User manual CADENCE DESIGN SYSTEMS ALLEGRO PCB RF OPTION DATASHEET

[. . . ] RF/microwave modules are different from digital circuits in many respects. For example, distributed RF components are usually parameterized with widths and lengths; RF circuits have symmetric structures, with many large irregular shapes used for RF layout. Designers need a feature-rich, efficient, reliable, and easy-to-use mixed-signal PCB design tool to handle all of these design needs. The Cadence® Allegro® PCB RF Option is a mixed-signal design environment, from schematic to layout with backannotation, proven to increase RF design productivity up to 50%. [. . . ] The Allegro PCB RF Option also supports different design flows working with RF design and analysis tools from Agilent. It provides a bi-directional interface for design data exchange (partial or complete), a discrete component translator, and import of schematics from Agilent ADS. ·ConvertAllegroconnectlines(clines)to transmission line components ·ChamfercornersofaRFtrace ·Variable/expressiondisplayandmodification ·ReplicateRFcircuitsquickly, including flip mode for symmetrical/balanced circuits FLEXIBLE SHAPE EDITOR (FSE) The FSE module includes a robust set of editing functionality for line, shape edge, vertex, or whole shapes. It enhances the existing Allegro PCB Editor line/shape editing functions; it provides powerful and flexible functions for copper editing, adjustment, and resizing. This capability increases the flexibility to modify RF shapes and is particularly helpful for cases in which irregular shapes are used heavily, such as power amplifier circuits and filter circuits. Figure 1: The Allegro PCB RF Option supports creation and editing of complex RF components BENEFITS · ShortenstimetointegrateRFcircuitson a mixed-signal design · SeamlesslyintegratedwithAllegro DE-HDL and Allegro PCB Editor · ProvidesacompleteRF/microwave design solution using a unified design environment and database · Improvesdesignproductivityand reduces design time for complex RF shape creation, RF trace routing, and via arrays · Enablesdesignerstousethesame front-to-back and backannotation flow for both digital and RF/mixed-signal designs · IntegrateswithAgilentADSRFdesign and analysis environment · Shortenstimetoupdateschematics through layout-driven design for RF circuits RF LAYOUT The Allegro PCB RF Option provides a powerful and flexible set of manual and interactive placement, routing, and editing tools within Allegro PCB Editor. Since the Allegro PCB RF Option understands RF etch elements, it provides a very easy mechanism for the creation, placement, and connection of RF components. It easily routes an RF trace with different bend styles such as optimally mitered RF bend, curved, or square. It can also connect two points by a direct RF trace or a meander. Other RF layout features include: · Move, rotate, flip, andcopyindividual RF components or a selected set of objects (shape, cline, etch elements, vias) ·Groupcopy, flip, androtateRF components or a selected set of objects ·PushRFcomponentsoragroupofetch objects from one layer to another ·ChangeRFparametersandre-generate RF etch components ·InsertanRFcomponentduringtheRF routing process ·ElectricalcalculationanddisplayforRF trace ·DefineacustomRFcomponent ·ConvertRFcomponentstoshapes ALLEGRO DFI FROM AGILENT ADS The Advanced Design System (ADS) from Agilent includes a design flow integration (DFI) for Allegro technology that allows import of traces, vias, lumped elements, bonds wires, and ball grid arrays for analysis using the 3D electromagnetic field simulators in ADS. Besides the multi-port frequency response output data (S-parameters), ADS provides 3D visualization tools for geometry, fields, and currents. This insight into the physical behavior of internal nodes lets engineers adjust the design to meet performance goals. RF SCHEMATIC IMPORT Allegro DE-HDL allows engineers to import RF circuits from the Agilent ADS design environment to integrate with digital/analog portions of the mixed-signal PCB design. The schematic import uses a wizard-driven flow, simplifying the process of symbol creation and schematic update. All parametric RF components will be mapped to Allegro RF libraries automatically. A packaged part can be mapped to map to an existing library using the Universal Component Browser or an FEATURES PARAMETERIZED ETCH ELEMENTS The Allegro PCB RF Option enables creation and editing of RF etch elements that are parameterized to enable their use in RF circuit design creation. There are more than 600 such parameterized elements, from Microstrip to Stripline to lumped components. www. cadence. com ALLEGRO PCB RF OPTION 2 DISCRETE COMPONENTS LIBRARY TRANSLATION The Allegro PCB RF Option allows users to translate discrete, packaged parts from ADS to the Allegro parts library: schematic symbols and package footprints. The schematic and layout files are handled at the same time. Offset Via Array Circular Via Array OPERATING SYSTEM SUPPORT ALLEGRO PLATFORM TECHNOLOGY: Cline Via Array Foundary Via Array ·SunSolaris ·Linux ·IBMAIX Allegro symbol can be created using the information from the imported design. It supports variables/expressions and hierarchical structures. Figure 2: Via arrays easily instantiated around user-selected group of objects BI-DIRECTIONAL INTERFACE WITH ADS LAYOUT The bi-directional physical interface between Allegro PCB Editor and Agilent ADS enables designers to implement their RF layout designs either in Allegro PCB Editor or in the ADS environment. [. . . ] This allows RF engineers to create elements in layout, model them using Momentum, and then validate them through simulation using ADS. Automating the creation of schematics for added RF elements reduces the time it takes to update schematics once the RF circuit is validated. Agilent ADS Momentum + Simulation Figure 3: The Allegro PCB RF Option supports various RF design flows with the Agilent ADS environment www. cadence. com ALLEGRO PCB RF OPTION 3 FOR MORE INFORMATION Contact Cadence sales at 1. 800. 746. 6223 or visit www. cadence. com for additional information. To locate a Cadence sales office or Cadence Channel Partner in your area, visit www. cadence. com/contact_us. For more information contact Cadence sales at: +1. 408. 943. 1234 or log on to: www. cadence. com/ contact_us © 2009 Cadence Design Systems, Inc. [. . . ]