Cisco CloudCenter: Get the Hybrid IT Advantage

Yagi Antenna

Definition - What does Yagi Antenna mean?

A Yagi antenna is a directional antenna consisting of a driven element such as dipole or folded dipole and additional parasitic elements, typically a reflector and one or more directors. It radiates in only one direction and is most commonly used in point-to-point communications.

A Yagi antenna is used for communications in a medium range of three to five miles between two points. It can also be used as a bridge antenna to connect clients to an access point.

This term is also known as a Yagi-Uda array or patch antenna.

Techopedia explains Yagi Antenna

The Yagi antenna was invented by Shintaro Uda and his colleague Hidetsugu Yagi in 1926. A similar design to the Yagi antenna is found all over the United States and is referred to as a log-periodic antenna.

A Yagi antenna has two to three straight antenna elements, which are set to a length of roughly half the electrical wavelength they are designed to support. It is considered a balanced type but can also be unbalanced depending on whether it is used with a balun at the feed line joint, which joins the drive element of the antenna.

The benefits of the Yagi antenna include good range and ease of aiming the antenna compared to other directional dishes and designs. Since the Yagi antenna is directional, it focuses its entire signal in a cardinal direction. This results in increased gain over an antenna dispersing energy in a 360-degree circle, such as the omni-directional model of other antenna designs.

One disadvantage of the Yagi design is its large size, especially for the range achieved.

Share this:

Connect with us

Email Newsletter

Join thousands of others with our weekly newsletter

The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.