| Presentation | 1995/10/20 Vector Modulation Error of Even Harmonic Quadrature Modulator Kenji Kawakami, Mitsuhiro Shimozawa, Kenji Itoh, Akio Iida, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, a direct converter for digital radio communication is proposed for small size and light weight transmitters. An even harmonic modulator with an anti parallel diode pair has high suppression of carrier leakage which is one of vector error components in quadrature modulators. This report indicates the maximam value of Vector Modulation Error (VME). This error is caused by unbalance of modulated wave level with two even harmonic mixers, an amplitude and a phase error at couplers, and an interferrence of a frequency 2fp through an inphase divider for a frequency fp. This result revealed that relationship between S-patrameters of each components and VME, and it becomes clear how to design modulators with required VME, Finaly, our experimental results in X-band indicates the same dependence with analysis. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | even harmonic modulator / direct converter / vector modulation error |
| Paper # | EMCJ95-50,MW95-94 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 1995/10/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Electromagnetic Compatibility (EMCJ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Vector Modulation Error of Even Harmonic Quadrature Modulator |
| Sub Title (in English) | |
| Keyword(1) | even harmonic modulator |
| Keyword(2) | direct converter |
| Keyword(3) | vector modulation error |
| 1st Author's Name | Kenji Kawakami |
| 1st Author's Affiliation | Mitsubishi Electric Corp() |
| 2nd Author's Name | Mitsuhiro Shimozawa |
| 2nd Author's Affiliation | Mitsubishi Electric Corp |
| 3rd Author's Name | Kenji Itoh |
| 3rd Author's Affiliation | Mitsubishi Electric Corp |
| 4th Author's Name | Akio Iida |
| 4th Author's Affiliation | Mitsubishi Electric Corp |
| Date | 1995/10/20 |
| Paper # | EMCJ95-50,MW95-94 |
| Volume (vol) | vol.95 |
| Number (no) | 324 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |