Receiver and receiving method of receiver

Patent metadata

Field	Value
Publication number	US-10911087-B2
Application number	US-201916442572-A
Country	US
Kind code	B2
Filing date	Jun 17, 2019
Priority date	Jul 14, 2011
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

A receiver and a receiving method of the receiver such that monolithic integration of multiple receiving channels can be implemented. The receiver includes a zero intermediate frequency channel, performing in-phase/quadrature (IQ) down conversion on a radio frequency signal at a first frequency band using a frequency division or frequency multiplication signal of a first signal, and a superheterodyne channel, performing down conversion on a radio frequency signal at a second frequency band using the frequency division or frequency multiplication signal of the first signal, where the first frequency band is different from the second frequency band. The zero intermediate frequency channel and the superheterodyne channel use a same oscillation signal or a same frequency division or frequency multiplication signal of the oscillation signal, thereby monolithic integration of multiple receiving channels can be implemented.

First claim

What is claimed is:

1. A radio frequency receiver, comprising:
a zero intermediate frequency channel, and a superheterodyne channel,
wherein the zero intermediate frequency channel comprises:
a first local oscillator and a first frequency mixer coupled to the first local oscillator;
wherein the first local oscillator is configured to:
receive a first signal; and
generate a first in-phase/quadrature (IQ) local oscillation signal according to the first signal;

wherein the first frequency mixer is configured to:
receive the first IQ local oscillation signal from the first local oscillator; and
generate a first baseband signal by performing an IQ down conversion on a radio frequency signal at a first frequency band using the first IQ local oscillation signal;

wherein the superheterodyne channel comprises:
a second local oscillator and a second frequency mixer coupled to the second local oscillator;
wherein the second local oscillator is configured to:
receive the first signal; and
generate a first intermediate frequency local oscillation signal according to the first signal;

wherein the second frequency mixer is configured to:
receive the first intermediate frequency local oscillation signal from the second local oscillator; and
generate a first intermediate frequency signal by performing a down conversion on a radio frequency signal at a second frequency band using the first intermediate frequency local oscillation signal;

wherein the zero intermediate frequency channel and the superheterodyne channel are configured to work concurrently.

2. The radio frequency receiver according to claim 1 , wherein in generating the first IQ local oscillation signal according to the first signal, the first local oscillator is configured to:
generate the first IQ local oscillation signal by performing a frequency division or a frequency multiplication on the first signal.

3. The radio frequency receiver according to claim 1 , wherein in generating the first intermediate frequency local oscillation signal according to the first signal, the second local oscillator is configured to:
generate the first intermediate frequency local oscillation signal by performing a frequency division or a frequency multiplication on the first signal.

4. The radio frequency receiver according to claim 1 , wherein the zero intermediate frequency channel and the superheterodyne channel are monolithically integrated in a same chip of the radio frequency receiver.

5. The radio frequency receiver according to claim 1 , further comprising:
at least one Analog-Digital Converter (ADC) coupled to the first frequency mixer and the second frequency mixer;

wherein the ADC is configured to:
perform an analog-to-digital conversion on the first baseband signal and the first intermediate frequency signal.

6. The radio frequency receiver according to claim 5 , wherein the at least one ADC, the zero intermediate frequency channel, and the superheterodyne channel are monolithically integrated in a same chip of the radio frequency receiver.

7. The radio frequency receiver according to claim 5 , wherein the at least one ADC comprises:
a first ADC coupled to the first frequency mixer and configured to:
sample the first baseband signal; and
perform the analog-to-digital conversion on the first baseband signal;

and a second ADC coupled to the second frequency mixer and configured to:
sample the first intermediate frequency signal; and
perform the analog-to-digital conversion on the first intermediate frequency signal.

8. The radio frequency receiver according to claim 1 , further comprising at least one antenna coupled to the zero intermediate frequency channel and the superheterodyne channel, wherein the at least one antenna is configured to concurrently receive the radio frequency signal at the first frequency band and the radio frequency signal at the second frequency band.

9. The radio frequency receiver according to claim 1 , further comprising an oscillator coupled to the first local oscillator and the second local oscillator, and configured to generate the first signal.

10. The radio frequency receiver according to claim 1 , wherein the first signal is received from an oscillator outside the radio frequency receiver.

11. The radio frequency receiver according to claim 1 , wherein the radio frequency receiver is a component of a mobile terminal.

12. The radio frequency receiver according to claim 1 , wherein the first frequency band belongs to a first cellular communication system, and the second frequency band belongs to a second cellular communication system different from the first cellular communication system.

13. The radio frequency receiver according to claim 12 , wherein the first cellular communication system is a second Generation (2G), third Generation (3G) or fourth Generation (4G) communication system.

14. The radio frequency receiver according to claim 13 ,
wherein the 4G communication system is a long-term evolution (LTE) communication system.

15. A method implemented in a radio frequency receiver, wherein the radio frequency receiver comprises a zero intermediate frequency channel and a superheterodyne channel, and wherein the method comprises:
generating, by a first local oscillator in the zero intermediate frequency channel, a first in-phase/quadrature (IQ) local oscillation signal according to a received first signal;
performing, by a first frequency mixer in the zero intermediate frequency channel, IQ down conversion on a radio frequency signal at a first frequency band using the first IQ local oscillation signal to generate a first baseband signal;
generating, by a second local oscillator in the superheterodyne channel, a first intermediate frequency local oscillation signal according to the first signal; and
performing, by a second frequency mixer in the superheterodyne channel, down conversion on a radio frequency signal at a second frequency band using the first intermediate frequency local oscillation signal to generate a first intermediate frequency signal;
wherein the zero intermediate frequency channel and the superheterodyne channel are configured to work concurrently.

16. The method according to claim 15 , wherein generating the first IQ local oscillation signal comprises:
generating, by the first local oscillator in the zero intermediate frequency channel, the first IQ local oscillation signal by performing a frequency division or a frequency multiplication on the first signal.

17. The method according to claim 15 , wherein generating the first intermediate frequency local oscillation signal comprises:
generating, by the second local oscillator in the superheterodyne channel, the first intermediate frequency local oscillation signal by performing a frequency division or a frequency multiplication on the first signal.

18. The method according to claim 15 , wherein the radio frequency receiver further comprises at least one Analog-Digital Converter (ADC), and the method further comprises:
performing, by the at least one ADC, an analog-to-digital conversion on the first baseband signal and the first intermediate frequency signal.

19. The method according to claim 15 , wherein the first frequency band belongs to a first cellular communication system, and the second frequency band belongs to a second cellular communication system being different from the first cellular communication system.

20. A method for fabricating a radio frequency receiver, comprising:
forming, on a chip,

Assignees

• Huawei Tech Co Ltd

Inventors

• He Zhuobiao
• Wu Jianfeng
• Ma Zhengxiang

Classifications

• H04B1/005 Primary

  adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges · CPC title

• H04B1/26 Primary

  for superheterodyne receivers (multiple frequency-changing H03D7/16) · CPC title

• H04B1/30

  for homodyne or synchrodyne receivers (demodulator circuits H03D1/22) · CPC title

• H04B1/28

  the receiver comprising at least one semiconductor device having three or more electrodes · CPC title

• H04W84/042

  Public Land Mobile systems, e.g. cellular systems · CPC title