Microwave Devices

What is Microwave?

Microwave devices can be classified into relays and coaxial switches which switches high frequency These devices are frequently used in area of test and measurement equipment, wireless device, and base station use

How does work Microwave?

Microwave ovens use radio waves at a specifically set frequency to agitate water molecules in food. As these water molecules get increasingly agitated they begin to vibrate at the atomic level and generate heat. This heat is what actually cooks food in the oven. Because all particles in the food are vibrating and generating heat at the same time, food cooked in the microwave cooks much more swiftly than food cooked in a conventional oven where heat must slowly travel from the outside surface of the food inward.

Different Types of Microwave

1. Compact microwaves have a capacity of approximately 0.9 cubic feet. Their small size makes them ideal for cramped kitchens, apartments, college dorms, offices and cabins

2. Mid-size microwaves range in capacity from 1.0 to 1.4 cubic feet. These models require more shelf space, but they can accommodate enough food for a medium-sized family.

3. Full-size microwaves have a capacity of 1.5 cubic feet or more. They're best for cooks who spend a lot of time in the kitchen, have adequate counter space available, and regularly prepare food for several people.

Advantage & Disadvantage

Advantages

1. No cables needed

2. Multiple channels available

3. Wide bandwidth

Disadvantages

1. Line-of-sight will be disrupted if any obstacle, such as new buildings, are in the way

2. Signal absorption by the atmosphere. Microwaves suffer from attenuation due to atmospheric conditions.

3. Towers are expensive to build

Application of Microwave

1. Frequencies 100 MHz -30 GHz.

2. Diagnostic applications: tumor detection based on differences in tissue electrical properties.

3. Regional hyperthermia integrated with MRI

4. Therapeutic applications based on local heating: prostate hyperplasia, heart and other tissue ablation, angioplasty.

5. Applications not reviewed: MRI (& fMRI), radiometry, telemetry, motion detection.

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