CST – Computer Simulation Technology

Open Sleeve Dipole

Image of the Open sleeve dipole Image of the Open sleeve dipole

The half-wave dipole antenna forms the basis for a number of other antennas such as the linear- and planar dipole arrays as well as Yagi-Uda and LPDA arrays. In its simplest form, it consists of two co-linear quarter-wavelength wire sections driven in anti-phase with respect to one another.

One popular way of increasing the operating bandwidth of a dipole structure is by using a sleeve. There are various ways in which a sleeve can be added to a dipole structure. The Open sleeve dipole is one very practical way to do this.

The Open sleeve dipole mentioned here includes a reflector and a quarter-wave balun, to enable feeding of the structure using an unbalanced coaxial line. Furthermore, two parasitic elements (sleeves) are added which enables a much wider bandwidth of typically 70% compared with 30% for a ...

Cylindrical dipole with a quarter-wave balun in front of a reflector.

The image below shows a comparison between the S11 of the Open sleeve and the Standard quarter wave dipole with quarter-wave balun designed and simulated in Antenna Magus.

S11 comparison between the Dipole with quarter-wave balun and reflector antenna vs the Open sleeve dipole antenna S11 comparison between the Dipole with quarter-wave balun and reflector antenna vs the Open sleeve dipole antenna

Rate this Article

0 of 5 Stars
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
contact support

Your session has expired. Redirecting you to the login page...

We use cookie to operate this website, improve its usability, personalize your experience, and track visits. By continuing to use this site, you are consenting to use of cookies. You have the possibility to manage the parameters and choose whether to accept certain cookies while on the site. For more information, please read our updated privacy policy

Cookie Management

When you browse our website, cookies are enabled by default and data may be read or stored locally on your device. You can set your preferences below:

Functional cookies

These cookies enable additional functionality like saving preferences, allowing social interactions and analyzing usage for site optimization.

Advertising cookies

These cookies enable us and third parties to serve ads that are relevant to your interests.