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White Papers

Emerson & Cuming Microwave Products offers several White Papers regarding technical issues that can be solved with microwave material products. Access to these papers is available through a free registration process.

White Papers

Theory and Application of RF/Microwave Absorbers (1.03 MB)
This white paper explores the theory and application of microwave absorbers. It includes relevant equations for absorber operation and descriptions of several applications. It also includes a survey of the different types of absorbers (magnetic, dielectric, foam, elastomer, etc.) as well as a description of absorber test methods.
Application and Theory of Dielectric Materials in RF/Microwave Systems (631.27 KB)
This white paper explores the microscopic basis of dielectrics at the atomic level and the macroscopic basis of dielectrics using Maxwell’s equations. It includes theory and equations governing RF and microwave interactions with dielectrics. Also included are a survey of dielectric applications, dielectric forms and test methods.
Cavity Resonance IEEE Article (317.83 KB)
This paper was published in IEEE magazine in August 2005. It uses equations and graphics from computer modeling to illustrate the effects of adding absorber to the energy in the cavity resonance.
Cavity Resonance White Paper (324.52 KB)
This white paper explains resonance in an enclosed cavity at RF/microwave frequencies. Using equations and computer modeling it shows the effect of adding absorber material to the cavity.
Dielectric Chart (61.68 KB)
Low Loss Dielectrics and Other Common Materials
Eccosorb Quick Reference (132.09 KB)
A quick reference list to our Eccosorb Material
Improving Signal Integrity with Absorber (467.49 KB)
This white paper details how adding absorber material to the edges of circuit boards and reduce resonances in the circuit board which can interfere with the proper operation. Data is presented both with and without the absorber material.
Increasing Directivity in Parabolic Antennas (602.8 KB)
Military White Paper (136.43 KB)
Path Loss Simulation Testing (32.79 KB)
Read on Metal RFID White Paper (518.84 KB)
If an RFID tag antenna is designed to deliver power efficiently to an IC in free space, then by definition, it is not designed to deliver power efficiently to that IC on or near a metal substrate. This paper examines the nature of this law, its physical reprecussions, and design methods to mitigate the consequences.
RFID in Complex Environments White Paper (171.36 KB)
RFID tags are intrisically linked to their surroundings. In the case that a tag's surroundings are highly conductive (metal, for example), highly lossy (carbon loaded black paint, for example) or both (salt water), the situation is complex. This paper examines these concepts and presents design methods to mitigate the consequences.