StubsMicrostrip open radial stub
This type of block implements a microstrip radial line stub (1-port). The stub consists of a strip section terminated by a sector shaped radial conductor patch. The following figure illustrates the layout.
The reference plane is marked RP1 in the above diagram.
The analysis accuracy is best for high dielectric constants and for strip characteristic impedance values ≥ 50 Ω.
The implemented model may consider conductor losses as well as dielectric losses.
The block is characterized by the properties listed below. To modify the values, use the Block Properties – Parameters dialog box. The common substrate properties are defined by a Microstrip Reference Block.
|
Width |
Strip width |
|
Length |
Length of stub |
|
Sector Angle |
Angle of sector (degrees), 60° ≤ Sector Angle ≤ 180° |
|
Sector Radius |
Radius of the sector. The centre of the sector has to fall in the straight strip section. The aperture a of the sector is equal to the strip width. The side length XA of the sector is XA = Sector Radius - ½ Width / sin(½ Sector Angle). |
|
Layer |
Index of the reference block layer that is used by the metallization of this block |
The properties listed above and the substrate properties of the reference block define the electrical behaviour of the block. The layout view uses another set of layout properties. These properties define the position of the block in the layout view. The electrical behaviour of the block does not depend on these properties.
See also
Block Overview, Microstrip Reference Block, Layout Properties