Basic Concepts

Microwave Theoretical Consideration

What are Microwaves?

Definition

Electromagnetic wave in frequency of 300MHz ~ 300GHz

Industrial Frequency and Features

Frequency : 433MHz, 915MHz, 2.45GHz
433MHz, 915MHz : industrial applied drying field
2.45GHz : ceramic drying / sintering, chemical reaction, organic compound Curing, food heat treatment/sterilization
Others : application of 28GHz, 60GHz depending on purpose

Principal of Dielectric Heat

Adding electric field to a dielectric substance with a pair of +ion and –electron arranges the pair along the electric field. If added backward, the array reverses as well. Inner heating by dipole revolution or vibration within molecules.

Heat Convert Power Loss P

Power loss(P) that becomes heat within a dielectric substance

(Note) f:Hz, v: size of electric field, ε: specific inductive capacity, tanδ:loss factor