XU Yue, Sharon CHEN Application Engineer 2019.09.05 • 射频匹配概述 • ADS 阻抗匹配仿真流程介绍 • 阻抗匹配仿真实验 • 实验1 匹配架构设计(Smith Chart Wizard) • 实验2 替换真实组件与有损传输线(CILD) • 实验3 匹配电路优化 • 实验4 汇入 Layout 档案 • 实验5 EM + Component 联合仿真(RFPro) • 实验6 Pre-Layout and Post-Layout 仿真比对 ቐ Pre-Layout ቊ Post-Layout • 总结 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 2 • 在通信系统中，射频信道都是不可或缺的。射频系统的性能好坏会直接决定通信质量的好坏。 • 当使用密度较高的射频模块组建射频系统时，工程师最重要的工作就是调谐各模块之间的匹配设计，从 而使系统性能最优。 • 另外，如果需要对某些组件进行设计，例如 PA、天线等射频组件，匹配也将直接影响射频组件的性能。 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 3 • 小型化趋势，组件尺寸减小。手动调谐匹配网络会花费 更多的时间。 • 频率升高，空间狭小，重复测量难以保证每次精度。 • 盲目的进行设计与Tuning，除了花费时间外，也不利于 技术经验的积累。 • From Internet RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 4 器件选型 电路设计 佈线 电路板制作 手动Tuning 超过一周 一周 器件选型 电路设计 佈线 电路板制作 /同步仿真 根据仿真结果 后手动Tuning 一周 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 0.5-2 days Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 5 • 射频匹配概述 • ADS 阻抗匹配仿真流程介绍 • 阻抗匹配仿真实验 • 实验1 匹配架构设计(Smith Chart Wizard) • 实验2 替换真实组件与有损传输线(CILD) • 实验3 匹配电路优化 • 实验4 汇入 Layout 档案 • 实验5 EM + Component 联合仿真(RFPro) • 实验6 Pre-Layout and Post-Layout 仿真比对 ቐ Pre-Layout ቊ Post-Layout • 总结 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 6 Pre-Layout Layout • Design Matching Circuit (Smith Chart Wizard) • Design Microstrip/Strip Line (CILD - Controlled Impedance Line Designer) Post-Layout .brd Allegro Import PCB Layout EM +Component Co-Simulation ODB++ Protel, PADS, … RFPro • • • • RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Select Net Set up Ports Frequency Range Add Components Lab 4 Lab 5 Lab 6 7 • 假设发射机需要获得最大功率转换效率，所需要匹配的阻抗值为 2.992+j*2.847. • 频率：2-3GHz Matching Network 2.992+j*2.847 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 8 • Help > F1 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 9 • Help > F1 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 10 • Help > F1 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 11 • 射频匹配概述 • ADS 阻抗匹配仿真流程介绍 • 阻抗匹配仿真实验 • 实验1 匹配架构设计(Smith Chart Wizard) • 实验2 替换真实组件与有损传输线(CILD) • 实验3 匹配电路优化 • 实验4 汇入 Layout 档案 • 实验5 EM + Component 联合仿真(RFPro) • 实验6 Pre-Layout and Post-Layout 仿真比对 ቐ Pre-Layout ቊ Post-Layout • 总结 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 12 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 13 Notes: • 请勿将 Unarchive 后的 Workspace 存放在中文路径下 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 14 1 创建一个新的Schematic 3 点击 Tool → Smith Chart.. Lab1_a_SmithChart 2 命名为 Lab1_a_SmithChart RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 15 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 16 若出现此提醒， 点击OK即可 1 点击”Palette” 点击Smith Chart图示， 2 并摆放至画面中 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 17 Notes: • 再次打开Smith Chart Utility • 此选项代表电路图中 smart component 与 Smith Chart Utility 的连动关系 直接点击OK RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 18 可以看到所连动的组件名称 1 输入频率 2 单击ZS* 3 输入阻抗 2.992+j*2.847 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 19 1 点击 Circles → Q… 2 输入欲匹配Q值圆之值“1.1”→ 点击OK RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 20 2 单击 ZL，开始匹配 1 (From Load to Source) RF Matching ADS Matching Flow 3 点击Build ADS Circuit，将此设计好的电路建立至电路图 RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 21 2 单击 Push Into Hierarchy 查看子电路 1 单击图示 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 22 单击 Pop Out Hierarchy 返回主电路 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 23 点击”Insert Wire”，再点击组件 2 端点，即可将组件互相连接 1 从下拉式选单中找到 “Simulation-S_Param”， 并点击 “S P” 和 ”TermG”， 将对象摆放至画面中。 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 24 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 25 Tips: How to View Smith Chart Simulation Result? 1 点击 Smith Chart 图示 2 选取S(1,1) → 点击 >>Add>> 3 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 26 Tips: Add Marker 1 点击 Insert a New Marker， 并将Marker放置在仿真出的 曲线上 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS 确认 Marker 落点在 2.4 GHz， 2 若没有，可以直接点击数字，自 行更改至 2.4 GHz Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 27 How to View Smith Chart Result 1 双击 Marker 框框 2 4 3 Tips: 点开 Zo 的下 拉式选单，选择"50“ Notes: • 匹配电路阻抗为 3.074 + j*2.599 • 与设计目标 2.992 + j*2.847相当接近 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 28 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 29 1 创建一个新的Schematic Lab2_a_CILD_Murata 2 命名为 Lab2_a_CILD_Murata RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 30 2 并接上 TermG 和 S参数仿真器 1 复制上一个 lab 所设计的子电路到新的 Schematic RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 31 Hint: How to Import Component Library in ADS? 1 在ADS主画面点击 File → Manage Libraries 3 选取组件库(Murata) 2 点击 Add Library Definition File… 4 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 32 Hint: How to check if the component library has been imported? 成功导入 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 33 1 在下拉式选单中找到"muRata Components" 2 3 双击电容，选择 组件值 与 Part Number 选择 GRM15 将电容放置至中央 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 34 1 选择 Discrete Optimize setting，以利之后优化分析 Tips: 此方框可以上下左右拉伸 2 在 Normal Value 字段选择与 lab1 设计的容值相近的电容 3 取消勾选此项 6 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 35 Tips: 单击组件，按下“Ctrl+R”，击可旋转组件 将 理想电容 置换为 muRata电容 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 36 在下拉式选单中找到“muRataLibWeb Set Up" RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 37 1 点击 Tool → Controlled Impedance Line Designer RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 38 Notes: • 如果一次优化结果与目标值不一致， 可以重复点击 “Optimize”，直至阻抗 达到目标设计 2 点击 Optimize 1 设定频率 2.4 GHz 点击 Optimize 3 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 39 1 点击 Add New Line Type… 2 输入lineType_TL1 3 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 40 2 按下齿轮，仿真 电长度设计目标：7.159、10.17、30.78 Notes: • 记住每条传输线所计算出的线长 7.15 (deg) → 58 mil 10.17 (deg) → 83 mil 30.78 (deg) → 250 mil 1 输入长度 TL1 TL3 TL2 3 观察电长度是否为自己希望设计的数值若否，则不断更改Length，重复仿真 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 41 3 选择刚才命名的LineType，并输入CILD计算的线长度 4 点选Display 为了避免板面复杂， 取消勾选这两项 1 在下拉式选单中 2 双击 LTLINE1 找到“Tlines-LineType"， 并点击单端传输线，放置中央 5 Tips: 此窗口可以上下左右拉伸 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 42 将ideal传输线全部置换为LineType的传输线 Notes: • 图中29mil长度的传输线，并非 是匹配作用，而是实际中电容 过后需要一小段传输线方便连 接或测试 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 43 How to View Smith Chart Result 阻抗已偏掉, 目标:2.992+j*2.847 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Notes: • 因实际组件具有寄生效应，因此必须对 组件进行Tuning，但有个更快的方法， 就是使用优化功能，让ADS自动帮我们 Tuning。 Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 44 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 45 Lab3_a_CILD_Murata_Opt RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 46 直接点击数字进行更改 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 47 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 48 • 常用的优化方式：Random, Gradient, Hybrid RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 49 将迭代次数更改至2000 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 50 输入 “dB(S11)” 下拉式选单选择 “SP1” 输入 "-15" 下拉式选单选择 “<” RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 51 输入 “dB(S22)” 下拉式选单选择 “SP1” 下拉式选单选择 “<” 输入 "-15" RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 52 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 53 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 54 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 55 Tips: How to View S-Parameter Result? 1 3 4 2 5 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 56 How to View Smith Chart Result Notes: • 此时输入阻抗为 2.992 - j*2.847 ohm， 反射越小，代表从输入端看进去的阻抗 越接近 2.992 + j*2.847 ohm。 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 57 Before Optimization: After Optimization: RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 58 Notes: • 此步骤为最后一个Lab时使用， 另存完毕后即可关闭窗口 Lab6_a_Correlation RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 59 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 60 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 61 1 4 下拉式选单选择 “ODB++ File Format” 5 2 3 不用解压缩，可以直接汇入 7 6 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 62 Notes: • 这里的迭层红色字体处有误 我们将在之 后的步骤修改。 • 此时先点击 OK 按键，并在弹出的 Status 窗口点击 OK，PCB 导入工作即 可完成。 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 63 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 64 3 将 Thickness 更改为20 mil 打开 1 PCB_odb.subst 2 单击介质层 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 65 1 2 5 找到 Rogers_RO4350 3 并单击选取 Notes: • 直接在键盘按下 ”R” 会快 速找到R开头的材料 RF Matching ADS Matching Flow 4 RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 66 点击存档， 2 即完成Stack-up的修改 RF Matching ADS Matching Flow 1 在下拉式选单中选择 Rogers_RO4350 RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 67 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 68 2 点击 “Hide All Layers”，仅显示 top 层 1 打开在 PCB_odb文 件夹之下的 layout Tips: • 鼠标滚轮往自己滑，为”缩小” Layout 界面，反之。 • 按住鼠标右键，可以”移动” Layout。 • 鼠标左键为”选取” RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 69 按照讲义顺序，依序 1 加入六个端口 RF Matching ADS Matching Flow Notes: • 当箭头显示的颜色和当下的Layer的颜 色不同时，代表Port会被加到其他层。 • 这一排工具栏能够帮助我们对准，选 取右边数来第二项。 Port 2 Port 5 Port 1 Port 4 Port 3 Port 6 RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 70 1 点击 “Port Editor” 2 RF Matching ADS Matching Flow 选取 P2, P3 拖曳至 P1 下方的 Gnd， 代表 Port 2 和 Port 3 是 Port 1 的 reference ground RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 71 存档 2 3 选取 P5, P6 拖曳至 P4 下方的 Gnd， 代表 Port 5 和 Port 6 是 Port 4 的 reference ground RF Matching ADS Matching Flow 完成后直接关闭 “Port Editor” 窗口 1 RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 72 开启 RFPro，在弹出的设置窗口检查 Substrate设置是否正确，点击OK RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 73 • RFPro 仿真平台由 ADS Layout 接口进入，在独立的接口中完成电磁场仿真所需的全部设置，显示三维结构和 电磁场分析结果，查看和输出仿真结果，快速进行 Circuit + Layout 同步仿真分析。 ✓ Layout RF Matching ADS Matching Flow ✓ Solver RF Basic: Efficient Impedance Matching with ADS ✓ Integration Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 74 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 75 通过Ctrl键选择P1与P4，拖拽到 Full EM Analysis下的Ports处 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 76 通过Ctrl键选择C1 C2 C3，拖拽到Full EM Analysis下的Component Models处 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 77 2 1 点击 C1 → 右键单 击选择 Properties RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key 点击 Add → 选择 Model DB Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 78 1 在料号栏中输入：GRM1555C2A4R7CA01 选取下方出现的搜寻结果 3 2 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 79 检查组件是否有误，无误点击Done完成设定 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 80 Notes: • 重复前文步骤，完成C2 C3设定 • C2料号：GRM1555C2A3R2BA01 • C3料号：GRM1555C1H1R3BA01 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 81 2 将频率范围设定为 2 ~ 3GHz 惊叹号消失，代 表组件设定完成 1 双击 “Options..” 3 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 82 查看仿真状态，显示 Completed 代表仿真完成 双击 “Run”， 进行仿真 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 83 2 下拉式选单选择 Smith Chart 双击 3 单击矩阵左上角， 1 “S-Parameters” RF Matching 显示 S(1,1) 的仿真结果 ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 84 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 85 1 点击 File → Save As… 2 存档为“Lab5_RFPro" RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 3 Lab 3 Lab 4 Lab 5 Lab 6 86 2 将 TermG1 改为50 ohm RF Matching ADS Matching Flow Run Simulation 1 RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 87 How to View Smith Chart Result • • 此下拉式选单可以选择先 前的仿真结果 分别把 Lab5_RFPro 和 Lab1 的 S(1,1) 结果叫出 RF Matching ADS Matching Flow — Pre-Layout: CILD+Murata（红色） — Post-Layout: RFPro电磁分析（蓝色） — 代表我们希望匹配的阻抗2.992+j*2.847 RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 88 • 射频匹配概述 • ADS 阻抗匹配仿真流程介绍 • 阻抗匹配仿真实验 • 实验1 匹配架构设计(Smith Chart Wizard) • 实验2 替换真实组件与有损传输线(CILD) • 实验3 匹配电路优化 • 实验4 汇入 Layout 档案 • 实验5 EM + Component 联合仿真(RFPro) • 实验6 Pre-Layout and Post-Layout 仿真比对 ቐ Pre-Layout ቊ Post-Layout • 总结 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 89 整个实验完成了射频匹配从 Pre-Layout 到 Post-Layout 的全部流程 1. 在 Pre-Layout，我们学到 Smith Chart，CILD 等小工具的使用。 2. 在 Post-Layout，了解 ADS 如何导入 PCB File，以及 RFPro 如何快速完成对 Circuit + Layout 的联合仿真。 3. 最后，透过 Correlation 的比对，验证 Pre-Layout 和 Post-Layout 的结果是相当 接近的，虽然 Pre-Layout 不能取代 Post-Layout，但在前期有效的评估，可以帮 助节省在系统设计初期组件选择的时间，避免多次迭代。 RF Matching ADS Matching Flow RF Basic: Efficient Impedance Matching with ADS Hot Key Lab 1 Lab 2 Lab 3 Lab 4 Lab 5 Lab 6 90
0
advertisement
Download
advertisement
Add this document to collection(s)
You can add this document to your study collection(s)
Sign in Available only to authorized usersAdd this document to saved
You can add this document to your saved list
Sign in Available only to authorized users