Apparatus for multi carrier aggregation in a software defined radio

Patent metadata

Field	Value
Publication number	US-10211855-B2
Application number	US-201715407679-A
Country	US
Kind code	B2
Filing date	Jan 17, 2017
Priority date	Jan 17, 2017
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

A apparatus for dynamically modifying filter characteristics of a delta-sigma modulator in order to receive and transmit radio frequency signals over a wide frequency range. The system is used for wide bandwidth radio system designed to adapt to various global radio standards and, more particularly, to a cellular radio architecture that employs a combination of a single circulator, programmable band-pass sampling radio frequency (RF) front-end and optimized digital baseband that is capable of supporting all current cellular wireless access protocol frequency bands.

First claim

What is claimed is:

1. An apparatus comprising:
an antenna for receiving a first RF signal, a second RF signal, a third RF signal and a fourth RF signal;
a first bank of delta sigma analog to digital converters having a first delta sigma analog to digital converter for generating a first digital signal and a second delta signal analog to digital converter for generating a second digital signal;
a second bank of delta sigma analog to digital converters having a third delta sigma analog to digital converter for generating a third digital signal and a fourth delta signal analog to digital converter for generating a fourth digital signal;
a first multiplexer having a first passband and a second passband, wherein the first multiplexer is operative to couple the first RF signal to the first delta sigma analog to digital converter, where the first RF signal has a first center frequency within the first passband, and wherein the first multiplexer is further operative to couple the second RF signal to the second delta sigma analog to digital converter, where the second RF signal has a second center frequency within the second passband;
a second multiplexer having a third passband and a fourth passband, wherein the second multiplexer is operative to couple the third RF signal to the third delta sigma analog to digital converter, where the third RF signal has a third center frequency within the third passband, and wherein the second multiplexer is further operative to couple the fourth RF signal to the fourth delta sigma analog to digital converter, where the fourth RF signal has a fourth center frequency within the fourth passband;
a first switch for coupling the first RF signal and the second RF signal to the first multiplexer and for coupling the third RF signal and the fourth RF signal to the second multiplexer;
a processor for generating a communications data in response to at least one of the first digital signal, the second digital signal, the third digital signal and the fourth digital signal to the processor; and
a second switch for coupling at least one of the first digital signal, the second digital signal, the third digital signal and the fourth digital signal to the processor.

2. The apparatus of claim 1 wherein the processor is a digital signal processor.

3. The apparatus of claim 1 wherein the communications data is used to control an autonomous vehicle.

4. The apparatus of claim 1 wherein the communication data is internet protocol data.

5. The apparatus of claim 1 wherein the communications data is voice data.

6. The apparatus of claim 1 wherein the first bank of delta sigma analog to digital converters are tunable in response to a control signal.

7. The apparatus of claim 1 wherein the second bank of delta sigma analog to digital converters are tunable in response to a control signal.

8. The apparatus of claim 1 wherein the first passband, second passband, third passband and fourth passband form a contiguous frequency band.

9. An apparatus comprising:
an input for receiving a first RF signal and a second RF signal;
a power amplifier for amplifying the first RF signal and the second RF signal;
a source of an LO signal;
a mixer for generating a first IF signal in response to the first RF signal and the LO signal and a second IF signal in response to the second RF signal and the LO signal;
a first delta sigma analog to digital converter to generate a first digital signal in response to the first IF signal;
a second delta sigma analog to digital converter to generate a second digital signal in response to the second IF signal; and
a multiplexer having a first passband and a second passband, wherein the multiplexer is operative to couple the first IF signal to the first delta sigma analog to digital converter, where the first IF signal has a first center frequency within the first passband, and wherein the multiplexer is further operative to couple the second IF signal to the second delta sigma analog to digital converter, where the second IF signal has a second center frequency within the second passband.

10. The apparatus of claim 9 further comprising a processor for decoding the first digital signal and the second digital signal to generate a communication data.

11. The apparatus of claim 10 wherein the communication data is used to control an autonomous vehicle.

12. The apparatus of claim 10 wherein the communication data is internet protocol data.

13. The apparatus of claim 10 wherein the communication data is voice data.

14. The apparatus of claim 9 wherein the first delta sigma analog to digital converter is tunable in response to a control signal.

15. The apparatus of claim 9 wherein the second delta sigma analog to digital converter is tunable in response to a control signal.

16. The apparatus of claim 9 wherein the first passband and the second passband form a contiguous frequency band.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Baringer Cynthia D
• Ahmed Mohiuddin
• Pan Hsuanyu
• Kuan Yen-Cheng
• Li James Chingwei
• Sovero Emilio A
• Talty Timothy J

Classifications

• H04J1/20

  in which at least one carrier is angle-modulated (H04J1/02 takes precedence; FM without multiplex H04B1/00, H04B14/006, H04B15/00; PSK H04L5/12; impulse-modulation without multiplex H04B14/02; time-division multiplexing for data transmission H04L5/22; telemetry G08C15/06 - G08C15/12; telephony H04Q11/00, H04Q11/04, H04Q11/0407) · CPC title

• H04B1/001 Primary

  Channel filtering, i.e. selecting a frequency channel within the SDR system (multiplexing of multicarrier modulation signals being represented by different frequencies H04L5/06; multiplexing of multicarrier modulation signals H04L5/023) · CPC title

• H04B7/2615

  using hybrid frequency-time division multiple access [FDMA-TDMA] · CPC title

• H04L5/001 Primary

  the frequencies being arranged in component carriers · CPC title

• H04L25/03006

  Arrangements for removing intersymbol interference · CPC title