Broadband RF Adaptive Antenna With Automatic SWR Control by Using MEMS-RF Technology and Microcontroller Process

This article considers the possibility to create an automated antenna according system, for a broad spectrum of radiofrequency, in order to obtain a optimum tuning between the impedance of the final stage of radiofrequency and the broadcast antenna, based on the reduction of the standing wave ratio...

Full description

Saved in:
Bibliographic Details
Published in2018 IEEE 24th International Symposium for Design and Technology in Electronic Packaging​ (SIITME) pp. 335 - 338
Main Authors Nistor, N., Dumitrascu, B., Baicu, L.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2018
Subjects
Adaptive control
Antenna Adapter
Broadband antennas
Capacitors
Emission Parameters
MEMS-RF
Microcontrollers
Micromechanical devices
Radio frequency
Standing Wave Ratio
Tuning
Tuning Capacitor
Online AccessGet full text

Cover

More Information
Summary:This article considers the possibility to create an automated antenna according system, for a broad spectrum of radiofrequency, in order to obtain a optimum tuning between the impedance of the final stage of radiofrequency and the broadcast antenna, based on the reduction of the standing wave ratio parameter, (SWR). Although there are a lot of technical solutions for this problem, the proposed solution uses an MEMS-RF type element and a PID regulator. The tuning element or the actuator is a variable condenser built using MEMS technology, which provides a variable tuning for the antenna depending on the output voltage generated by the microcontroller. The voltage generated by the microcontroller is calculated in order to minimize an analogic voltage, the SWR. The automated tuning function will be reached using a software PID, implemented in an 8-bit microcontroller, which will optimize the broadcast and tuning parameters of the antenna in the working bandwidth. The schematic of the hardware, of the tuning software, and PID controller response of the automated control system are presented.
DOI:10.1109/SIITME.2018.8599223