公开(公告)号：ZA9403837B

公开(公告)日：1995-12-01

申请号：ZA9403837

申请日：1994-06-01

Applicant: QUALCOMM INC

Inventor： PRICE J MICHAEL ,  WHEATLEY CHARLES E III ,  WHITE KATHERINE W

IPC: H03F1/30 ,  H03G1/04 ,  H03G ,  H03F

CPC classification number: H03G1/04 ,  H03F1/301

公开(公告)号：AU7109794A

公开(公告)日：1995-01-03

申请号：AU7109794

申请日：1994-06-14

Applicant: QUALCOMM INC

Inventor： PRICE J MICHAEL ,  WHEATLEY CHARLES III ,  WHITE KATHERINE W

IPC: H03F1/30 ,  H03G1/04

Abstract: A high dynamic range linear automatic gain control (AGC) circuit that has independent means for temperature compensation. The temperature compensation circuit of this invention can be used in a closed-loop AGC circuit such as is required in a transceiver for compensating the gains of receiver and transmitter amplifiers to ensure that both track closely over ranges of temperature, frequency and load impedance. The temperature compensation signal is coupled to one of the two gates in a field effect transistor (FET) amplifier to maintain a constant gain function over ranges of temperature, frequency and load impedance. Thermal compensation for the transmitter amplifier is derived from the thermal compensation signal for the receiver amplifier.

公开(公告)号：ZA943837B

公开(公告)日：1995-12-01

申请号：ZA943837

申请日：1994-06-01

Applicant: QUALCOMM INC

Inventor： PRICE J MICHAEL ,  WHITE KATHERINE W ,  WHEATLEY CHARLES E III

IPC: H03F1/30 ,  H03G1/04 ,  H03G ,  H03F

Abstract: A high dynamic range linear automatic gain control (AGC) circuit that has independent means for temperature compensation. The temperature compensation circuit of this invention can be used in a closed-loop AGC circuit such as is required in a transceiver for compensating the gains of receiver and transmitter amplifiers to ensure that both track closely over ranges of temperature, frequency and load impedance. The temperature compensation signal is coupled to one of the two gates in a field effect transistor (FET) amplifier to maintain a constant gain function over ranges of temperature, frequency and load impedance. Thermal compensation for the transmitter amplifier is derived from the thermal compensation signal for the receiver amplifier.

公开(公告)号：IN184263B

公开(公告)日：2000-07-22

申请号：IN458MA1994

申请日：1994-05-31

Applicant: QUALCOMM INC

Inventor： PRICE J MICHAEL ,  WHEATLEY CHARLES E III ,  WHITE KATHERINE W

IPC: H04B1/38