发明名称 |
Software programmable cellular radio architecture for wide bandwidth radio systems including telematics and infotainment systems |
摘要 |
A cellular radio architecture that includes a programmable bandpass sampling radio frequency front-end and an optimized digital baseband. The architecture includes a multiplexer having signal paths that include a bandpass filter that passes a different frequency band than the other bandpass filters and a circulator that provides signal isolation between the transmit signals and the receive signals. The architecture also includes a receiver module having a separate signal channel for each of the signal paths in the multiplexer, where each signal channel in the receiver module includes a receiver delta-sigma modulator that converts analog receive signals to a representative digital signal. The architecture further includes a transmitter module having a transmitter delta-sigma modulator for converting digital data bits to analog transmit signals, where the transmitter module includes a power amplifier and a switch for directing the transmit signals to one of the signal paths in the multiplexer. |
申请公布号 |
US9608661(B2) |
申请公布日期 |
2017.03.28 |
申请号 |
US201515103256 |
申请日期 |
2015.11.06 |
申请人 |
GM Global Technology Operations LLC |
发明人 |
Talty Timothy J.;Baringer Cynthia D.;MacDonald Andrew J.;Ahmed Mohiuddin;Cosand Albert E.;Li James Chingwei;Petre Peter;Xu Zhiwei A.;Kuan Yen-Cheng;Pan Hsuanyu;Sovero Emilio A. |
分类号 |
H04B1/40;H03M1/66;H04B1/00;H04B1/04;H04B1/3822;H04L1/00;H03M1/06;H03M1/36;H03M3/00 |
主分类号 |
H04B1/40 |
代理机构 |
Miller IP Group, PLC |
代理人 |
Miller John A.;Miller IP Group, PLC |
主权项 |
1. A transceiver front-end circuit for a cellular radio, said transceiver circuit comprising:
an antenna structure operable to transmit signals and receive signals; a multiplexer coupled to the antenna structure and including a plurality of signal paths, each signal path including a bandpass filter that passes a different frequency band than the other bandpass filters and a circulator that provides signal isolation between the transmit signals and the receive signals; a receiver module including a separate signal channel for each of the signal paths in the multiplexer, each signal channel in the receiver module including a receiver delta-sigma modulator that converts analog receive signals to a representative digital signal; and a transmitter module including a transmitter delta-sigma modulator for converting digital data bits to the transmit signals, said transmitter module including a tunable bandpass filter, a switch for directing the transmit signals to a particular signal path, and a power amplifier in each signal path for amplifying the transmit signal before transmitting. |
地址 |
Detroit MI US |