公开(公告)号：KR880000164B1

公开(公告)日：1988-03-12

申请号：KR820000322

申请日：1982-01-26

Applicant: RCA CORP

Inventor： CARLSON DAVID J ,  TSOU SANDER H C

IPC: H01Q1/52 ,  H01Q19/06 ,  H03H7/46 ,  H04B1/18

Abstract: A single antenna receives R.F. carriers in two different bands. A first wire includes a first conductor connected between the antenna and a signal input of a first tuner for the first band. The first conductor supplies both bands. A second wire includes a second conductor having one end coupled to a signal input of a second tuner for the second band. The second conductor is wrapped around the first conductor in a predetermined number of discrete turns without DC connection to the first conductor or to the antenna to exhibit a frequency selective characteristic between the conductors.

公开(公告)号：US2714192A

公开(公告)日：1955-07-26

申请号：US23475251

申请日：1951-07-02

Applicant: RCA CORP

Inventor： YUAN PAN WEN ,  CARLSON DAVID J

IPC: H03H7/01

CPC classification number: H03H7/0161

公开(公告)号：US3268827A

公开(公告)日：1966-08-23

申请号：US26952563

申请日：1963-04-01

Applicant: RCA CORP

Inventor： CARLSON DAVID J ,  THERIAULT GERALD E

IPC: D06B23/10 ,  H01L27/088 ,  H01L29/00 ,  H03B5/24 ,  H03D7/12 ,  H03F1/26 ,  H03F3/191 ,  H03F3/193 ,  H03G1/00 ,  H03G3/30

CPC classification number: H03G3/3052 ,  D06B23/10 ,  H01L27/088 ,  H01L29/00 ,  H03B5/24 ,  H03D7/125 ,  H03F1/26 ,  H03F3/191 ,  H03F3/193 ,  H03G1/0017 ,  H03G1/0029

公开(公告)号：US3252095A

公开(公告)日：1966-05-17

申请号：US24212162

申请日：1962-12-04

Applicant: RCA CORP

Inventor： CARLSON DAVID J

IPC: H03D9/06 ,  H03J5/24

CPC classification number: H03J5/242 ,  H03D9/0666

公开(公告)号：US3242433A

公开(公告)日：1966-03-22

申请号：US21664262

申请日：1962-08-13

Applicant: RCA CORP

Inventor： CARLSON DAVID J ,  SCHULTZ JOHN B

IPC: H03D7/00 ,  H03J5/24

CPC classification number: H03D7/00 ,  H03J5/242

公开(公告)号：US2834948A

公开(公告)日：1958-05-13

申请号：US46603354

申请日：1954-11-01

Applicant: RCA CORP

Inventor： YUAN PAN WEN ,  CARLSON DAVID J

IPC: H01P7/02

CPC classification number: H01P7/02

公开(公告)号：US2803745A

公开(公告)日：1957-08-20

申请号：US36550453

申请日：1953-07-01

Applicant: RCA CORP

Inventor： YUAN PAN WEN ,  CARLSON DAVID J

IPC: G01N21/89 ,  H03J3/28

CPC classification number: G01N21/8901 ,  H03J3/28

公开(公告)号：US3252096A

公开(公告)日：1966-05-17

申请号：US24228162

申请日：1962-12-04

Applicant: RCA CORP

Inventor： CARLSON DAVID J

IPC: H03D9/06

CPC classification number: H03D9/0666

公开(公告)号：US3229120A

公开(公告)日：1966-01-11

申请号：US30409163

申请日：1963-08-23

Applicant: RCA CORP

Inventor： CARLSON DAVID J

IPC: H03D7/12 ,  H03F3/04 ,  H03F3/193 ,  H03J3/00 ,  H03J3/18

CPC classification number: H03F3/193 ,  H03D7/125 ,  H03F3/04 ,  H03J3/00 ,  H03J3/185

公开(公告)号：US2817064A

公开(公告)日：1957-12-17

申请号：US59798356

申请日：1956-07-16

Applicant: RCA CORP

Inventor： CARLSON DAVID J

IPC: H03H2/00

CPC classification number: H03H2/008