Dual-Functional On-Chip AlGaAs/GaAs Schottky Diode for RF Power Detection and Low-Power Rectenna Applications

نویسندگان

  • Abdul Manaf Hashim
  • Farahiyah Mustafa
  • Shaharin Fadzli Abd Rahman
  • Abdul Rahim Abdul Rahman
چکیده

A Schottky diode has been designed and fabricated on an n-AlGaAs/GaAs high-electron-mobility-transistor (HEMT) structure. Current-voltage (I-V) measurements show good device rectification, with a Schottky barrier height of 0.4349 eV for Ni/Au metallization. The differences between the Schottky barrier height and the theoretical value (1.443 eV) are due to the fabrication process and smaller contact area. The RF signals up to 1 GHz are rectified well by the fabricated Schottky diode and a stable DC output voltage is obtained. The increment ratio of output voltage vs input power is 0.2 V/dBm for all tested frequencies, which is considered good enough for RF power detection. Power conversion efficiency up to 50% is obtained at frequency of 1 GHz and input power of 20 dBm with series connection between diode and load, which also shows the device's good potential as a rectenna device with further improvement. The fabricated n-AlGaAs/GaAs Schottky diode thus provides a conduit for breakthrough designs for RF power detectors, as well as ultra-low power on-chip rectenna device technology to be integrated in nanosystems.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

RF-to-DC Characteristics of Direct Irradiated On-Chip Gallium Arsenide Schottky Diode and Antenna for Application in Proximity Communication System

We report the RF-to-DC characteristics of the integrated AlGaAs/GaAs Schottky diode and antenna under the direct injection and irradiation condition. The conversion efficiency up to 80% under direct injection of 1 GHz signal to the diode was achieved. It was found that the reduction of series resistance and parallel connection of diode and load tend to lead to the improvement of RF-to-DC conver...

متن کامل

A Conformal 10 GHz Rectenna for Wireless Powering of Piezoelectric Sensor Electronics

This paper presents the design, implementation and characterization of a rectenna array for wireless powering of sensor electronics for airframe fatigue detection. The rectenna aperture is powered 5 minutes at a time during inspection with a requirement of ±15V at 100mW. The maximum incident RF power is 10mW/cm. A single rectenna element at this incident power density has an output power of 5 m...

متن کامل

Zero Bias Schottky Diode Model for Low Power, Moderate Current Rectenna

Zero bias Schottky diode model for low RF input power (≤ 0 dBm at antenna input port) and moderate DC current (≥ 30 μA) RECtifying anTENNAs (RECTENNAs) is investigated. The model provides diode parameters at the desired output DC current level to be matched with the antenna so that optimum power transfer from antenna to the diode occurs. The model relies primarily on DC V-I diode characteristic...

متن کامل

5.8 GHz Simple Compact Folded Dipole Rectenna without Chip Capacitor

The rectenna is an RF power receiver converting the received power into DC power that can then be consumed by other subsystem. Recently, the compact rectenna technology has gained great attention in many of the sensor applications [1, 2]. Designing of a rectenna system is difficult in matching the antenna impedance with that of the rectifying diode. Unlike the impedance matching for traditional...

متن کامل

Optimization of Passive Low Power Wireless Electromagnetic Energy Harvesters

This work presents the optimization of antenna captured low power radio frequency (RF) to direct current (DC) power converters using Schottky diodes for powering remote wireless sensors. Linearized models using scattering parameters show that an antenna and a matched diode rectifier can be described as a form of coupled resonator with different individual resonator properties. The analytical mo...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره 11  شماره 

صفحات  -

تاریخ انتشار 2011