| 发明名称 | Radio apparatus | ||
| 摘要 | A radio apparatus includes a baseband signal generator to generate a baseband signal; a sine wave substituting device to substitute a transition part of the baseband signal in which a logic level switches from “0” to “1” or “1” to “0” with a sine wave represented with multi-values; and a delta sigma modulator to modulate the signal represented in the multi-values into a binary signal. | ||
| 申请公布号 | US9590663(B2) | 申请公布日期 | 2017.03.07 |
| 申请号 | US201615098694 | 申请日期 | 2016.04.14 |
| 申请人 | Hitachi, Ltd. | 发明人 | Aono Masahiro;Takei Ken |
| 分类号 | H04K1/02;H04L25/03;H04L25/49;H04B1/04;H04L27/20 | 主分类号 | H04K1/02 |
| 代理机构 | Mattingly & Malur, PC | 代理人 | Mattingly & Malur, PC |
| 主权项 | 1. A radio apparatus comprising: a baseband signal generator to generate a baseband signal; a sine wave substituting device to substitute a transition part of the baseband signal having a logic level switching from “0” to “1” or “1” to “0” with a multivalue signal of a sine wave; a delta sigma modulator to modulate the multivalue signal into a binary signal; a carrier wave generator to generate a carrier wave; and a carrier wave modulator to modulate the carrier wave with the binary signal of the delta sigma modulator; a power amplifier to amplify a transmission signal from the carrier wave modulator; a band-pass filter to band-limit the amplified transmission signal; and an antenna to output the band-limited transmission signal from the band-pass filter as a radio wave. | ||
| 地址 | Tokyo JP | ||