Publication

Reconfigurable Antenna for Multi-Target Localization

2026

Abstract

This paper presents a frequency- and patternreconfigurable antenna designed for high-resolution multitarget detection. The proposed antenna is composed of 16 sector-shaped patches whose operating states are controlled by PIN diodes. To overcome the issue of correlated echoes originating from the same transmitting antenna, frequency reconfigurability is employed to achieve frequency-domain decorrelation. After decorrelation, the antenna can generate multiple distinct radiation patterns. Each pattern is treated as a virtual array element, replacing a conventional multi-element array for target localization using the MUSIC algorithm. By combining frequency-domain decorrelation with pattern-based virtual array synthesis, the proposed approach provides a compact sensing platform that achieves accurate multi-target localization while significantly reducing system size and complexity.

Official source

https://infoscience.epfl.ch/entities/publication/dad0aacd-3ea7-4490-8c41-c89bc76ef480

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/dad0aacd-3ea7-4490-8c41-c89bc76ef480

About this result

Related concepts (32)

Phased array

In antenna theory, a phased array usually means an electronically scanned array, a computer-controlled array of antennas which creates a beam of radio waves that can be electronically steered to point in different directions without moving the antennas. In a simple array antenna, the radio frequency current from the transmitter is fed to multiple individual antenna elements with the proper phase relationship so that the radio waves from the separate elements combine (superpose) to form beams, to increase power radiated in desired directions and suppress radiation in undesired directions.

Antenna array

An antenna array (or array antenna) is a set of multiple connected antennas which work together as a single antenna, to transmit or receive radio waves. The individual antennas (called elements) are usually connected to a single receiver or transmitter by feedlines that feed the power to the elements in a specific phase relationship. The radio waves radiated by each individual antenna combine and superpose, adding together (interfering constructively) to enhance the power radiated in desired directions, and cancelling (interfering destructively) to reduce the power radiated in other directions.

Smart antenna

Smart antennas (also known as adaptive array antennas, digital antenna arrays, multiple antennas and, recently, MIMO) are antenna arrays with smart signal processing algorithms used to identify spatial signal signatures such as the direction of arrival (DOA) of the signal, and use them to calculate beamforming vectors which are used to track and locate the antenna beam on the mobile/target. Smart antennas should not be confused with reconfigurable antennas, which have similar capabilities but are single element antennas and not antenna arrays.

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Reconfigurable Antenna for Multi-Target Localization

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