发明名称 |
Spread spectrum communication transmitter an LSI therefor |
摘要 |
High-sensitivity transmission can be performed in a wide temperature range, and spread spectrum communication free from jitters and bit errors in high-speed digital signal transmission can be performed. There is provided a spread spectrum communication transmitter for performing FSK modulation for switching the frequency in correspondence with the level of each bit of the serial digital data, performing spread spectrum modulation of a resultant FSK-modulated signal, and transmitting the data, wherein an FSK modulation unit (1) for performing the FSK modulation has a direct digital synthesizer and a synchronization circuit (19) is arranged to synchronize an FSK signal having a frequency corresponding to at least one level of the each bit with a PN code for the spread spectrum modulation.
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申请公布号 |
US5500871(A) |
申请公布日期 |
1996.03.19 |
申请号 |
US19940225252 |
申请日期 |
1994.04.08 |
申请人 |
MITSUI MINING & SMELTING CO., LTD. |
发明人 |
KATO, SHUNJI;MIYAJIMA, HIROMITSU |
分类号 |
H04J13/00;H04B1/69;H04L27/12;(IPC1-7):H04B1/69 |
主分类号 |
H04J13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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