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The Team RF "μWaveRiders" blog series is a showcase for Cadence AWR RF products. Monthly topics will vary between Cadence AWR Design Environment release highlights, feature videos, Cadence Academic Network news (including the former AWR University Program), as well as software tips, tricks, customization, and feature spotlights.
The AWR Design Environment platform provides RF/microwave engineers with integrated high-frequency circuit (Microwave Office), system (Visual System Simulator), and EM (AXIEM 3D planar/Analyst 3D FEM) simulation technologies and design automation to develop physically realizable electronics ready for manufacturing.
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The sixth in the series of AWR Design Environment Tips and Tricks, this blog highlights optimization of layout creation and management in Cadence Microwave Office software to speed design layout.
A layout is a view of the physical representation of a circuit, in which each component of the schematic is represented by a layout cell. In the object-oriented Microwave Office software, layouts are tightly integrated with the schematics and EM structures that they represent, and are simply another view of the same circuits. Any modifications to a schematic or EM structure are automatically and instantly reflected in their corresponding layouts.
These keystrokes are common to layout operations in Microwave Office.
Coordinate Entry: While drawing a rectangle, polygon, or path, or while dragging an object or placing a cell, press Tab or theSpace bar to specify a location using relative (select Rel) or absolute coordinates in the Enter Coordinates dialog box. You can also enter (mag, angle) by selecting Polar.
If you select Snap, the cursor moves to the closest grid location to start drawing. Coordinate entry can be mixed with normal mouse editing. For example, when drawing a polygon, you can add some of the points with the mouse and other points using coordinate entry.
Choose Draw > Grid Snap to toggle on/off the grid snap. When the grid snap is on, the drawing tools snap to the grid. Editing operations (such as moving a shape) also use the grid snap. For example, if the grid snap is set to 5 um, when moving an object it can only be moved in multiples of 5 um. You can dynamically change the snap grid by fixed multiples by selecting the snap multiple from the Grid Spacing button on the toolbar. For example, if the grid snap is 5 um and the Grid Spacing button specifies 2x, the grid snap is 10 um for the layout.
Snap shape: Press Ctrl to snap the mouse to endpoints, midpoints, and edges during dragging, moving, stretching, and measuring operations.
Turn off grid: Choose View > Snapping Grid to turn off the grid in the active window so you can copy and paste objects or take a screenshot without the grid.
Select layout objects using any of these methods:
Restrict items for selection by right-clicking anywhere in a layout (with nothing selected) and choosing Restrict Selection to display the Restrict Selection dialog box to turn on or off different items for selection.
Measure distances using any of these methods:
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