A microwave is a kind of electromagnetic wave. Digital microwave communication is a way of transmitting digital information in the atmosphere via microwaves or line-of-sight wireless communications technology that uses high-frequency radio waves to provide a high-speed wireless connection that can send and receive information in the form of voice, video, and data.  Digital microwave communication refers to microwave communication that adopts a digital modulation scheme. 

Microwave radio transmission is commonly used in ground point-to-point communication systems, satellite communications, and space radio communications. Other microwave radio bands are used for radar, radio navigation systems, sensor systems, and radio astronomy.

Digital microwave radio communication requires a variety of devices for the software to work, including multiplexers, amplifiers, frequency multipliers, links, filters, oscillators, couplers, etc.

The International Telecommunication Union (ITU) and the Federal Communications Commission (FCC) standardize the operating frequency of microwaves and the actual frequency structure and bandwidth into operating bands.

Application ;

• Transmission of data, voice, fax, video, and audio.
• Ethernet traffic between Local Area
  Network (LAN)
• Security, telemetry, monitoring and control.
• Video surveillance (CCTV)
• Be a backup cable or fiber network.

Topology;

• A star network topology will contain one or more hub sites at strategic locations serving a chain of subordinate sites from a centralized hub.
• Ring structure, each site is connected to form a connected ring / circle.

Microwave advantages are as follows;

• The bandwidth capacity is large and applied to point-to-point communications. The microwave band has a bandwidth that is 30 times that of the entire radio spectrum below it.
• Extremely long distances transmission data
• It is possible to have more antenna gain.
• High-frequency results in reduced antenna size and lower power consumption.
• Line of sight propagation thereby reducing fading effects.
• Relatively low cost of operation and maintenance

Disadvantages of Microwaves;

• High investment costs.
• Requires a large installation area
• Only applies Line of sight mode
• Susceptible to rain, snow, and electromagnetic interference (Electromagnetic interference (EMI) is unwanted noise or interference in an electrical path or circuit caused by an outside source).
• In urban areas, the installation of Digital Microwave Radio will face many obstacles, because the nature of the waves cannot penetrate solid objects, even though this can be anticipated by adding repeaters, and of course, it will increase the cost burden.