Antenna Unit

The unit is the antenna unit. It covers the basic principles about antennas. It allows to learn how to perform the most common antenna measurements (radiation pattern, SWR, etc. ). It also allows students to understand when it is necessary to add matching components to reach the correct matching between the antenna, the transmission line and the generator in order to improve the performance of the system.

ATENG 10963 — Antenna Unit

• The Antenna Unit “ATENG 10963” is composed of:
• RF-Generator and SWR-Meter (in metallic box):
• RF-Generator:
  Based on voltage controlled oscillator (VCO).
• Wide range of generated frequencies: from 600 MHz to 1700 MHz.
  Frequency tuning through a potentiometer on the front panel.
  Frequency display on the front panel.
  50 Ω of nominal impedance.
• SWR-Meter:
• Frequency range: 600 MHz to 2.5 GHz.
  Insertion loss ≥ 0.1dB.
  SWR measurement through cross needle of forward and reflected RF power.
  ATENG 10963 detail
  50 Ω of nominal impedance.
  SMA connector to transmitter antenna.
• Spectrum analyzer (located in the receiver antenna tower):
• Frequency range: 700 MHz to 2.5 GHz.
• Typically level range: -80 dBm to 0 dBm.
  Configurable sample time, minimum 100 ms.
  Accuracy +/- 4 dB.
  Direct RF spectrum display.
  Frequency and signal strength display.
  High resolution multifunction display.
  50 Ω of nominal impedance.
  SMA connector to receiver antenna.
• Two towers of antennas:
  Receiver Antenna Tower.
  Transmitter Antenna Tower. The base of this tower has screen printed marks of position (degree wheel) for help the students performing
  the radiations plots with different degree resolutions.
• EAN-1. Antennas Kit 1 (included in the supply):
  All antennas connect to RF-Generator through a SMA connector.
• Monopole antenna:
  Designed for 1200 MHz transmission. l/2 of wavelength. 50 Ω of nominal impedance.
• Monopole antenna with ground plane:
  Designed for 1200 MHz transmission. l/2 of wavelength. 50 Ω of nominal impedance.
• Drooping monopole antenna:
  Designed for 1200 MHz transmission. l/4 of wavelength. 50 Ω of nominal impedance.
• Straight dipole antenna (short l/2):
  Designed for 1300 MHz transmission. l/2 of wavelength. 50 Ω of nominal impedance.
• Straight dipole antenna (large l):
  Designed for 1300 MHz transmission. l of wavelength. 50 Ω of nominal impedance.
• Folded dipole antenna (300 Ω):
  Designed for 1400 MHz transmission. l/2 of wavelength. 300 Ω of nominal impedance.
• Folded dipole antenna (adapted 50 Ω):
• Designed for 1400 MHz transmission. l/2 of wavelength. 6:1 Balun (length: l/2 of wavelength) inside the fixing system of the
  antenna. 50 Ω of nominal impedance.
• Helical antenna (right-hand circular polarization):
  Designed for 1600 MHz transmission. 50 Ω of nominal impedance.
• Helical antenna (left-hand circular polarization):
  Designed for 1600 MHz transmission. 50 Ω of nominal impedance.
• Circular loop antenna:
  Designed for 850 MHz transmission. 50 Ω of nominal impedance.
• Square loop antenna:
  Designed for 850 MHz transmission. 50 Ω of nominal impedance.
• Diamond loop antenna:
  Designed for 850 MHz transmission. 50 Ω of nominal impedance.
• Microstrip patch antenna:
  Designed for 5 bands of frequency transmission. l/2 of wavelength. 50 Ω of nominal impedance.
• Yagi-Uda antenna:
  Designed for 900 MHz transmission. 9 elements Yagi-Uda antenna. 50 Ω of nominal impedance.
• Log-periodic antenna:
• Designed for the range between 680 – 2900 MHz MHz transmission. Max. transmission power: 10 W. 50 Ω of nominal
• impedance.VSWR (typ.): <2:1. Gain (typ.): 7dBi.
  Antennas expositor which allows the access of different antennas easily.
• Space required between antennas: 2 – 3 m.