CST – Computer Simulation Technology

Sleeve Monopole Antenna

Image of the Sleeve monopole antenna. Image of the Sleeve monopole antenna.

The standard monopole is one of the most commonly used antennas. In its simplest form, it consists of a quarter-wavelength wire driven with respect to a large ground plane by a coaxial feed line. This simple topology has the drawback of being fairly frequency-sensitive - something that can be curbed through the addition of a sleeve. Although adding the sleeve increases manufacturing complexity, the cylindrical shape is maintained, instead of changing to a conical or more three dimensional (larger volume) structure typical of most other wide bandwidth monopole variations. This might be useful when wind loading need to be considered. Another advantage of the Sleeve monopole is it's in-band pattern stability.

The image below shows an S11 comparison between the ...

standard- and sleeve monopole antenna. From this graph it is clear that a standard monopole is better matched over a narrow band where the Sleeve monopole is less efficient, but operates over much wider frequency band.

S11 comparison between the standard- and sleeve monopole antennas. S11 comparison between the standard- and sleeve monopole antennas.

Rate this Article

0 of 5 Stars
5 Stars
0%
4 Stars
0%
3 Stars
0%
2 Stars
0%
1 Stars
0%
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.