Apparatus for and method of transmitting high efficiency variable power

• US 8,971,399 B2
• Filed: 05/29/2012
• Issued: 03/03/2015
• Est. Priority Date: 05/27/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kwon, Sang Wook, Choi, Jin Sung, Kim, Ki Young, Kim, Nam Yun, Kim, Dong Zo, Park, Yun Kwon, Park, Eun Seok, Ryu, Young Ho, Yoon, Chang Wook, Hong, Young Tack
• Primary Examiner(s): LAM, KENNETH T
• Application Number:
  US13/482,027
• Publication Number:
  US 20120300875A1
• Time in Patent Office: 1,008 Days
• Field of Search: 375/238, 375/295, 375/316, 375/319, 375/297, 375/219, 375/300, 375/302
• US Class Current: 375/238
• CPC Class Codes: H04L 25/0384 Design of pulse shapes pulse shape for impulse radio H04B1/7172

Abstract

An apparatus for transmitting a high efficiency variable power includes a pulse generating unit configured to generate a pulse signal comprising a pulse having a duration corresponding to an amount of power transmitted; a pulse stream generating unit configured to convert the pulse signal to a pulse stream having pulse shape corresponding to the duration of the pulse and data to be transmitted; and a high frequency modulating unit configured to output a variable power by modulating a high frequency signal having a constant amplitude on a time axis by repeatedly outputting and not outputting the high frequency signal based on the pulse stream.

Claims

1. An apparatus for transmitting a high efficiency variable power, the apparatus comprising:

a pulse generating unit configured to generate a pulse signal comprising a pulse having a duration corresponding to an amount of power to be transmitted;

a pulse stream generating unit configured to convert the pulse signal to a pulse stream having a pulse shape corresponding to the duration of the pulse and data to be transmitted by adjusting a pulse position of the pulse signal; and

a high frequency modulating unit configured to output a variable power by modulating a high frequency signal having a constant amplitude on a time axis by repeatedly outputting and not outputting the high frequency signal based on the pulse stream.

2. The apparatus of claim 1, wherein the pulse stream generating unit is further configured to:

search for a pulse shape corresponding to the duration of the pulse and the data to be transmitted in a table in which pulse shapes are mapped to durations and data; and

convert the pulse signal to the pulse stream using the pulse shape found in the search.

3. The apparatus of claim 1, wherein the pulse stream generating unit is further configured to insert a training sequence indicating a beginning of the pulse stream at the beginning of the pulse stream generated from the pulse signal.

4. The apparatus of claim 1, wherein the pulse signal has a predetermined period;

and

the duration of the pulse is less than the predetermined period.

5. The apparatus of claim 1, wherein the amount of power to be transmitted is an amount of power requested by a target device to which power is to be transmitted by the apparatus.

6. A method of transmitting a high efficiency variable power, the method comprising:

generating a pulse signal comprising a pulse having a duration corresponding to an amount of power to be transmitted;

converting the pulse signal to a pulse stream having a pulse corresponding to the duration of the pulse and data to be transmitted by adjusting a pulse position of the pulse signal; and

outputting a variable power by modulating a high frequency signal having a constant amplitude on a time axis by repeatedly outputting and not outputting the high frequency signal based on the pulse stream.

7. The method of claim 6, wherein the converting comprises:

searching for a pulse shape corresponding to the duration of the pulse and the data to be transmitted in a table in which pulse shapes are mapped to durations and data; and

converting the pulse signal to the pulse stream using the pulse shape found in the search.

8. The method of claim 6, wherein the converting comprises inserting a training sequence indicating a beginning of the pulse stream at the beginning of the pulse stream generated from the pulse signal.

9. The method of claim 6, wherein the pulse signal has a predetermined period;

and

the duration of the pulse is less than the predetermined period.

10. The method of claim 6, wherein the amount of power to be transmitted is an amount of power requested by a target device to which power is to be transmitted.