Microwave devices

1. Microwave Devices

2. 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

3. 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.

4. 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.

5. 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

6. 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.

7. Have You Any Question

8. Thanking Everybody