,测试结果表明:输入、输出驻波比小于1. 5,增益在11 dB附近,平坦度在±0. 5 dB,1 dB增益压缩输出功率大于11 dBm。测试结果验证了设计的正确性。     

K波段收发多功能GaAs MMIC芯片

介绍了一种基于0.15μm GaAs pHEMT功率工艺的K波段收发一体多功能芯片。该多功能芯片包含了功率放大器和低噪声放大器及收发开关。接收支路19.6~23.0GHz内增益大于23dB,增益平坦度为±0.2dB,输入输出驻波均小于1.8,噪声低于3.5dB;发射支路21~23GHz内输出驻波小于2.2,输入驻波小于2,增益大于25.6dB。在22GHz时饱和输出功率为23.3dBm,饱和电流170mA,效率达到25.2%。该多功能芯片接收/发射由单刀双掷开关控制。芯片尺寸为:4.1mm×2.75mm×0.05mm。     

一种大功率高效率的Ku波段SiGe硅功率放大器设计

采用SiGe BiCMOS工艺设计了一款大功率高效率硅基功率放大器芯片,用于驱动现有大功率GaN功率放大器芯片,满足相控阵雷达的低成本需求。该硅基功率放大器通过和低噪声放大器、驱动放大器、数控移相器、数控衰减器、单刀双掷开关、电源管理以及数字逻辑单元等硅基电路进一步集成,实现了一片式高集成度硅基幅相多功能芯片,从而降低了前端收发组件的尺寸和成本。在硅基功率放大器设计中,结合Stack结构、变压器耦合结构和有源偏置结构,开展电路设计及优化,提高了放大器的输出功率和效率。测试结果表明:研制的硅基功率放大器在Ku波段f_1~f_2(3GHz带宽)频带内,实现了小信号增益31dB;在-3dBm输入功率条件下,实现发射功率21.5dBm、功率附加效率(PAE)25%等技术指标。集成功率放大器的幅相多功能芯片在f_1~f_2(3GHz带宽)频带内,实现了发射通道增益24dB;在5dBm输入功率条件下发射功率21.5dBm、功率附加效率(PAE)23%等技术指标。     

基于GaAs PHEMT工艺的60~90GHz功率放大器MMIC

研制了一款60~90 GHz功率放大器单片微波集成电路(MMIC),该MMIC采用平衡式放大结构,在较宽的频带内获得了平坦的增益、较高的输出功率及良好的输入输出驻波比(VSWR)。采用GaAs赝配高电子迁移率晶体管(PHEMT)标准工艺进行了流片,在片测试结果表明,在栅极电压为-0.3 V、漏极电压为+3 V、频率为60~90 GHz时,功率放大器MMIC的小信号增益大于13 dB,在71~76 GHz和81~86 GHz典型应用频段,功率放大器的小信号增益均大于15 dB。载体测试结果表明,栅极电压为-0.3 V、漏极电压为+3 V、频率为60~90 GHz时,该功率放大器MMIC饱和输出功率大于17.5 dBm,在71~76 GHz和81~86 GHz典型应用频段,其饱和输出功率可达到20 dBm。该功率放大器MMIC尺寸为5.25 mm×2.10 mm。     

A Ka-band 22 dBm GaN amplifier MMIC

A Ka-band GaN amplifier MMIC has been designed in CPW technology,and fabricated with a domestic GaN epitaxial wafer and process.This is,to the best of our knowledge,the first demonstration of domestic Kaband GaN amplifier MMICs.The single stage CPW MMIC utilizes an AlGaN/GaN HEMT with a gate-length of 0.25μm and a gate-width of 2×75μm.Under V_ds=10 V,continuous-wave operating conditions,the amplifier has a 1.5 GHz operating bandwidth.It exhibits a linear gain of 6.3 dB,a maximum output power of 22 dBm and a peak PAE of 9.5%at 26.5 GHz.The output power density of the AlGaN/GaN HEMT in the MMIC reaches 1 W/mm at Ka-band under the condition of V_ds=10 V.     

A 77 GHz mHEMT MMIC Chip Set for Automotive Radar Systems

A monolithic microwave integrated circuit (MMIC) chip set consisting of a power amplifier, a driver amplifier, and a frequency doubler has been developed for automotive radar systems at 77 GHz. The chip set was fabricated using a 0.15 µm gate‐length InGaAs/InAlAs/GaAs metamorphic high electron mobility transistor (mHEMT) process based on a 4‐inch substrate. The power amplifier demonstrated a measured small signal gain of over 20 dB from 76 to 77 GHz with 15.5 dBm output power. The chip size is 2 mm × 2 mm. The driver amplifier exhibited a gain of 23 dB over a 76 to 77 GHz band with an output power of 13 dBm. The chip size is 2.1 mm × 2 mm. The frequency doubler achieved an output power of –6 dBm at 76.5 GHz with a conversion gain of ?16 dB for an input power of 10 dBm and a 38.25 GHz input frequency. The chip size is 1.2 mm × 1.2 mm. This MMIC chip set is suitable for the 77 GHz automotive radar systems and related applications in a W‐band.     

Ku-Band Power Amplifier MMIC Chipset with On-Chip Active Gate Bias Circuit

We propose a Ku-band driver and high-power amplifier monolithic microwave integrated circuits (MMICs) employing a compensating gate bias circuit using a commercial 0.5 μm GaAs pHEMT technology. The integrated gate bias circuit provides compensation for the threshold voltage and temperature variations as well as independence of the supply voltage variations. A fabricated two-stage Ku-band driver amplifier MMIC exhibits a typical output power of 30.5 dBm and power-added efficiency (PAE) of 37% over a 13.5 GHz to 15.0 GHz frequency band, while a fabricated three-stage Ku-band high-power amplifier MMIC exhibits a maximum saturated output power of 39.25 dBm (8.4 W) and PAE of 22.7% at 14.5 GHz.     

Design of 20-44 GHz broadband doubler MMIC

This paper presents the design and performance of a broadband millimeter-wave frequency doubler MMIC using active 0.15 μm GaAs PHEMT and operating at output frequencies from 20 to 44 GHz. This chip is composed of a single ended-into differential-out active Balun, balanced FETs in push-push configuration, and a distributed amplifier. The MMIC doubler exhibits more than 4 dB conversion gain with 12 dBm of output power, and the fundamental frequency suppression is typically -20 dBc up to 44 GHz. The MMIC works at VDD = 3.5 V, VSS = -3.5 V, Id = 200 mA and the chip size is 1.5 ×1.8 mm2.     

A 77-GHz MMIC power amplifier for automotive radar applications

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.     

A 77-100 GHz power amplifier using 0.1-μm GaAs PHEMT technology

A wideband MMIC power amplifier at W-band is reported in this letter. The four-stage MMIC, developed using 0.1 μm GaAs pseudomorphic HEMT (PHEMT) technology, demonstrated a flat small signal gain of 12.4±2 dB with a minimum saturated output power (Psat) of 14.2 dBm from 77 to 100 GHz. The typical Psat is better by 16.3 dBm with a flatness of 0.4 dB and the maximum power added efficiency is 6% between 77 and 92 GHz. This result shows that the amplifier delivers output power density of about 470 mW/mm with a total gate output periphery of 100 μm. As far as we know, it is nearly the best power density performance ever published from a single ended GaAs-based PHEMT MMIC at this frequency band.     

A Cool, Sub-0.2 dB Noise Figure GaN HEMT Power Amplifier With 2-Watt Output Power

This paper reports on a S-, C-band low-noise power amplifier (LNPA) which achieves a sub-0.2 dB noise figure (NF) over a multi-octave band and a saturated output power (Psat) of 2 W at a cool temperature of -30degC . The GaN MMIC is based on a 0.2 mum AlGaN/GaN-SiC HEMT technology with an f_T ~ 75 GHz. At a cool temperature of -30degC and a power bias of 15 V-400 mA, the MMIC achieves 0.25-0.45 dB average NF over a 2-8 GHz band and a linear P_1dB of 32.8 dBm ( ~ 2 W) with 25% power-added efficiency (PAE). At a medium bias of 12 V-200 mA, the amplifier achieves 0.1-0.2 dB average NF across the same band and a P_1dB of 32.2 dBm (1.66 W) with 35% PAE. The corresponding saturated output power is greater than 2 W. At a low noise bias of 5 V-200 mA, a remarkable 0.05-0.15 dB average NF is achieved with a P_1dB > 24 dBm and PAE ~ 33%. These results are believed to be the lowest NF ever reported for a multi-octave fully matched MMIC amplifier capable of > 2 W of output power.