My mother accompanied me to school on the first day. Other parents accompanied their children as well. We all waited in front of the school office.Soon a teacher came and led us to some classrooms. There we were put into four separate classes. This was when some children began to cry as the parents were not allowed into the classrooms. I did not cry because I had been to kindergarten before. Actually my mother went home soon after for she knew I would be all right. It was an enjoyable time for me as I got to know my new classmates. The teacher was very busy writing down our particulars so we had plenty of time to ourselves. Meantime some children continued to sob while their parents looked in anxiously through the windows. Soon recess came. Some of us headed for the tuck-shop while the rest headed for their parents. I bought a drink with the money my mother gave me. Getting to know my new friends had made me thirsty. After recess we went back to out classroom and my new friends and I managed to coax two boys to stop crying. In fact, soon we were laughing and playing together. Once in a while the teacher had to tell us to keep quiet as we were making too much noise. Still some parents looked in anxiously through the windows. Finally the bell rang for us to go home. Some of us were very relieved to be reunited with our parents. I too was glad to see my mother waiting for me at the school gate. I had made many friends. It had been a wonderful first day at school. | |||||||||||||||||||||
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Microstrip is a type of electrical transmission line which can be fabricated using printed circuit board technology, and is used to convey microwave-frequency signals. It consists of a conducting strip separated from a ground plane by a dielectric layer known as the substrate. The most commonly employed microstrip antenna is a rectangular patch which looks like a truncated microstrip transmission line. It is approximately of one-half wavelength long. When air is used as the dielectric substrate, the length of the rectangular microstrip antenna is approximately one-half of a free-space wavelength . As the antenna is loaded with a dielectric as its substrate, the length of the antenna decreases as the relative dielectric constant of the substrate increases. The resonant length of the antenna is slightly shorter because of the extended electric "fringing fields" which increase the electrical length of the antenna slightly. An early model of the microst...
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