Title :
Monolithic Ka-band VCO with wide tuning range
Author :
Ryu, Seonghan ; Kim, Huijung ; Lim, Joonyoul ; Yim, Jounghyun ; Kwon, Woosung ; Kim, Bumman ; Im, Kyounghoon ; Kim, Youngwoong ; Han, Seogtae
Author_Institution :
Department of Electronic and Electrical Engineering and Microwave Application Research Center Pohang University of Science and Technology, Pohang, Korea
Abstract :
This paper reports on the design procedure and mesurement results of a Ka-band MMIC VCO utilizing a 0.15 um T-gate GaAs P-HEMT technology. A balanced buffer amplifier is also developed for assurance of output power higher than 10 dBm. The VCO with center frequency of 35 GHz exhibits a tuning range of up to 3 GHz and typical output power of 10 dBm at 35 GHz without the amplifier. The best measured phase noise at 1MHz offset is - 106 dBc/Hz. The buffer amplifier exhibits a typical gain of 5.9 dB with 15dBm output power. A lange coupler is used for a good matching between the VCO and amplifier.
Keywords :
Frequency; Gain measurement; Gallium arsenide; High power amplifiers; MMICs; Power amplifiers; Power generation; Power measurement; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Microwave Conference, 2002. 32nd European
Conference_Location :
Milan, Italy
DOI :
10.1109/EUMA.2002.339417
