Method and system for attenuator phase compensation

Patent metadata

Field	Value
Publication number	US-10659009-B2
Application number	US-201615224933-A
Country	US
Kind code	B2
Filing date	Aug 1, 2016
Priority date	Aug 1, 2016
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

Embodiments of methods and systems for attenuator phase compensation are described. In an embodiment, a method for attenuator phase compensation involves determining a phase compensation value for an attenuator based on an attenuation configuration of the attenuator and performing phase compensation according to the phase compensation value to maintain a constant phase response.

First claim

What is claimed is:

1. A method for attenuator phase compensation, the method comprising:
determining a phase compensation value for an attenuator based on a function of a received attenuation configuration of the attenuator, wherein the received attenuation configuration of the attenuator comprises an adjustable impedance value of the attenuator; and
performing phase compensation according to the phase compensation value to maintain a constant phase response.

2. The method of claim 1 , wherein determining the phase compensation value for the attenuator comprises determining the phase compensation value for the attenuator from a predetermined table of different phase compensation values and attenuation configurations of the attenuator.

3. The method of claim 1 , wherein determining the phase compensation value for the attenuator comprises determining the phase compensation value for the attenuator from a predetermined table of different phase compensation values and adjustable impedance configurations of the attenuator based on the adjustable impedance value of the attenuator.

4. The method of claim 1 , wherein the received attenuation configuration of the attenuator comprises the attenuation factor code of the attenuator.

5. The method of claim 4 , wherein determining the phase compensation value for the attenuator comprises determining the phase compensation value for the attenuator from a predetermined table of different phase compensation values and attenuation factor codes of the attenuator.

6. The method of claim 4 , wherein determining the phase compensation value for the attenuator comprises determining the phase compensation value for the attenuator based on a function of the attenuation factor code of the attenuator.

7. A system for attenuator phase compensation, the system comprising:
a phase compensation determination unit configured to determine a phase compensation value for an attenuator based on a function of a received attenuation configuration of the attenuator, wherein the received attenuation configuration of the attenuator comprises an adjustable impedance value of the attenuator; and
a phase compensation unit configured to perform phase compensation according to the phase compensation value to maintain a constant phase response.

8. The system of claim 7 , wherein the phase compensation determination unit is further configured to determine the phase compensation value for the attenuator from a predetermined table of different phase compensation values and attenuation configurations of the attenuator.

9. The system of claim 7 , wherein the phase compensation determination unit is further configured to determine the phase compensation value for the attenuator from a predetermined table of different phase compensation values and adjustable impedance configurations of the attenuator based on the adjustable impedance value of the attenuator.

10. The system of claim 7 , wherein the received attenuation configuration of the attenuator comprises the attenuation factor code of the attenuator.

11. The system of claim 10 , wherein the phase compensation determination unit is further configured to determine the phase compensation value for the attenuator from a predetermined table of different phase compensation values and attenuation factor codes of the attenuator.

12. The system of claim 10 , wherein the phase compensation determination unit is further configured to determine the phase compensation value for the attenuator based on a function of the attenuation factor code of the attenuator.

13. A method for attenuator phase compensation in a communications device that communicates via inductive coupling, the method comprising:
determining a phase compensation value for an attenuator that is located in a receiver path of the communications device based on a function of a received attenuation configuration of the attenuator, wherein the received attenuation configuration of the attenuator comprises an adjustable impedance value of the attenuator; and
performing phase compensation according to the phase compensation value to maintain a constant phase response of the attenuator.

14. The method of claim 13 , wherein determining the phase compensation value for the attenuator comprises determining the phase compensation value for the attenuator from a predetermined table of different phase compensation values and attenuation configurations of the attenuator.

15. The method of claim 13 , wherein the received attenuation configuration of the attenuator comprises the attenuation factor code of the attenuator.

Assignees

• Nxp Bv

Inventors

• Hueber Gernot
• Macnamara Ian Thomas

Classifications

• H03K2005/00286

  Phase shifter, i.e. the delay between the output and input pulse is dependent on the frequency, and such that a phase difference is obtained independent of the frequency · CPC title

• H03G1/0035

  using continuously variable impedance elements · CPC title

• H03G3/3036 Primary

  in high-frequency amplifiers or in frequency-changers (H03G3/3052, H03G3/32, H03G3/34 take precedence) · CPC title

• H03H2210/017

  Amplitude, gain or attenuation · CPC title

• H03H11/24 Primary

  Frequency-independent attenuators · CPC title