Microwave Antennas: 101

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An antenna plays a big role in transmitting and receiving data and the world of communication. An antenna that operates at microwave frequency is referred to as a microwave antenna. There are various different types of microwave antennas over a wide range of applications. Let’s take a look at a few of the different types available:

 

  1. Horn- Horn antennas have an impedance bandwidth that is wide. This implies that the input impedance slowly varies over a wide frequency range. There often is a directional radiation pattern that comes with a high antenna gain. They are very popular at UHF (300 MHz-3 GHz) and also at higher frequencies. The physical size of the horn antenna does not change.
  2. Parabolic – Parabolic is also the same as a satellite dish antenna. There is a very high gain and low cross polarization with this type of antenna. The bandwidth is very reasonable, and depending on the size of the dish there can be very wide band.
  3. Micro Strip Patch Antenna- Also just known as a patch antenna. A micro strip patch antenna consists of a radiating patch, which is bonded to a dielectric substrate on one side and has a ground plane on the reverse side. They are well known for their performance and are used in cellular phones, and global posting satellites to name a few.
  4. MIMO – Multiple inputs and multiple outlets (MIMO) are used in radio, and therefore multiple antennas are used at both the transmitter and receiver ends to improve communication’s performance. It can be used for antenna directivity or transmitting parallel data streams to increase the capacity of the system.
  5. Plasma – A plasma antenna can be utilized for both transmission and reception of radio signals as they are capable of operating up to 90 GHz frequency range. Plasma antennas are frequently used in high speed digital communications, 4G, electronic intelligence, and radar systems.
  6. Slot- Slot antennas include a metal surface with a hole cut out of it. They are widely used in radar antennas for sector antennas in cell phone base stations.
  7. Dielectric –Dielectric antennas are used mainly in the radio equipment of aircrafts, which operates on decimeter wavelengths. In the rod of the antenna a surface wave is generated and propagates along the axis of the rod. The lower the phase velocity, the greater the length of the rod will be.

 

Proper alignment of your microwave antenna is important to ensure everything is lined up and functioning properly, as it should. Easy kits are available for fast and accurate alignment of point-to-point, short-haul and long haul links.