:class:`CPW`
============


.. py:class:: pyedb.libraries.rf_libraries.base_functions.CPW(edb_cell: Optional[pyedb.Edb] = None, length: Union[str, float] = 0.001, width: Union[str, float] = 0.0003, gap: Union[str, float] = 0.0001, layer: str = 'TOP', ground_net: str = 'GND', ground_width: float = 0.0001, ground_layer: str = 'GND', net: str = 'SIG', substrate: pyedb.libraries.common.Substrate = Substrate(0.0001, 4.4, 0.02, 'SUB', (0.001, 0.001)))

   
   Coplanar waveguide with side ground planes.


   :Parameters:

       **length** : :class:`python:float`, :obj:`default` 1 :obj:`mm`
           Physical length of the line.

       **width** : :class:`python:float`, :obj:`default` 0.3 :obj:`mm`
           Width of the centre conductor.

       **gap** : :class:`python:float`, :obj:`default` 0.1 :obj:`mm`
           Gap between centre conductor and ground planes.

       **layer** : :class:`python:str`, :obj:`default` "TOP"
           Layer on which the CPW is drawn.

       **ground_net** : :class:`python:str`, :obj:`default` "GND"
           Net name for the ground planes.

       **ground_width** : :class:`python:float`, :obj:`default` 0.1 :obj:`mm`
           Width of the side ground strips.

       **ground_layer** : :class:`python:str`, :obj:`default` "GND"
           Layer for the underlying ground plane.

       **net** : :class:`python:str`, :obj:`default` "SIG"
           Net name for the centre conductor.

       **substrate** : :obj:`Substrate`, :obj:`default` 100 µm :obj:`FR4`
           Substrate definition.











   .. rubric:: Examples

   >>> cpw = CPW(length=5e-3, width=0.4e-3, gap=0.2e-3)
   >>> edb = Edb("cpw.aedb")
   >>> cpw._pedb = edb
   >>> cpw.create()
   >>> f"{cpw.analytical_z0:.1f} Ω"
   '46.5 Ω'



   ..
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.. py:currentmodule:: CPW

Overview
--------

.. tab-set::



   .. tab-item:: Methods

      .. list-table::
          :header-rows: 0
          :widths: auto

          * - :py:attr:`~create`
            - Draw the centre strip, side grounds and bottom ground plane.


   .. tab-item:: Properties

      .. list-table::
          :header-rows: 0
          :widths: auto

          * - :py:attr:`~analytical_z0`
            - Characteristic impedance obtained with the conformal-mapping


   .. tab-item:: Attributes

      .. list-table::
          :header-rows: 0
          :widths: auto

          * - :py:attr:`~length`
            - 
          * - :py:attr:`~width`
            - 
          * - :py:attr:`~gap`
            - 
          * - :py:attr:`~layer`
            - 
          * - :py:attr:`~ground_net`
            - 
          * - :py:attr:`~ground_width`
            - 
          * - :py:attr:`~ground_layer`
            - 
          * - :py:attr:`~net`
            - 
          * - :py:attr:`~substrate`
            - 






Import detail
-------------

.. code-block:: python

    from pyedb.libraries.rf_libraries.base_functions import CPW

Property detail
---------------

.. py:property:: analytical_z0
   :type: float


   
   Characteristic impedance obtained with the conformal-mapping
   formula for CPW.



   :Returns:

       :class:`python:float`
           Z0 in Ohm.













   ..
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Attribute detail
----------------

.. py:attribute:: length

.. py:attribute:: width

.. py:attribute:: gap

.. py:attribute:: layer
   :value: 'TOP'


.. py:attribute:: ground_net
   :value: 'GND'


.. py:attribute:: ground_width
   :value: 0.0001


.. py:attribute:: ground_layer
   :value: 'GND'


.. py:attribute:: net
   :value: 'SIG'


.. py:attribute:: substrate



Method detail
-------------

.. py:method:: create() -> bool

   
   Draw the centre strip, side grounds and bottom ground plane.



   :Returns:

       :ref:`bool <python:bltin-boolean-values>`
           True on success.













   ..
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