| Presentation | 1995/9/22 Improvement of Reliability of a Mudium-wave Radio Transmitter using Digital Technology Kazuhisa Hayeiwa, Hisashi Naka, Masahiko Yamazoe, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This papers presents a high reliable l0kW MF transmitter which can produce AM wavesdirectly from digitalized audio signals by combining the outputs of switching-type RF power modules and an analog-type RF power module, The transmitter is composed of three 5kW transmitters which two of them are operated in parallel and one is for stand-by, The 5kW transmitter consists of 15 switching-type RF power modules, one analog-type RF power module, an exciter/control module including a 14bits A/D converter and D/A converter which reconverts digital information (low-order 1O bits)back to analog signals to modulate the analog-type RF power modu1e with carrier PWM techniques, a combiner, a band pass filter. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | AM Transmitter / Digital / Medium-wave / Hybrid modulation / High-efficiency |
| Paper # | R95-7 |
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| Conference Information | |
| Committee | R |
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| Conference Date | 1995/9/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
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| Paper Information | |
| Registration To | Reliability(R) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improvement of Reliability of a Mudium-wave Radio Transmitter using Digital Technology |
| Sub Title (in English) | |
| Keyword(1) | AM Transmitter |
| Keyword(2) | Digital |
| Keyword(3) | Medium-wave |
| Keyword(4) | Hybrid modulation |
| Keyword(5) | High-efficiency |
| 1st Author's Name | Kazuhisa Hayeiwa |
| 1st Author's Affiliation | Japan Broadcasting Corporation Engineering Administration() |
| 2nd Author's Name | Hisashi Naka |
| 2nd Author's Affiliation | Japan Broadcasting Corporation Engineering Administration |
| 3rd Author's Name | Masahiko Yamazoe |
| 3rd Author's Affiliation | Japan Broadcasting Corporation Engineering Administration |
| Date | 1995/9/22 |
| Paper # | R95-7 |
| Volume (vol) | vol.95 |
| Number (no) | 257 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |