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11.发明授权
公开(公告)号：US3387270A
公开(公告)日：1968-06-04
申请号：US42574965
申请日：1965-01-15
Applicant: MOTOROLA INC
Inventor： ADLHOCH RICHARD H , CHAPMAN RONALD H
IPC: H04W88/02
CPC classification number: H04W88/028
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12.发明授权Electronic control circuit including counter for selectively actuating one of a plurality of units 失效电子控制电路包括用于选择性地驱动多个单元之一的计数器
公开(公告)号：US3345569A
公开(公告)日：1967-10-03
申请号：US33593164
申请日：1964-01-06
Applicant: MOTOROLA INC
Inventor： BURNHAM CASTERLINE , CHAPMAN RONALD H , ESCHBAUGH ROBERT V
CPC classification number: H03K5/15093 , H03F3/68 , H03K23/002
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公开(公告)号：DK163623B
公开(公告)日：1992-03-16
申请号：DK14684
申请日：1984-01-13
Applicant: MOTOROLA INC
Inventor： CHAPMAN RONALD H
IPC: H03C3/09 , H03K20060101 , H03K7/06 , H04L27/12
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公开(公告)号：ZA832834B
公开(公告)日：1984-03-28
申请号：ZA832834
申请日：1983-04-21
Applicant: MOTOROLA INC
Inventor： CHAPMAN RONALD H
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公开(公告)号：CA991292A
公开(公告)日：1976-06-15
申请号：CA235648
申请日：1975-09-17
Applicant: MOTOROLA INC
Inventor： BROCKER JOHN R , CHAPMAN RONALD H , JACOBS PAUL H , JOHNSON RONALD C , POWELL JERRY R , PEAY ROBERT L
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Patent Agency Ranking
公开(公告)号：CA799632A
公开(公告)日：1968-11-19
申请号：CA799632D
Applicant: MOTOROLA INC
Inventor： CHAPMAN RONALD H
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公开(公告)号：NO167620C
公开(公告)日：1991-11-20
申请号：NO840018
申请日：1984-01-04
Applicant: MOTOROLA INC
Inventor： CHAPMAN RONALD H
IPC: H03K20060101 , H03K7/06
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公开(公告)号：DE3380333D1
公开(公告)日：1989-09-07
申请号：DE3380333
申请日：1983-04-21
Applicant: MOTOROLA INC
Inventor： CHAPMAN RONALD H
IPC: H03C3/09 , H03K20060101 , H03K7/06 , H04L27/12
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公开(公告)号：CA1202681A
公开(公告)日：1986-04-01
申请号：CA442839
申请日：1983-12-08
Applicant: MOTOROLA INC
Inventor： BATLIVALA PERCY P , CHAPMAN RONALD H , KOMMRUSCH RICHARD S
Abstract: An apparatus for minimizing the spillover signal from the transmitter to the receiver in a same frequency repeater includes a mechanism for generating a receiver first injection signal carrying the modulation component of the transmitter signal, and a first mixer for mixing the received signals and the first injection signal to produce a first IF signal having one unmodulated IF component signal and another modulated IF component signal. A correlation and cancellation circuit is utilized to cancel the unmodulated IF component signal. A mechanism is provided for generating a second injection signal which carries the modulation component of the transmitter signal. A second mixer mixes the first IF signal and the second injection signal to produce a second IF signal such that the modulation component of the spillover signal is substantially cancelled. Time synchronization mechanisms are preferably provided to adjust the phase of the modulation component of the transmitted signal as carried by the first and second injection signals such that it arrives at the first and second mixers in phase synchronization with the modulation component of the spillover signal. This invention also contemplates a method for canceling the modulation component of the spillover signal.
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公开(公告)号：NO840018A
公开(公告)日：1984-01-04
申请号：NO840018
申请日：1984-01-04
Applicant: MOTOROLA INC
Inventor： CHAPMAN RONALD H
IPC: H03K20060101 , H03K7/06 , H03K
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