| 发明名称 | Radio transmission apparatus | ||
| 摘要 | A radio transmission apparatus includes a radio transmission IC including a vibration element and a fractional N-PLL circuit and a power amplifier generating a radio transmission signal and a control device that controls the radio transmission IC, and a temperature detection element. The control device controls the fractional N-PLL circuit based on temperature information obtained from the temperature detection element such that a frequency of the radio transmission signal is temperature-compensated. | ||
| 申请公布号 | US9628087(B2) | 申请公布日期 | 2017.04.18 |
| 申请号 | US201615135901 | 申请日期 | 2016.04.22 |
| 申请人 | Seiko Epson Corporation | 发明人 | Ito Hisahiro |
| 分类号 | H03L1/00;H03L1/02;H04B1/04;H03L7/197 | 主分类号 | H03L1/00 |
| 代理机构 | Harness, Dickey & Pierce, P.L.C. | 代理人 | Harness, Dickey & Pierce, P.L.C. |
| 主权项 | 1. A radio transmission apparatus comprising: a vibration element; a radio transmission semiconductor device that includes a fractional N-PLL circuit generating a radio transmission clock signal based on an output signal of the vibration element and a power amplifier generating a radio transmission signal based on the radio transmission clock signal; a control device that is configured to control the radio transmission semiconductor device; and a temperature detection element that is connected to the control device, wherein the control device is configured to control the fractional N-PLL circuit based on temperature information obtained from the temperature detection element such that a frequency of the radio transmission signal is temperature-compensated. | ||
| 地址 | JP | ||