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Uploaded byYong Heui Cho
Basics of Antenna Engineering
An antenna is a very important passive device for wireless communication. This presentation shows the basics of an antenna. Simply speaking, with this file we can understand why an antenna is important.
Basics of Antenna Engineering
- 1. Antenna Engineering CHO,Yong Heui Basics of Antenna Engineering
- 2. Introduction ( 교재소개 ) Warren L. Stutzman and Gary A. Thiele, "Antenna Theory and Design," 3rd ed., Wiley, 2012. Constantine A. Balanis, "Antenna Theory: Analysis and Design," 2nd ed., John Wiley & Sons, 1996. 0. Text Kin-Lu Wong, "Compact and Broadband Microstrip Antennas," John Wiley & Sons, 2002.
- 3. 1. Microwave SystemsTransmission Information Channel bandwidth Base band Inefficient wave radiation Modulation – center frequency Time domain Frequency domain 출처 : RFDH.com
- 4. Why do weneed modulation? Transmission efficiency Multiplexing Antenna length: wavelength Wave radiation: comparison with DC Battery: DC Antenna: AC 1. Microwave Systems
- 5. Microwave transmitter (Tx) Up-conversion: frequency 1. Microwave Systems 출처 : RFDH.com
- 6. Microwave receiver (Rx) Down-conversion: frequency 1. Microwave Systems 출처 : RFDH.com
- 7. Microwave transceiver Duplexer: bandpass filter or switch Loss, tx suppression, channel selection IF: superheterodyne No IF: direct conversion 1. Microwave Systems 출처 : RFDH.com
- 8. Antenna 1. MicrowaveSystems Important passive device Innovation
- 9. Aegis combat system:S-band 1. Microwave Systems SPY-1(1974): phased array radar, smart antenna 4 phased array radars, 3.6m x 3.6m, 4350 elements
- 10. Phased array radar1. Microwave Systems Several megawatts radar S-band: 2 ~ 4 GHz Cost: about half billion $
- 11. SBX (Sea BasedX-band radar) 1. Microwave Systems X-band: 8 ~ 12 GHz Cost: about 1 billion $ Norway, Russia, and USA Missile Defense: early warning radar – SBX – ground based interceptor
- 12. Hertz antenna (1886)2. Antennas
- 13. RC circuits 2.Antennas
- 14. Simple model forantenna 2. Antennas
- 15. 2. Antennas Dipoleantenna Simple but long structure Low efficiency Microstrip type
- 16. Loop antenna 2.Antennas Simple structure Low efficiency
- 17. First mobile phoneDr. Martin Cooper on 1973 Motorola 850 [g] 2. Antennas
- 18. Handy phone antennaHelical antenna 2. Antennas Complicated structure Medium efficiency
- 19. Triple band antenna2. Antennas
- 20. Array antenna Complicated structure High efficiency 2. Antennas Yagi antenna: one source
- 21. Microstrip patch antenna2. Antennas Simple and small structure Low efficiency
- 22. Antenna simulation Ansoft:Ensemble CST: MWS Ansoft: HFSS 2. Antennas
- 23. 무역위원회 2008년 보고서 3. Industrial Trend 2007 년 무역수지 5 천 6 백만 $ 적자 안테나의 분류 이동통신용 기지국용 자동차용 위성방송수신용 선박용레이다 출처 : 무역위원회
- 24. 3. Industrial Trend안테나 산업 구조 세계안테나시장 31 억 9 천만 $(2007 년 ) 37 억 2 천만 $(2009 년예상 )
- 25. 3. Industrial Trend휴대폰 안테나 산업의 경쟁력
- 26. 3. Industrial Trend기지국 안테나 산업의 경쟁력
- 27. 3. Industrial Trend안테나 산업의 SWOT 분석
- 28. 3. Industrial Trend안테나 산업의 문제점과 대응방안 국내 3G 이동통신서비스 설비투자 감소 대 · 중소기업 상생협력 중요산업 전형적인 소량 다품종 산업 원천기술 및 지적재산권 글로벌기업 독점 국내 통신 장비산업 취약 신규 무선통신 서비스 투자 확대 유도 안테나 관련 R&D 정책자금 지원 확대 대 · 중소기업 상생협력 지원 안테나산업의 전략적 육성 지원 국내 Wibro 등 무선통신기기 장비산업 지원