公开(公告)号：US3581122A

公开(公告)日：1971-05-25

申请号：US3581122D

申请日：1967-10-26

Applicant: BELL TELEPHONE LABOR INC

Inventor： GAUNT WILMER B JR

IPC: H03H11/12 ,  H03H11/18 ,  H03H11/22 ,  H04B3/14

CPC classification number: H03H11/18 ,  H03H11/1213 ,  H03H11/126 ,  H03H11/22

Abstract: A transistor circuit having a constant amplitude vs frequency response is described. The required transfer function is obtained by connecting a negative resistance across a resonant network in the transistor circuit. This arrangement provides a pole-zero pattern in the complex plane representation which is symmetrical with respect to the imaginary axis whereby the absolute magnitude of the ratio of output signal to input signal is constant for all frequencies.

公开(公告)号：US3426158A

公开(公告)日：1969-02-04

申请号：US3426158D

申请日：1965-11-23

Applicant: BELL TELEPHONE LABOR INC

Inventor： BROWNE THOMAS E ,  GAUNT WILMER B JR ,  GOLDSCHMIDT KARL ,  VIGLIANTE FRANK S ,  WILLIFORD OSCAR H ,  YORK ROBERT K

IPC: H04Q11/04 ,  H04M3/00

CPC classification number: H04Q11/0407

公开(公告)号：US3517223A

公开(公告)日：1970-06-23

申请号：US3517223D

申请日：1967-11-17

Applicant: BELL TELEPHONE LABOR INC

Inventor： GAUNT WILMER B JR

IPC: H03H11/12 ,  H03H11/18 ,  H03H11/22 ,  H03B3/04

CPC classification number: H03H11/18 ,  H03H11/1213 ,  H03H11/126 ,  H03H11/22

公开(公告)号：US3480883A

公开(公告)日：1969-11-25

申请号：US3480883D

申请日：1967-08-15

Applicant: BELL TELEPHONE LABOR INC

Inventor： GAUNT WILMER B JR

IPC: H03C3/09 ,  H04J1/20 ,  H03C3/02

CPC classification number: H04J1/20 ,  H03C3/09

公开(公告)号：US3502823A

公开(公告)日：1970-03-24

申请号：US3502823D

申请日：1967-10-26

Applicant: BELL TELEPHONE LABOR INC

Inventor： GAUNT WILMER B JR

IPC: H04B1/58 ,  H03F3/64 ,  H04B3/38 ,  H04B3/20

CPC classification number: H03F3/64

公开(公告)号：US3423538A

公开(公告)日：1969-01-21

申请号：US42131664

申请日：1964-12-28

Applicant: BELL TELEPHONE LABOR INC

Inventor： GAUNT WILMER B JR

IPC: H04M3/56

CPC classification number: H04M3/56

公开(公告)号：US3582784A

公开(公告)日：1971-06-01

申请号：US3582784D

申请日：1968-10-18

Applicant: BELL TELEPHONE LABOR INC

Inventor： GAUNT WILMER B JR

IPC: H03M3/02 ,  H04B1/66

CPC classification number: H03M3/022

Abstract: A delta modulation system is disclosed in which the input signal is compared with a reference level derived from the integrated output signal, the comparison resultant modulating a pulse train to produce the delta output signal in the conventional manner. The magnitude of the signal applied to the integrator is determined by the slope of the integrator output by applying the integral to a feedback loop including a differentiating circuit, the resultant derivative being gated to the integrator by the delta output signal.

公开(公告)号：US3540049A

公开(公告)日：1970-11-10

申请号：US3540049D

申请日：1967-10-26

Applicant: BELL TELEPHONE LABOR INC

Inventor： GAUNT WILMER B JR

IPC: H04B1/58 ,  H04B3/20

CPC classification number: H04B1/58

公开(公告)号：US3495041A

公开(公告)日：1970-02-10

申请号：US3495041D

申请日：1967-03-14

Applicant: BELL TELEPHONE LABOR INC

Inventor： GAUNT WILMER B JR ,  HARMS DAVID A

IPC: H04M3/56 ,  H04Q11/04 ,  H04J3/02

CPC classification number: H04Q11/04 ,  H04M3/561 ,  H04M3/568

公开(公告)号：US3586881A

公开(公告)日：1971-06-22

申请号：US3586881D

申请日：1967-12-29

Applicant: BELL TELEPHONE LABOR INC

Inventor： GAUNT WILMER B JR

IPC: H04B1/58 ,  H04B3/38

CPC classification number: H04B1/586

Abstract: A transistor hybrid circuit for exchanging signals between the incoming and outgoing paths of a four-wire line and a two-wire line is described. A signal from the incoming path is coupled via an amplifier and the base-emitter path of a coupling transistor to the two-wire line. An outgoing signal from the two-wire line is coupled via the emitter-collector path of the coupling transistor and a second amplifier to the outgoing path. A resistor network connected to the coupling transistor prevents the signal from the incoming path from being applied to the outgoing path.