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정영준;김재영;최재익;박재홍
- The Journal of Korean Institute of Electromagnetic Engineering and Science
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- v.11 no.2
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- pp.302-312
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- 2000
Digital TV tuner for 8-VSB modulation was developed with satisfying the requirements of ATSC. Double frequency conversion and active tracking filter was used in order to suppress IF beat and image band, which results in reducing the interference between adjacent channels and multi-channels. The implemented digital TV tuner has excellent performance such as the wide dynamic range, good flatness in passing band, and low phase noise. The developed tuner is available to handle the digital and analogue television signal at the same time.
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Korea Electrical Products Safety Association
- Product Safety
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- no.6 s.162
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- pp.58-61
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- 2007
지난 호에는 컬러수상기의 구조, 전자빔의 원리 및 비월주사의 구조에 대해서 알아보았다. 이어서 이번호에는 TV수신용 안테나(antenna), 튜너(tuner) 등의 원리 및 구조에 대해서 알아보도록 하겠다.
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Ahn, Sehoon;Lee, Minho;Park, Jongcheol;Jeong, Gyetaek
- The Journal of Korean Institute of Electromagnetic Engineering and Science
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- v.27 no.1
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- pp.1-7
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- 2016
In this paper, the tunable filter based on high power cavity using mechanical switch for 1.5 GHz band is presented. The LPF is inserted to eliminate the spurious wave, coupler is embeded to extract the output power, and then the tunable filter system is configured using mechanical switch. The LPF obtains attenuation over 40 dB between 4 GHz and 12.75 GHz, Coupler is satisfied with coupling value 40 dB and coupling isolation over 55 dB. The tunable filter system using mechanical switch obtains insertion loss 0.88 dB at bypass mode between 1,495.9 MHz and 1,510. 9 MHz, 3.29 dB at fil mode between 1,495.9 MHz and 1,500.9 MHz. It is also satisfied with output power of 132 W at the center frequency 1,498.4 MHz, and switching time below 10 ms.
https://doi.org/10.5515/KJKIEES.2016.27.1.1 인용 PDF KSCI