公开(公告)号：BR9902667A

公开(公告)日：2000-03-14

申请号：BR9902667

申请日：1999-07-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KANNELL GEORGE KENNETH ,  MYER ROBERT EVAN ,  SREENATH KRISHNAMURTHY

IPC: H03C3/00 ,  H03C1/06 ,  H03D7/00 ,  H04B1/04 ,  H04B1/26

Abstract: A method for reducing the level of an undesired signal, generated through a frequency converter device, is implemented by a local oscillator (hereinafter "LO") leak cancellation circuit. A feedback correction loop, for a radio frequency (RF) transmitter or receiver, reduces an undesired local oscillator leak generated through a single input frequency converter device (20), such as a mixer, by a unique detection circuit (30). A unique nulling circuit (40) is also implemented for a multiple input frequency converter device, such as a quadrature modulator.

公开(公告)号：BR9805344A

公开(公告)日：1999-11-09

申请号：BR9805344

申请日：1998-12-14

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MYER ROBERT EVAN

IPC: H03G1/04 ,  H03F1/32

Abstract: The present invention provides an improved pilot detection technique for a control system (200) comprising an electrical circuit (108) that produces distortion and which applies the pilot signal to the electrical circuit and uses information obtained from the pilot signal to cancel the distortion from the electrical circuit.

公开(公告)号：BR9805330A

公开(公告)日：1999-11-09

申请号：BR9805330

申请日：1998-12-11

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MYER ROBERT EVAN

IPC: H03F1/32

Abstract: The present invention is a feed forward circuit (100) and method for reducing distortion added to an output signal by its amplifier (110) without increasing the time delay in the main circuit path of the feed forward circuit. This is accomplished using a pre-distortion circuit (123) to introduce a pre-distortion signal to the input signal of a correction amplifier (124). The pre-distortion signal is used to cancel a distortion signal that will be introduced by the correction amplifier. The pre-distortion signal has approximately the same frequency and amplitude as the distortion signal. The pre-distortion signal, however, has a phase difference of approximately 180 DEG with respect to the distortion signal such that the pre-distortion signal and the distortion signal cancel each other when combined.

公开(公告)号：CA2254456A1

公开(公告)日：1999-06-18

申请号：CA2254456

申请日：1998-11-25

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ZIESSE NORMAN GERARD ,  MYER ROBERT EVAN ,  MONTGOMERY ROBERT KEITH ,  PATEL MOHAN ,  DONALDSON JIMMIE L

IPC: H03F3/60 ,  H03F1/32 ,  H03F1/42 ,  H04Q7/22 ,  H04Q7/24 ,  H04Q7/26 ,  H04Q7/30 ,  H03F3/189 ,  H04N5/067 ,  H03F3/20 ,  H04B1/62

Abstract: A modularly-partitioned feedforward multicarrier linear RF power amplifier is de scribed. The circuitry and components of the power amplifier are segregated into physical ly-separate modules in accordance with several criteria. In one embodiment, the power amplif ier is segregated into a RF power module, a linearizer module and a DC power supply mod ule. The RF power module includes power- and frequency- dependent components and generally v aries with the carrier frequency and output power requirements for a specific application. The linearizer module includes circuitry and components that are substantially power- and frequ ency-independent. As such, the linearizer module is substantially invariant and a single design ma y be used for virtually any application. The DC power supply module includes circuit and components that are substantially frequency independent but somewhat power power dependent. The DC power supply module may vary from amplifier to amplifier where there is a significant change in output power requirements.

公开(公告)号：CA2194924A1

公开(公告)日：1997-08-17

申请号：CA2194924

申请日：1997-01-13

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MYER ROBERT EVAN ,  WEN JACK CHI-CHIEH

IPC: H04W4/12 ,  H04W4/24 ,  H04W76/04 ,  H04W84/02 ,  H04Q7/20 ,  H04Q7/12

Abstract: A wireless communication system or method capable of providing both a two-way telephone service and a two-way paging service on the same infrastructure. The system or method is capable of distinguishing whether a subscriber is a telephone or paging subscriber. If the subscriber is a two-way paging subscriber, the system or method allows the calling party to have the capability of conversing directly with the called party for a limited time or the options of leaving voice, numeric or alphanumeric messages for the called party to retrieve later.

公开(公告)号：DE60043683D1

公开(公告)日：2010-03-04

申请号：DE60043683

申请日：2000-08-07

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GHANADAN REZA ,  MYER ROBERT EVAN

IPC: H03F1/32 ,  H03G1/04

Abstract: A gain and phase control system performs a gain (or phase) adjustment based on the results of a previous gain (or phase) adjustment after an intervening phase (or gain) adjustment. A gain adjustment is based on the results of a previous gain adjustment rather than on the results of an intervening phase adjustment. A phase adjustment is based on the results of a previous phase adjustment rather than the results of an intervening gain adjustment. As such, the above-mentioned increase in error signal does not occur because a gain adjustment is based on the results of the previous gain adjustment, and a phase adjustment is based on the results of the previous phase adjustments. In accordance with another aspect of the present invention, the gain and phase control system makes a gain (or phase) adjustment in parallel with detecting the results from a previous phase (or gain) adjustment, thereby taking advantage of the delay between adjustment and detection of the resulting error signal to improve the convergence rate. For example, the gain and phase control system can perform single alternating gain and phase adjustments and make a gain (or phase) adjustment while detecting the error signal resulting from a preceding phase (or gain) adjustment. When the error signal resulting from the gain (or phase) adjustment is being detected, the gain and phase control system makes a phase (or gain) adjustment using the results detected from the preceding phase (or gain) adjustment.

公开(公告)号：CA2279444C

公开(公告)日：2005-11-29

申请号：CA2279444

申请日：1999-07-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MYER ROBERT EVAN

IPC: H03F1/32 ,  G05B11/30 ,  G05B23/00 ,  H03F3/66 ,  H03G1/04 ,  H03L7/00 ,  H04B1/12 ,  H04B3/10 ,  H04B15/00 ,  H04L27/36

Abstract: A control system comprising an electrical circuit that produces distortion where the electrical circuit has a frequency band of operation. Double side band pilot signals are located slightly outside the boundaries of the frequency band of operation s o as not to interfere with any signals within the frequency band of operation, but still provide information that the control system uses to substantially cancel the distortion.

公开(公告)号：CA2315583C

公开(公告)日：2005-02-08

申请号：CA2315583

申请日：2000-08-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GHANADAN REZA ,  MYER ROBERT EVAN

IPC: H03G1/04 ,  H03F1/32 ,  H03G9/00 ,  H03F1/26

Abstract: A gain and phase control system performs a gain (or phase) adjustment bas ed on the results of a previous gain (or phase) adjustment after an intervening phase (or gain) adjustment. A gain adjustment is based on the results of a previous ga in adjustment rather than on the results of an intervening phase adjustment. A phase adjustment is based on the results of a previous phase adjustment rather tha n the results of an intervening gain adjustment. As such, the above-mentioned increase in error signal does not occur because a gain adjustment is based on the result s of the previous gain adjustment, and a phase adjustment is based on the results of the previous phase adjustments. In accordance with another aspect of the present invention, the gain and phase control system makes a gain (or phase) adjustment in parallel with detecting the results from a previous phase (or gain) adjustment, thereby taking advantage of the delay between adjustment and detection of the resulting error signal to improve the convergence rate. For example, the gain and phase control system can perform single alternating gain and phase adjustments and make a gain (or phase) adjustment while detecting the error signal resulting from a precedin g phase (or gain) adjustment. When the error signal resulting from the gain (or phas e) adjustment is being detected, the gain and phase control system makes a phas e (or gain) adjustment using the results detected from the preceding phase (or gai n) adjustment.

公开(公告)号：AU765299B2

公开(公告)日：2003-09-11

申请号：AU5196800

申请日：2000-08-11

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GHANADAN REZA ,  MYER ROBERT EVAN

IPC: H03G1/04 ,  H03F1/32 ,  H03L7/06

Abstract: A gain and phase control system performs a gain (or phase) adjustment based on the results of a previous gain (or phase) adjustment after an intervening phase (or gain) adjustment. A gain adjustment is based on the results of a previous gain adjustment rather than on the results of an intervening phase adjustment. A phase adjustment is based on the results of a previous phase adjustment rather than the results of an intervening gain adjustment. As such, the above-mentioned increase in error signal does not occur because a gain adjustment is based on the results of the previous gain adjustment, and a phase adjustment is based on the results of the previous phase adjustments. In accordance with another aspect of the present invention, the gain and phase control system makes a gain (or phase) adjustment in parallel with detecting the results from a previous phase (or gain) adjustment, thereby taking advantage of the delay between adjustment and detection of the resulting error signal to improve the convergence rate. For example, the gain and phase control system can perform single alternating gain and phase adjustments and make a gain (or phase) adjustment while detecting the error signal resulting from a preceding phase (or gain) adjustment. When the error signal resulting from the gain (or phase) adjustment is being detected, the gain and phase control system makes a phase (or gain) adjustment using the results detected from the preceding phase (or gain) adjustment.

公开(公告)号：AU764137B2

公开(公告)日：2003-08-14

申请号：AU4888499

申请日：1999-09-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MYER ROBERT EVAN ,  PATEL MOHAN

IPC: H03L7/00 ,  H03F1/32 ,  H04B1/12 ,  H04B3/10 ,  H03L7/24 ,  H03C1/00

Abstract: A control system comprising an electrical circuit that produces distortion where the electrical circuit has a frequency band of operation. A pilot modulated carrier signal is generated and is cause to traverse across the frequency band of operation of the electrical circuit. Information obtained from the traversing pilot modulated carrier signal when it is determined that there is no interference between any signal applied to or generated by the electrical circuit. The information is used by the control system to substantially cancel the distortion.