Antennas are the electronic devices that are used to transmit and receive radio signals. These are electrical conductors for radio waves. Heinrich hertz discovered antennas in 1888. He discovered the antennas to prove the existence of electromagnetic waves. They convert radio frequency electrical current to electromagnetic waves and vice versa. The...
The function of antennas at base stations of cellular radio systems has been proven to be a successful way to increase the performance and the channel ability of personal communication systems. In compare to those technically highly developed base station antennas, the exterior and the practical principle of car antennas with omni directional patte...
The elements of the antenna array means the collection of all the similar radiation and elements related to the antenna, where the counting of the elements starts from 1 till N number. The similarity of the elements is judged on the basis of the same frequency, which means to derive voltage of each element one has fixed amplitude and phase angle. T...
An antenna is also known as the aerial. Antenna transmits and receives the radio active waves in the class of electromagnetic waves. An antenna is the arrangement of the electric conductors. Basically it serves the purpose of converting the electrical of radio frequency into electromagnetic waves and vice versa. An antenna is used for many purposes...
Adding yoga to one’s lifestyle can reap many benefits. Watching television is a sedentary activity, and one can easily perform yoga while watching TV. For doing yoga, a person does not need to move away from his place. He can be in a room, do yoga, and watch TV at the same time. Moreover, one does not get bored while doing yoga when he does it with...
Exercise is necessary in daily routine and has various good effects and no bad effects on the body and mind. It releases tension and makes a person more fit to do various other daily activities. It is a kind of a way out of the daily routine and stress and tensions. There are various kinds of exercises that one can take up according to their liking...
A walker is electric exercise equipment used for exercising purpose. Using walker has many positive advantages on health of the user. The user is allowed to walk on the walker without moving from his place. A walker is simple exercise equipment which is easy to use. A walker can be kept at home which will allow the user to exercise within the comfo...
Treadmill is an electronic device which is used for exercising. Exercising with the help of treadmill has many positive advantages on the health of the user. The user of the treadmill is allowed to walk, run or jog on the belt of the machine which moves in a circular motion. Speed of the user can be maintained with the treadmill. Treadmill can be k...
Tai chi is one of the many activities that can be done while watching TV. In Mandarin, Tai Chi or Tai Chi Chuan refers to “supreme fighting”. It is mainly a form of martial arts originated in China around the 16th century. During the 1970s, it was introduced in the United States, and has been growing in popularity ever since.
A stepper is an electrical machine exerciser. It is almost resembles to the treadmill or in fact it is a member of the tread mill family. Te only difference is that the steppers are more portable and smaller in size. They are mainly used for aerobic exercises at home. Steppers are a perfect way to work out the thighs and the leg and the lower parts...