Compact waveguide load
a load and waveguide technology, applied in waveguides, antennas, electrical equipment, etc., can solve the problems of water cooling, load heat to unacceptable temperatures, power dissipation within the load can present problems, etc., to achieve the effect of improving the efficiency of water cooling, cost, complexity and weigh
Active Publication Date: 2011-03-31
L3 TECH INC
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Benefits of technology
The patent describes a way to create a small waveguide load. This is useful because it allows for a more compact and efficient way to connect to a waveguide. The load is made from material that absorbs electromagnetic waves. The design is customized to match the impedance of the waveguide over a specific range of frequencies. This makes it easier to connect to the waveguide and minimizes signal loss. Overall, the invention provides a way to make a compact and efficient connection to a waveguide.
Problems solved by technology
Because the incident electromagnetic energy is converted into heat, power dissipation within the load can present problems.
Typically, the loss material is a relatively poor conductor of heat, thus high power levels or long irradiation times can cause the load to heat to unacceptable temperatures.
Water cooling adds cost, complexity, and weight, and is undesirable in some applications.
Reflected energy can, for example, cause damage to electronic components or result in degradation in the performance of the radio frequency system.
Unfortunately, typical loads are relatively large, extending several wavelengths along the waveguide.
Method used
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[0023]Reference will now be made to the exemplary embodiments illustrated in the drawings, and specific language will be used herein to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended. Alterations and further modifications of the inventive features illustrated herein, and additional applications of the principles of the inventions as illustrated herein, which would occur to one skilled in the relevant art and having possession of this disclosure, are to be considered within the scope of the invention.
[0024]FIGS. 1-3 illustrate a compact waveguide integrated load in accordance with some embodiments of the invention. The compact waveguide integrated load 100 is constructed in a longitudinally extending waveguide 102, for example a rectangular waveguide as shown. The waveguide includes a closed end 104 and an open end 106. Although shown here in the form of a rectangular waveguide, other waveguide shapes can als...
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Abstract
A compact integrated waveguide load has a load section disposed within an interior region of the waveguide proximate to a closed end of the waveguide. The load section has a tubiform shape, with an exterior surface congruent with an interior surface of the waveguide and an interior surface defining a circumferential step within the waveguide. A method of making a compact integrated waveguide load includes providing a waveguide and placing electromagnetic wave absorbing materially circumferentially around the interior surface to create an inward step.
Description
[0001]This application is a divisional of U.S. patent application Ser. No. 12 / 058,433 (currently pending) filed on Mar. 28, 2008, and claims the benefit thereof. The foregoing application is also herein incorporated by reference.FIELD OF THE INVENTION[0002]The present application relates to waveguide loads for installation into a waveguide.BACKGROUND[0003]In radio frequency applications, waveguides are often used for guiding electromagnetic energy from one place to another. Waveguides are also sometimes used as radiating or receiving elements, for example as a horn antenna.[0004]Often, there is a desire to include an electromagnetic wave absorbing load within a waveguide. For example, a load may be used as a termination. A termination can absorb reflected power from a component (e.g., an antenna, circulator, isolator, or the like) to help prevent the reflected power from disrupting system operation.[0005]Generally speaking, a load comprises a lossy material disposed within the waveg...
Claims
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IPC IPC(8): H01P11/00
CPCH01P1/264Y10T29/49016H01P3/122B33Y80/00
Inventor SORENSEN, RORY KIMHARKER, NEIL KENNETHWOLLSCHLEGER, STEVEN DOUGLASEDWARDS, RICHARD GERALD
Owner L3 TECH INC