专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07103086B2 Frequency hopping data radio 失效
公开(公告)号：US07103086B2
公开(公告)日：2006-09-05
申请号：US09968294
申请日：2001-10-01
申请人： David Steed , Hugh Nielsen
发明人： David Steed , Hugh Nielsen
IPC分类号： H04B1/707
CPC分类号： H04B1/713
摘要： Systems and methods that utilize a received signal to provide low cost, low power, high sensitivity radio frequency hopping communication. A transmitting system prepares a data packet that is to be communicated to a receiving system. The data packet includes a header, a network identification, and transmission data. A transmission frequency is identified and a phase lock loop (“PLL”) is set to the transmission frequency. The data packet is gathered, and frequency modulation and Differential Manchester encoding is performed. The signal is sent through a power amplifier and an antenna to a receiving system, which continually scans all channels of a frequency range for a valid signal. When a pulse is received, the signal is passed through a low noise amplifier, mixed down to 10.7 MHz, passed through one or more filters and one or more high gain amplifiers, mixed down to baseband, sent through a low pass filter, and then sent through a comparator. If an appropriate pulse width, expected bit pattern and a valid header are received, it is determined that the signal is valid and the entire data packet is demodulated to receive the transmitted data.

IPRDB