Test my Merit My Results Create Exam

Higher Study | Electromagnetic Theory | Antennas

Which of the following statements is not true:
The term RADAR stands for:
A Cassegrain reflector antenna has a sub-reflector whose geometrical shape is:
An antenna in free space receives 4 μW of power when the incident electric field is 10 mV/m rms. The effective aperture of the antenna is:
In a typical mobile satellite array antenna, if three elements are activated, how many elements are deactivated?
What is the Optimum operation of a space diversity system in the antenna separations, if R = effective earth radius (meter) and L = path length (meter) is given?
If radiation resistance is 200 Ω and operating with 6 A of current at 4 GHz frequency, then what is the power radiated by an antenna?
Which of the following has a constant pattern in azimuthal plane?
Which of the following is a device that converts electrons to photons and vice-versa?
Which of the following antennas are used directly as radiators abroad satellites to illuminate comparatively large areas of the Earth and they are widely used as primary feeds for reflector-type antennas both in transmitting and receiving modes ?
Which of the following is NOT true with respect to antennas?
Which statement is false about microstrip line over stripline?
Antenna is an electrical device which converts
Which of the following antennas exhibit circular polarization?
Consider the following statements: 1. The antennas radiate energy. 2. An antenna is a transition device or transducer between a guided wave and a free space wave or vice versa. 3. The resonators and transmission lines store energy. 4. An antenna converts electromagnetic signals to currents or vice versa. Which of these statements are correct?
Ads