Log-Periodic Antennas
Log-periodic antennas are a type of directional antenna designed to operate over a wide range of frequencies. They consist of a series of dipole elements arranged in a specific geometric pattern, where the lengths and spacings of the elements vary logarithmically.
This category of antennas includes the log-periodic dipole array (LPDA), the custom quad, and the Yagi-Uda antennas, each offering unique advantages for various applications. The Yagi-Uda antenna, while not inherently log-periodic, is frequently grouped in this category due to its directional characteristics and is widely used in television reception and amateur radio. The LPDA is renowned for its broad frequency range and consistent gain, making it ideal for applications such as telecommunications and broadcasting. The custom quad antenna, often tailored to specific needs, provides enhanced gain and directivity, suitable for both amateur and professional radio use.
Log-Periodic Antenna Catalog
Apps
| Antenna Designer | Design, visualize, and analyze antennas |
Objects
lpda | Create printed log-periodic dipole array antenna |
quadCustom | Create Yagi-Uda custom array antenna |
yagiUda | Create Yagi-Uda array antenna |
Functions
Featured Examples
Analysis of Biquad Yagi for Wi-Fi Applications
BiquaYagi for Wi-FI applications.
Direct Search Based Optimization of Six-Element Yagi-Uda Antenna
Optimizes a 6-element Yagi-Uda antenna for both directivity and 300Ω input match using a global optimization technique. The radiation patterns and input impedance of antennas are sensitive to the parameters that define their shapes. The multidimensional surface over which such optimizations must be performed have multiple local optima. This makes the task of finding the right set of parameters satisfying the optimization goals particularly challenging and requires the use of global optimization techniques. One such technique is pattern search, a direct search based optimization technique that has yielded impressive results for antenna design optimization.
Surrogate Based Optimization of Six-Element Yagi-Uda Antenna
Optimize directivity and input impedance of a six-element Yagi-Uda antenna.
SADEA Optimization of Six-Element Yagi-Uda Antenna using Custom Objective Function
Optimize six-element Yagi-Uda antenna using a custom objective function.
