page_title: E-plane and H-plane
section_title: Illustrations
hierarchical_section_title: E-plane and H-plane / Illustrations
caption_attribution_description: This diagram shows the E and H Planes for a horizontally polarized yagi antenna. Note that the E-Plane is horizontal and H-Plane is vertical.
context_page_description: The E-plane and H-plane are reference planes for linearly polarized waveguides, antennas and other microwave devices.
  In waveguide systems, as in the electric circuits, it is often desirable to be able to split the circuit power into two or more fractions. In a waveguide system, an element called a junction is used for power division.
  In a low frequency electrical network, it is possible to combine circuit elements in series or in parallel, thereby dividing the source power among several circuit components.
  In microwave circuits, a waveguide with three independent ports is called a TEE junction. The output of E-Plane Tee is 180° out of phase where the output of H-plane Tee is in phase.
caption: Diagram showing the relationship between the E and H planes for a horizontally polarized directional yagi antenna
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