인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
피인용 0
초록·키워드
This study proposes a method to address issues that may arise during the linearization process of a high-power amplifier (HPA) used in TDD-based communication equipment and to protect the device. When operating digital predistortion (DPD) or performing frequency alignment (FA), noise peaks can enter the HPA together with the RF control output signal, creating transient over-input signals. These excessive input levels can potentially destroy the main transistor (TR), which is the core component of the HPA. However, this research demonstrates that such damage can be prevented. Experimental tests conducted on a standalone module showed that over-input signals could be about 10dB higher than the control output signal, and at these high input levels, the main TR was found to be damaged. To protect the device, a peak limiter was applied, reducing the over-input signal by 15dB. In other words, although the over-input signal was originally 10dB above the control output, after passing through the peak limiter, it became 5dB below the control output. This confirms that the over-input signal was sufficiently mitigated. Furthermore, a protective comparison test was conducted by applying the method to an actual HPA. Under an over-input condition, the circuit output was reduced by more than 20dBm, thereby lowering the level of the signal entering the HPA’s main TR and effectively protecting it.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
최근 본 자료 전체보기
UCI(KEPA) : I410-151-25-02-092300803
