Introduction to Antenna
A transducer which transmits or receives electromagnetic waves is known as an antenna (or aerial). Other words, antennas alter electromagnetic radiation into electrical current, or vice versa. Antennas usually deal in the reception and transmission of radio waves, and are an essential part of all radio equipment.
Antennas are employed in systems like radio and wireless LAN, television broadcasting, cell phones, radar, point-to-point radio communication, and spacecraft communication. Antennas are most generally used in air or outer space, but may also be operated within water or even by soil. Actually an antenna is an arrangement of one or other conductors, generally called elements. In transmission an altering current is formed in the elements through applying a voltage at the antenna terminals that causing the elements to radiate an electromagnetic field. In reception the opposite happens: an electromagnetic field from other source makes an alternating current in the elements and a subsequent voltage at the terminals of antenna. To collect the radio waves several receiving antennas (like horn and parabolic types) incorporate shaped reflective surfaces striking them and direct or focus them onto the actual conductive elements.
A general antenna is a vertical rod a quarter of a wavelength long. Such types of antennas are easy in construction, generally not expensive, and both radiate in and receive from each horizontal direction (omnidirectional). One restriction of this antenna is that it does not receive or radiate towards direction in which the rod points.
This area is called the antenna null or blind cone.
There are two basic categories of antenna directional patterns that with reference to a particular to dimensional plane (generally horizontal [parallel to the ground] or vertical [perpendicular to the ground]) are either,
1. Omni-directional (radiates evenly in all directions), like a vertical rod (in the horizontal plane) or
2. Directional (radiates more in one direction rather than in the other)
Latest technology based Electrical Engineering Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Antenna homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Antenna, project ideas and tutorials. We provide email based Antenna homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Antenna. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Electrical Engineering homework help and assignment help services. They use their experience, as they have solved thousands of the Electrical Engineering assignments, which may help you to solve your complex issues of Antenna. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
Classification of lipids tutorial all along with the key concepts of Acylglycerols, Phosphoacylglycerols, Sphingolipids, Sphingomyelins, Glycosphingolipids, Gangliosides, Waxes, Steroids and Terpenes
Orientation and Taxes tutorial all along with the key concepts of Introduction to Sexual Orientation, sexual identity and behavior, Measuring sexual orientation and Sexual arousal
tutorsglobe.com shift in demand and supply assignment help-homework help by online equilibrium price tutors
www.tutorsglobe.com offersmaterial price variance assignment help, material price variance homework help, answering questions to material price variance homework, accounting online tutoring by qualified tutors.
Theory and lecture notes of MRS and Special utility functions all along with the key concepts of Marginal Rate of Substitution, Special Utility Functions, Cobb-Douglas Utility Function, Quasi-Linear Utility Function, Budget Constraint. Tutorsglobe offers homework help, assignment help and tutor’s assistance on MRS and Special utility functions.
spiral model attempts to use the linear, sequential and stepwise procedure of linear sequential model and also incorporates the prototyping as needed.
www.tutorsglobe.com offers reactions at the a-carbon homework help, reactions at the a-carbon assignment help, online tutoring assistance, organic chemistry solutions by online qualified tutor's help.
tutorsglobe.com factors necessary for seed germination assignment help-homework help by online process of seed germination tutors
In financial accounting, a bank reconciliation statement is ready to reconcile among the bank balance as depicted through the pass- book and cash- book of a business organization.
tutorsglobe.com diseases caused by mycoplasmas assignment help-homework help by online mycoplasma tutors
Other Types of Bonding tutorial all along with the key concepts of Metallic bonding, Explaining the Physical Properties of Metals, Hydrogen bonding, Hydrogen Bonds in Biology, Other intermolecular forces, London dispersion forces, Dipole-dipole interactions
tutorsglobe.com structure of a virus assignment help-homework help by online viruses tutors
Theory and lecture notes of Chi-square test for independence all along with the key concepts of chi-square test for independence, homework help, assignment help. Tutorsglobe offers homework help, assignment help and tutor’s assistance on Chi-square test for independence.
www.tutorsglobe.com offers automobile engineering homework help - automobile engineering assignment help, online tutoring, answering questions and projects help by online engineering tutors.
tutorsglobe.com e-commerce assignment help-homework help by online computer science tutors
1930994
Questions Asked
3689
Tutors
1457887
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!