公开(公告)号：US3641441A

公开(公告)日：1972-02-08

申请号：US3641441D

申请日：1969-11-13

Applicant: MOTOROLA INC

Inventor： GUNN DAVID L ,  HANUS GEORGE M

IPC: H03D7/12 ,  H04B1/26

CPC classification number: H03D7/12

Abstract: A frequency conversion circuit for a frequency-modulated receiver adapted to be manufactured in integrated circuit form. The circuit includes an oscillator of the Colpitts type, a mixer arranged in an emitter follower configuration, and input and output amplifiers. A feedback circuit coupled between the input amplifier and mixer allows operation of the circuit over a substantial voltage range. Arrangement of the mixer in an emitter follower configuration results in reduced levels of undesired frequencies. The gain of the input and output amplifiers may be varied allowing usage in different products.

Abstract translation: 一种适用于以集成电路形式制造的频率调制接收机的频率转换电路。 该电路包括Colpitts类型的振荡器，以射极跟随器配置布置的混频器以及输入和输出放大器。 耦合在输入放大器和混频器之间的反馈电路允许电路在相当大的电压范围内运行。 混频器在射极跟随器配置中的排列导致不希望的频率的降低。 可以改变输入和输出放大器的增益，允许在不同产品中使用。

公开(公告)号：US3275938A

公开(公告)日：1966-09-27

申请号：US24984763

申请日：1963-01-07

Applicant: MOTOROLA INC

Inventor： CARSELLO RICHARD D ,  GUNN DAVID L

IPC: H03D3/14

CPC classification number: H03D3/14

公开(公告)号：US3475728A

公开(公告)日：1969-10-28

申请号：US3475728D

申请日：1967-04-24

Applicant: MOTOROLA INC

Inventor： GUNN DAVID L

IPC: H04B1/16 ,  H04W88/02 ,  H04M11/02 ,  H04Q7/02

CPC classification number: H04W88/027 ,  H04B1/1638

公开(公告)号：US3205455A

公开(公告)日：1965-09-07

申请号：US15851361

申请日：1961-12-11

Applicant: MOTOROLA INC

Inventor： GUNN DAVID L ,  CARSELLO RICHARD D

IPC: H03C3/24

CPC classification number: H03C3/245

公开(公告)号：US3263172A

公开(公告)日：1966-07-26

申请号：US28930463

申请日：1963-06-20

Applicant: MOTOROLA INC

Inventor： GUNN DAVID L

IPC: H03F1/52

CPC classification number: H03F1/52

公开(公告)号：US3234469A

公开(公告)日：1966-02-08

申请号：US18072762

申请日：1962-03-19

Applicant: MOTOROLA INC

Inventor： GUNN DAVID L

IPC: H04B1/54

CPC classification number: H04B1/54

公开(公告)号：CA709485A

公开(公告)日：1965-05-11

申请号：CA709485D

Applicant: MOTOROLA INC

Inventor： GUNN DAVID L

公开(公告)号：CA829516A

公开(公告)日：1969-12-09

申请号：CA829516D

Applicant: MOTOROLA INC

Inventor： GUNN DAVID L

公开(公告)号：CA755260A

公开(公告)日：1967-03-21

申请号：CA755260D

Applicant: MOTOROLA INC

Inventor： GUNN DAVID L ,  CARSELLO RICHARD D

公开(公告)号：CA941456A

公开(公告)日：1974-02-05

申请号：CA96159

申请日：1970-10-21

Applicant: MOTOROLA INC

Inventor： GUNN DAVID L ,  HANUS GEORGE M

IPC: H03D7/12

Abstract: A frequency conversion circuit for a frequency-modulated receiver adapted to be manufactured in integrated circuit form. The circuit includes an oscillator of the Colpitts type, a mixer arranged in an emitter follower configuration, and input and output amplifiers. A feedback circuit coupled between the input amplifier and mixer allows operation of the circuit over a substantial voltage range. Arrangement of the mixer in an emitter follower configuration results in reduced levels of undesired frequencies. The gain of the input and output amplifiers may be varied allowing usage in different products.