| Presentation | 1998/7/3 UHF Crystal Resonators Operating in the Fundamental Mode Osamu ISHII, Hirokazu IWATA, Makoto SUGANO, Tsunenori SHIBATA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The UHF AT-cut crystal resonators operating in the fundamental mode were manufactured using both wet chemical etching technology with high etching rate and reactive ion etching technology with low etching rate for high-precision thickness adjustment in combination. The ratio of the film thickness of the reverse side gold electrode to the thickness of the crystal substrate(9%), together with the film thickness of the main gold electrode(60nm), creates a resonance at center frequency of 622 MHz with a favorable frequency temperature characteristic of frequency shifts within ±15 ppm at the temperature range from -35℃ to +85℃. Furthermore, the application of this resonator to the configuration of VCXO for the Colpitts oscillation circuit produced a frequency control characteristic of ±120ppm/+2.5V±2V and a phase noise characteristic of -100dBc/Hz at a offset frequency of 1 kHz. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | UHF / Fundamental mode / AT-cut / Crystal resonator / Frequency temperature characteristics / VCXO |
| Paper # | US98-27,EMD98-19,CPM98-51,OME98-49 |
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| Conference Information | |
| Committee | OME |
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| Conference Date | 1998/7/3(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 | Organic Material Electronics (OME) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | UHF Crystal Resonators Operating in the Fundamental Mode |
| Sub Title (in English) | |
| Keyword(1) | UHF |
| Keyword(2) | Fundamental mode |
| Keyword(3) | AT-cut |
| Keyword(4) | Crystal resonator |
| Keyword(5) | Frequency temperature characteristics |
| Keyword(6) | VCXO |
| 1st Author's Name | Osamu ISHII |
| 1st Author's Affiliation | Central Research Laboratories, Toyo Communication Equipment Co., Ltd.() |
| 2nd Author's Name | Hirokazu IWATA |
| 2nd Author's Affiliation | Central Research Laboratories, Toyo Communication Equipment Co., Ltd. |
| 3rd Author's Name | Makoto SUGANO |
| 3rd Author's Affiliation | Central Research Laboratories, Toyo Communication Equipment Co., Ltd. |
| 4th Author's Name | Tsunenori SHIBATA |
| 4th Author's Affiliation | Central Research Laboratories, Toyo Communication Equipment Co., Ltd. |
| Date | 1998/7/3 |
| Paper # | US98-27,EMD98-19,CPM98-51,OME98-49 |
| Volume (vol) | vol.98 |
| Number (no) | 164 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |