公开(公告)号：US3500215A

公开(公告)日：1970-03-10

申请号：US3500215D

申请日：1966-11-15

Applicant: PHILIPS CORP

Inventor： LEUTHOLD PETER ,  GERWEN PETRUS JOSEPHUS VAN

IPC: H03K5/00 ,  H04B14/02 ,  H04L25/03 ,  H03K1/00

CPC classification number: H04B14/02 ,  H03K5/00 ,  H04L25/03133

公开(公告)号：US3588702A

公开(公告)日：1971-06-28

申请号：US3588702D

申请日：1968-12-23

Applicant: PHILIPS CORP

Inventor： TISI FELIX D ,  LEUTHOLD PETER

IPC: H03M5/16 ,  H04L25/49 ,  H04L27/02 ,  H03K7/00 ,  H04L27/04

CPC classification number: H04L27/02

Abstract: BINARY INFORMATION IS TRANSMITTED AS A SINGLE SIDEBAND SIGNAL TO A RECEIVING STATION. THE BINARY SIGNAL IS FIRST CONVERTED TO A THREE LEVEL SIGNAL. PHASE QUADRATIVE VERSIONS OF THIS THREE LEVEL SIGNAL ARE PRODUCED BY USING TWO MODULATORS SUPPLIED WITH 90* RELATIVE PHASE SHIFTED VERSIONS OF A CARRIER EQUAL TO ONE QUARTER OF THE BINARY PULSE FREQUENCY. THE PHASE SHIFTED VERSIONS OF THE THREE LEVEL SIGNAL ARE THEN EACH MODULATED ON PHASE QUADRATURE VERSIONS OF THE TRANSMISSION FREQUENCY CARRIER AND COMBINED FOR TRANSMISSION AS A SINGLE SIDEBAND SIGNAL. THE TWO CARRIERS ARE TRANSMITTED AS A PILOT.

公开(公告)号：US3521170A

公开(公告)日：1970-07-21

申请号：US3521170D

申请日：1967-02-28

Applicant: PHILIPS CORP

Inventor： LEUTHOLD PETER ,  GERWEN PETRUS JOSEPHUS VAN

IPC: H03H17/06 ,  H04L25/03 ,  H03K7/00

CPC classification number: H04L25/03133 ,  H03H17/0614

公开(公告)号：US3665314A

公开(公告)日：1972-05-23

申请号：US3665314D

申请日：1970-08-21

Applicant: PHILIPS CORP

Inventor： LEUTHOLD PETER

IPC: H04L27/04 ,  H04B1/04

CPC classification number: H04L27/04

Abstract: In a transmission system a shift register controlled modulator matrix is employed to filter unwanted modulation products from the frequency band.

公开(公告)号：US3599122A

公开(公告)日：1971-08-10

申请号：US3599122D

申请日：1969-10-06

Applicant: PHILIPS CORP

Inventor： LEUTHOLD PETER

IPC: H03H7/34

CPC classification number: H03H7/34

Abstract: A delay line for use in a filter has a strip or coil conductor continuously coupled to the conductor. The conductor has a longitudinally varying impedance such as resistance, capacitance, or inductance. This is achieved by varying the thickness, width, or pitch of the conductor, so that many transfer functions can be synthesized.