公开(公告)号：DE69904169T2

公开(公告)日：2003-06-12

申请号：DE69904169

申请日：1999-05-27

Applicant: ERICSSON TELEFON AB L M

Inventor： KHULLAR ANDERS ,  GRAHM TORBJOERN ,  GAERDENFORS TORBJOERN ,  SEDVALLSON SEBASTIAN

IPC: H03G3/30 ,  H03M3/02 ,  H03M7/00

Abstract: In order to increase the resolution of signals input to a power amplifier, this system includes a power control circuit which utilizes sigma delta modulated values which are stored in a memory device. These values, after retrieval from an addressable memory, are supplied only to a low pass filter before being sent to the control input of the power amplifier. The use of sigma delta modulated values can result in a reduction of hardware within the power control circuit of communication devices and increase the signal resolution by moving noise elements from the signal.

公开(公告)号：HK1040007A1

公开(公告)日：2002-05-17

申请号：HK02101205

申请日：2002-02-19

Applicant: ERICSSON TELEFON AB L M

Inventor： KHULLAR ANDERS ,  GRAHM TORBJORN ,  GARDENFORS TORBJORN ,  SEDVALLSON SEBASTIAN

IPC: H03G3/30 ,  H03M3/02 ,  H03M7/00 ,  H03G ,  H03M

Abstract: In order to increase the resolution of signals input to a power amplifier, this system includes a power control circuit which utilizes sigma delta modulated values which are stored in a memory device. These values, after retrieval from an addressable memory, are supplied only to a low pass filter before being sent to the control input of the power amplifier. The use of sigma delta modulated values can result in a reduction of hardware within the power control circuit of communication devices and increase the signal resolution by moving noise elements from the signal.

公开(公告)号：DE69904169D1

公开(公告)日：2003-01-09

申请号：DE69904169

申请日：1999-05-27

Applicant: ERICSSON TELEFON AB L M

Inventor： KHULLAR ANDERS ,  GRAHM TORBJOERN ,  GAERDENFORS TORBJOERN ,  SEDVALLSON SEBASTIAN

IPC: H03G3/30 ,  H03M3/02 ,  H03M7/00

Abstract: In order to increase the resolution of signals input to a power amplifier, this system includes a power control circuit which utilizes sigma delta modulated values which are stored in a memory device. These values, after retrieval from an addressable memory, are supplied only to a low pass filter before being sent to the control input of the power amplifier. The use of sigma delta modulated values can result in a reduction of hardware within the power control circuit of communication devices and increase the signal resolution by moving noise elements from the signal.

公开(公告)号：AT228730T

公开(公告)日：2002-12-15

申请号：AT99930032

申请日：1999-05-27

Applicant: ERICSSON TELEFON AB L M

Inventor： KHULLAR ANDERS ,  GRAHM TORBJOERN ,  GAERDENFORS TORBJOERN ,  SEDVALLSON SEBASTIAN

IPC: H03G3/30 ,  H03M3/02 ,  H03M7/00

Abstract: In order to increase the resolution of signals input to a power amplifier, this system includes a power control circuit which utilizes sigma delta modulated values which are stored in a memory device. These values, after retrieval from an addressable memory, are supplied only to a low pass filter before being sent to the control input of the power amplifier. The use of sigma delta modulated values can result in a reduction of hardware within the power control circuit of communication devices and increase the signal resolution by moving noise elements from the signal.

公开(公告)号：EE200000692A

公开(公告)日：2002-04-15

申请号：EEP200000692

申请日：1999-05-27

Applicant: ERICSSON TELEFON AB L M

Inventor： GAERDENFORS KARL HAAKAN TORBJO ,  KHULLAR ANDERS ,  GRAHM TORBJOERN ,  SEDVALLSON SEBASTIAN

IPC: H03G3/30 ,  H03M3/02 ,  H03M7/00

Abstract: In order to increase the resolution of signals input to a power amplifier, this system includes a power control circuit which utilizes sigma delta modulated values which are stored in a memory device. These values, after retrieval from an addressable memory, are supplied only to a low pass filter before being sent to the control input of the power amplifier. The use of sigma delta modulated values can result in a reduction of hardware within the power control circuit of communication devices and increase the signal resolution by moving noise elements from the signal.

公开(公告)号：AU4664799A

公开(公告)日：1999-12-20

申请号：AU4664799

申请日：1999-05-27

Applicant: ERICSSON TELEFON AB L M

Inventor： KHULLAR ANDERS ,  GRAHM TORBJORN ,  GARDENFORS TORBJORN ,  SEDVALLSON SEBASTIAN

IPC: H03G3/30 ,  H03M3/02 ,  H03M7/00

Abstract: In order to increase the resolution of signals input to a power amplifier, this system includes a power control circuit which utilizes sigma delta modulated values which are stored in a memory device. These values, after retrieval from an addressable memory, are supplied only to a low pass filter before being sent to the control input of the power amplifier. The use of sigma delta modulated values can result in a reduction of hardware within the power control circuit of communication devices and increase the signal resolution by moving noise elements from the signal.