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公开(公告)号：FI973994A0
公开(公告)日：1997-10-17
申请号：FI973994
申请日：1997-10-17
Applicant: QUALCOMM INC
Inventor： KORNFELD RICHARD K
Abstract: The process and apparatus of the present invention limits the output power of a radio in response to the temperature of key components of the radio. Temperature sensors (1025) measure the temperature of the components and send the temperature signals to power control circuitry (1030). The transmit power is measured (1020) at the output of the power amplifier (1015). As the temperature increases, the power control circuitry (1030) reduces the transmit power to reduce the temperature of the key components. The power is monitored so that it is not reduced below the power level required by standards.
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公开(公告)号：FI971244A
公开(公告)日：1997-05-30
申请号：FI971244
申请日：1997-03-25
Applicant: QUALCOMM INC
Inventor： KORNFELD RICHARD K , WHEATLEY III CHARLES E
IPC: H04B1/38 , H04B1/40 , H04B7/005 , H04B7/12 , H04B7/208 , H04B7/26 , H04J1/04 , H04L1/04 , H04L5/06 , H04Q11/02 , H04W36/14 , H04W36/18 , H04B
Abstract: The dual band code division multiple access radio of the present invention operates on multiple frequencies simultaneously on either transmit or receive. The transmit path operates by splitting the transmit intermediate frequency (IF) path (103) and mixing the IF to two different transmit frequencies using two frequency synthesizers (140 and 145). The receive path (104) has two RF channels (116 and 117) that are mixed with the frequencies generated by the synthesizers (140 and 145) and summed into one IF strip. Thus the radio of the present invention can perform a soft hand-off between frequencies while communicating with both base stations simultaneously. Additional mixing paths and synthesizers can be added if it is desired to communicate with more than two base stations simultaneously.\!
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公开(公告)号：DE69535799D1
公开(公告)日：2008-09-11
申请号：DE69535799
申请日：1995-12-11
Applicant: QUALCOMM INC
Inventor： WHEATLEY CHARLES E III , PETERZELL PAUL E , KORNFELD RICHARD K , WEILAND ANA L
IPC: H04B1/06 , H04B7/005 , H03G1/00 , H03G3/30 , H04B20060101 , H04B1/10 , H04B1/16 , H04B1/18 , H04B1/40 , H04B1/7075 , H04B1/7097 , H04B3/06 , H04B7/26 , H04B15/00
Abstract: An apparatus to increase a radio receiver's immunity to radio frequency interference, the radio receiver receiving a signal, the apparatus comprising: a switch (1105) coupled to the received signal, the switch (1105) having an open position and a closed position; a resistance (1101), a first end of the resistance (1101) being coupled to the closed position of the switch (1105) and a second end of the resistance (1101) being coupled to a ground potential; an amplifier (1101) having an input coupled to the open position of the switch (1105), for generating an amplified received signal at an output; a controller coupled to the switch (1105), for switching the switch (1105) to the closed position in response to the received signal exceeding a predetermined power level, said received signal conducting through said switch (1105) and said resistance (1101) to ground potential when said switch (1105) is in said closed position; and said resistance (1101) creating an impedance mismatch at the input to said amplifier (1110) when said switch (1105) is in closed position, thereby reducing the gain contributed by said amplifier (1110).
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公开(公告)号：MY124544A
公开(公告)日：2006-06-30
申请号：MYPI19965475
申请日：1996-12-26
Applicant: QUALCOMM INC
Inventor： WHEATLEY CHARLES E III , CAMARILLO RICHARD J , WHITE KATHERINE W , KORNFELD RICHARD K
IPC: H01J13/00 , H03F1/02 , H03F99/00 , H03F1/32 , H03F3/60 , H03F3/68 , H03F3/72 , H03G3/02 , H03G3/30 , H04B1/04 , H04B7/26 , H04J13/00
Abstract: AN AMPLIFIER CIRCUIT (40) FOR PROVIDING AN AMPLIFIED SIGNAL IN RESPONSE TO AN INPUT SIGNAL. THE AMPLIFIER CIRCUIT (40) INCLUDES AN INPUT NETWORK (44) FOR APPLYING THE INPUT SIGNAL TO A SELECTED AT LEAST ONE OF A PLURALITY OF AMPLIFIER STAGES (A1 ? A4). AN OUTPUT NETWORK (48) IS PROVIDED FOR COUPLING THE AMPLIFIED SIGNAL FROM THE SELECTED AT LEAST ONE AMPLIFIER STAGE (A1 ? A4). THE APPROPRIATE AMPLIFIER STAGE (A1 ? A4) IS SELECTED BY A CONTROL CIRCUIT (56) IN RESPONSE TO A DESIRED POWER VALUE OF THE AMPLIFIED SIGNAL. BY SELECTIVELY ACTIVATING ONLY THE AMPLIFIER STAGE (A1 ? A4) THAT ARE NECESSARY TO PROVIDE THE DESIRED LEVEL OF OUTPUT POWER, INCREASED DC EFFICIENCY CAN BE ACCOMPLISHED IN APPLICATIONS THAT REQUIRE AN AMPLIFIER WHICH OPERATES LINEARLY OVER A WIDE DYNAMIC RANGE.(FIG. 2)
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Patent Agency Ranking
公开(公告)号：AT274260T
公开(公告)日：2004-09-15
申请号：AT95943046
申请日：1995-12-11
Applicant: QUALCOMM INC
Inventor： WHEATLEY CHARLES E III , PETERZELL PAUL E , KORNFELD RICHARD K , WEILAND ANA L
IPC: H04B1/06 , H03G1/00 , H03G3/30 , H04B20060101 , H04B1/10 , H04B1/16 , H04B1/18 , H04B1/40 , H04B1/7075 , H04B1/7097 , H04B3/06 , H04B7/005 , H04B7/26 , H04B15/00
Abstract: An apparatus to increase a radio receiver's immunity to radio frequency interference, the radio receiver receiving a signal, the apparatus comprising: a switch (1105) coupled to the received signal, the switch (1105) having an open position and a closed position; a resistance (1101), a first end of the resistance (1101) being coupled to the closed position of the switch (1105) and a second end of the resistance (1101) being coupled to a ground potential; an amplifier (1101) having an input coupled to the open position of the switch (1105), for generating an amplified received signal at an output; a controller coupled to the switch (1105), for switching the switch (1105) to the closed position in response to the received signal exceeding a predetermined power level, said received signal conducting through said switch (1105) and said resistance (1101) to ground potential when said switch (1105) is in said closed position; and said resistance (1101) creating an impedance mismatch at the input to said amplifier (1110) when said switch (1105) is in closed position, thereby reducing the gain contributed by said amplifier (1110).
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公开(公告)号：IN192676B
公开(公告)日：2004-05-15
申请号：IN1551MA1995
申请日：1995-11-27
Applicant: QUALCOMM INC
Inventor： PETERZELL PAUL E , WHEATLEY CHARLES E , KORNFELD RICHARD K , WEILAND ANA L
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公开(公告)号：ES2198506T3
公开(公告)日：2004-02-01
申请号：ES96944497
申请日：1996-12-26
Applicant: QUALCOMM INC
Inventor： KORNFELD RICHARD K , WHEATLEY CHARLES E III , CAMARILLO RICHARD J , WHITE KATHERINE W
IPC: H03F99/00 , H03F1/02 , H03F1/32 , H03F3/60 , H03F3/68 , H03F3/72 , H03G3/02 , H03G3/30 , H04B1/04 , H04B7/26 , H04J13/00
Abstract: An amplifier circuit for providing an amplified signal in response to an input signal. The amplifier circuit includes an input network for applying the input signal to a selected at least one of a plurality of amplifier stages. An output network is provided for coupling the amplified signal from the selected at least one amplifier stage. The appropriate amplifier stage is selected by a control circuit in response to a desired power value of the amplified signal. By selectively activating only the amplifier stage(s) that are necessary to provide the desired level of output power, increased DC efficiency can be accomplished in applications that require an amplifier which operates linearly over a wide dynamic range.
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公开(公告)号：FI112564B
公开(公告)日：2003-12-15
申请号：FI955072
申请日：1995-10-25
Applicant: QUALCOMM INC
Inventor： WEILAND ANA L , KORNFELD RICHARD K , KERR RICHARD J , MALONEY JOHN E , WILSON NATHANIEL B
Abstract: The process and apparatus of the present invention limits the output power of a radiotelephone, operating in a cellular system in the preferred embodiment. This ensures the transmitted sidebands and synthesizer phase noise remains within a certain specification. This is accomplished by power detection and a correction accumulator that together generate a gain control signal by limiting the gain adjustment to a maximum value, even when the cell site communicating with the radiotelephone is sending power turn-up commands to the radiotelephone. This process includes dynamically correcting the output level of the transmitter due to gain variations in the transmitter stages or gain control elements.
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公开(公告)号：DK0870361T3
公开(公告)日：2003-06-23
申请号：DK96944497
申请日：1996-12-26
Applicant: QUALCOMM INC
Inventor： KORNFELD RICHARD K , WHEATLEY CHARLES E III , CAMARILLO RICHARD J , WHITE KATHERINE W
IPC: H03F99/00 , H03F1/02 , H03F1/32 , H03F3/60 , H03F3/68 , H03F3/72 , H03G3/02 , H03G3/30 , H04B1/04 , H04B7/26 , H04J13/00
Abstract: An amplifier circuit for providing an amplified signal in response to an input signal. The amplifier circuit includes an input network for applying the input signal to a selected at least one of a plurality of amplifier stages. An output network is provided for coupling the amplified signal from the selected at least one amplifier stage. The appropriate amplifier stage is selected by a control circuit in response to a desired power value of the amplified signal. By selectively activating only the amplifier stage(s) that are necessary to provide the desired level of output power, increased DC efficiency can be accomplished in applications that require an amplifier which operates linearly over a wide dynamic range.
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