RFID reader antennas
dipole antennas evolved antennas ground anteena
aplication of v-n diagram
You can extend an antenna wire, but the added length will reduce amplitude of received signal. You may need an in-line amplifier depending on the application and length of antenna wire.
The only instance I've seen of using v as a function in the Oracle database is via their Application Express (aka Apex) web application development system. In Apex, the v function allows you to get a value for any variable in your Apex application. These variables are known as either page items or application items, depending on their scope.You can use the v function within procedural code within your Apex application, but more importantly, you can use it from compiled procedural code that you call from Apex. That is, the v function needs to be called from the Apex environment to know where to get the item value from.Syntax is: l_app_id := v('APP_ID');
You can get it from state banks of your district.
you have to print and return a application form
Hertz Antenna is lambda by 2 antenna & marconi antenna is lambda by 4 antenna...
To increase the gain and directivity in the direction of interest the lengths of the legs are increased in proportin. This results in sidelobes cancellation.The major lobes added together. The radiation pattern obtained is much sharper. The drawback of v antenna is that it provides stronger minor lobes which results in wastage of power in the undesired direction.
If a voltage is applied to the terminals of an antenna A and the current is measured at the terminals of another antenna B, then an equal current (in both amplitude and phase) will appear at the terminals of A if the same voltage is applied to B.Ref:http://www.cv.nrao.edu/course/astr534/AntennaTheory.html
An active antenna has a amplifier built in, a standard antenna does not. AKA powered antenna.
A passive antenna is an antenna that is not powered by an amplifier.