• 한국인터넷방송통신학회논문지
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• 제8권2호
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• pp.67-73
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• 2008

Reconfigurable radio technology is needed to reconstruct frequency and modem functionality, which can be different within various regions. In addition, it makes it possible for a single mobile handset to support various standards of wireless communication, and thus plays a key role inmobile convergence. A MMIC VCO(Monolithic Microwave Integrated Circuit Voltage Controlled Oscillator) has been developed to produce high power and wide bandwidth that adapts the Clapp-Gouriet type oscillator for series feedback. We were fabricated based on the 0.15um pHEMT from TRW. The MMIC VCO was connected to an alumina substrate on the carrier for testing. This MMIC VCO module shows good performance when compared with existing VCOs. Futhermore, it has potential as a reconfigurable MMIC VCO for ubiquitous communications such as LMDS (Local Multipoint Distribution Service), VSAT, Point to Point Radio and SATCOM.

• Journal of Electrical Engineering and Technology
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• 제5권1호
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• pp.151-155
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• 2010

Reconfigurable radio technology is needed to reconstruct frequency and modem functionality, which can be different in various regions. In addition, it makes a single mobile handset capable of supporting various standards of wireless communication and thus plays a key role in mobile convergence. An MMIC VCO (voltage controlled oscillator) has been developed for high power and wide bandwidth where Clapp-Gouriet type oscillators are adapted for series feedback, and was fabricated based on 0.15um pHEMT of TRW. The MMIC VCO was connected to an aluminar substrate on the carrier for testing. This MMIC VCO module showed good performance in comparison to existing works. Furthermore, it can be potentially extended to reconfigure an MMIC VCO for wireless systems such as military applications and satellite communications.

• 전기전자학회논문지
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• 제7권2호
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• pp.230-235
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• 2003

소형화, 집적화된 Ka-band용 MMIC VCO(Voltage Controlled Oscillator)를 설계 및 제작하였다. Clapp-Gouriet형 오실레이션 방식을 이용하여 VCO를 직접 설계 및 제작하였고, 또한 이를 별도로 제작한 Alumina 기판과 함께 Carrier 위에서 조립 후 모듈화하였다. 결과적으로 MMIC로 구성된 Ka-band의 VCO 모듈은 출력 10dBm, Bandwidth 400MHz, phase noise -90dBc/Hz@1MHz까지의 성능을 보이면서 우수한 성능을 가짐을 확인할 수 있었다.