Microwave absorber
AssigneeThe Boeing Company
InventorLloyd W. Wren
Life of this patent
Estimating the term…
Abstract
A microwave absorber for coupling and absorbing radio frequency energy used for communication, navigation and radar systems. The structure has a conformal energy receiving surface for receipt on reflecting surfaces or surfaces supporting unwanted surface waves. The microwave absorber provides an effective means for antenna radiation pattern control, and reduction of antenna to antenna coupling caused by reflections or surface waves.
Claims17
A microwave absorber for a reflecting surface, the absorber coupling and absorbing radio frequency energy at different angles of incidence, the absorber including:
- an energy receiving surface adapted for receipt on the reflecting surface;
- a first transmission line wall mounted on the receiving surface and having a lossy wall covering;
- and
- a second transmission line wall mounted on the receiving surface and having a lossy wall covering, the second transmission line wall disposed in a spaced relationship from the first transmission line wall, the receiving surface and the first and second wall forming an open channel configuration.
A microwave absorber for a reflecting surface, the absorber coupling and absorbing radio frequency energy at different angles of incidence, the absorber including:
- an electrically conductive energy receiving surface having a lossy surface covering and adapted for receipt on the reflecting surface;
- a first electrically conductive transmission line wall mounted on the energy receiving surface and having a lossy wall covering;
- and
- a second electrically conductive transmission line wall mounted on the energy receiving surface and having a lossy wall covering, the second transmission line wall disposed in a spaced relationship from the first transmission line wall, the energy receiving surface and the first and second wall forming an open channel configuration.
A microwave absorber for a reflecting surface, the absorber coupling and absorbing radio frequency energy at different angles of incidence, the absorber including:
- an energy receiving surface adapted for receipt on the reflecting surface;
- a first transmission line conductor mounted above the receiving surface;
- and
- a second transmission line conductor mounted above the receiving surface, the second transmission line conductor disposed in a spaced relationship from the first transmission line conductor and the receiving surface, the energy receiving surface and the first and second wall forming an open channel configuration and the transmission line conductors are covered with a lossy material.
A microwave absorber for a reflecting surface, the absorber coupling and absorbing radio frequency energy at different angles of incidence, the absorber including;
- an energy receiving surface adapted for receipt on the reflecting surface;
- a first transmission conducting line wall mounted on the receiving surface;
- and
- a second transmission conducting line wall mounted on the receiving surface, the second transmission line wall disposed in a spaced relationship from the first transmission line wall, the receiving surface and the first and second wall forming an open channel configuration and the transmission line conductors are covered with a lossy material.
Dependencies are inferred from the claim text.