| 发明名称 | Carried recovery in re-modulation communication systems | ||
| 摘要 | A communication apparatus includes transmission circuitry and a frequency conversion unit. The transmission circuitry is configured to down-convert an input Intermediate Frequency (IF) signal using a transmit (TX) Local Oscillator (LO) signal so as to produce a TX baseband signal, to up-convert the TX baseband signal to produce an output Radio Frequency (RF) signal, and to send the output RF signal to an antenna. The frequency correction unit is configured to estimate a frequency of the TX baseband signal or of the input IF signal, and to adjust the TX LO signal based on the estimated frequency so as to cause the transmission circuitry to down-convert the input IF signal to a predefined target frequency. | ||
| 申请公布号 | US9172407(B2) | 申请公布日期 | 2015.10.27 |
| 申请号 | US201313779389 | 申请日期 | 2013.02.27 |
| 申请人 | Broadcom Semiconductors Israel Ltd. | 发明人 | Kushnir Igal Yehuda;Friedmann Jonathan;Shaked Ronen;Oren Tzahi |
| 分类号 | H04B1/04;H04L27/00;H03D3/00 | 主分类号 | H04B1/04 |
| 代理机构 | Sterne, Kessler, Goldstein & Fox P.L.L.C. | 代理人 | Sterne, Kessler, Goldstein & Fox P.L.L.C. |
| 主权项 | 1. A communication apparatus, comprising: a transmission circuit, configured to down-convert an input Intermediate Frequency (IF) signal using a transmit (TX) Local Oscillator (LO) signal to produce a TX baseband signal and to up-convert the TX baseband signal to produce an output Radio Frequency (RF) signal; and a frequency correction unit, configured to estimate a frequency using the TX baseband signal, and to adjust the TX LO signal based on the estimated frequency to cause the transmission circuit to down-convert the input IF signal to a predefined target frequency. | ||
| 地址 | Airport IL | ||