Title :
Voltage-controlled PIN diode attenuator with a temperature-compensation circuit
Author_Institution :
Satellite Commun. Syst. Dept., Electron. & Telecommun. Res. Inst., Taejon, South Korea
Abstract :
This paper presents a voltage-controlled PIN diode attenuator and its temperature-compensation circuit composed of a thermistor and simple operational amplifier circuits. After carefully investigating the temperature characteristics of PIN diode attenuators, we designed voltage-controlled PIN diode attenuators showing the linear attenuation characteristics of 16 dB with input voltage within the operating temperature range. The fabricated attenuator has demonstrated the improvement of attenuation variation from 15 to 0.5 dB in the temperature range from -15 to 65/spl deg/C.
Keywords :
automatic gain control; compensation; microwave circuits; p-i-n diodes; thermistors; waveguide attenuators; -15 to 65 degC; attenuation variation; linear attenuation characteristics; operating temperature range; operational amplifier circuits; temperature characteristics; temperature-compensation circuit; thermistor; voltage-controlled PIN diode attenuator; Attenuation; Attenuators; Automatic control; Circuits; Diodes; Microstrip; Parasitic capacitance; Radio frequency; Temperature distribution; Voltage;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2002.807701
