# An optimized design for motivated broadband LPDA antenna

## TL;DR

This paper introduces a high-gain, wideband LPDA antenna optimized for millimeter-wave applications like wireless personal area networks.

## Contribution

The novel design achieves a 3 dBi gain improvement and operates efficiently in the 40-70 GHz range using a four-arm structure and circular director units.

## Key findings

- The antenna achieves a maximum realized gain of 14.97 dBi at 60 GHz.
- The design resonates effectively in the 40-70 GHz millimeter-wave band.
- Simulation and testing results align well, showing improved performance over prior designs.

## Abstract

This paper presents a super wideband and high-gain log periodic dipole array (LPDA) antenna. The overall structure of the antenna was constructed using microwave studio computer simulation technology. The optimal sizes of the planned antenna are 39 × 10× 0.254 mm3. The engineered antenna arrangement is implemented on an RT5880 substrate as a dielectric medium. The LPDA is arranged in four arms that are equally spaced on both lines. The main 50Ω feeder line is partially grounded at the back of the substrate. A combination of circular director units is being studied and tuned in a regular pattern at a predefined distance from the antenna. An improvement in gain of 3 dBi is the response of the director units. The Conformist LPDA is adjusted to achieve a wide range of millimeter wave bands ranging from 40 to over 70 GHz. The antenna resonates at 60 GHz, where the maximum realized gain of 14.97 dBi is attained. The antenna was tested for utilization in the V-band involving wireless personal area network (WPAN) applications recommended by IEEE 802.11ad and IEEE 802.15.3c. The outcomes of the constructed antenna elements' tests and simulations agree fairly well. The proposed layout works better than previous efforts in this field.