公开(公告)号：IE61854B1

公开(公告)日：1994-11-30

申请号：IE102990

申请日：1990-03-21

Applicant: MOTOROLA INC

Inventor： JOHNSON ROBERT M ,  METROKA MICHAEL P

IPC: H02J7/04 ,  H01M6/50 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00 ,  H02J7/10 ,  H04W52/02 ,  H04B17/00

Abstract: A battery type detector for battery-charging equipment is disclosed. Operational characteristics of the charging equipment are modified in accordance with the battery type detected.

公开(公告)号：MX167065B

公开(公告)日：1993-03-01

申请号：MX2070790

申请日：1990-05-15

Applicant: MOTOROLA INC

Inventor： JOHNSON ROBERT M ,  KIEM JOSHUA P

IPC: H02J7/02 ,  H02J7/00

公开(公告)号：AU625224B2

公开(公告)日：1992-07-02

申请号：AU5661790

申请日：1990-04-30

Applicant: MOTOROLA INC

Inventor： JOHNSON ROBERT M ,  KIEM JOSHUA P

IPC: H02J7/02 ,  H02J7/00

公开(公告)号：HUT53988A

公开(公告)日：1990-12-28

申请号：HU572189

申请日：1989-09-22

Applicant: MOTOROLA INC

Inventor： JOHNSON ROBERT M

IPC: H01Q20060101 ,  H01Q1/22 ,  H01Q1/24 ,  H01Q1/36 ,  H01Q9/30 ,  H01Q21/28 ,  H04B1/18

Abstract: An antenna for a portable cellular telephone (100) includes a quarter-wavelength ground radiator (106) and a helical coil (104) capacitively coupled to an extendable half-wavelength radiator (102). The extendable half-wavelength radiator (102) includes a metallic coil (209) molded in plastic. The ground radiator (106) includes a serpentined transmission line (302) on a flexible circuit board (310). The helical coil (104) and ground radiator (106) are coupled by a transmission line (110) to a duplexer (112). The duplexer couples transmitter signals from a radio transmitter (114) to the antenna and receiver signals from the antenna to a radio receiver (116). The antenna may be advantageously utilized in any portable radio applications where small size and immunity to hand induced radiation losses are desired.

公开(公告)号：NO905500L

公开(公告)日：1990-12-20

申请号：NO905500

申请日：1990-12-20

Applicant: MOTOROLA INC

Inventor： JOHNSON ROBERT M ,  METROKA MICHAEL P

IPC: H01M6/50 ,  H02J7/04 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00 ,  H02J7/10 ,  H04W52/02 ,  H04B17/00

Abstract: A battery type detector for battery-charging equipment is disclosed. Operational characteristics of the charging equipment are modified in accordance with the battery type detected.

公开(公告)号：DK299790D0

公开(公告)日：1990-12-18

申请号：DK299790

申请日：1990-12-18

Applicant: MOTOROLA INC

Inventor： JOHNSON ROBERT M ,  METROKA MICHAEL P

IPC: H02J7/04 ,  H01M6/50 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00 ,  H02J7/10 ,  H04W52/02 ,  G01R31/36

Abstract: A battery type detector for battery-charging equipment is disclosed. Operational characteristics of the charging equipment are modified in accordance with the battery type detected.

公开(公告)号：NO902873L

公开(公告)日：1990-06-28

申请号：NO902873

申请日：1990-06-28

Applicant: MOTOROLA INC

Inventor： JOHNSON ROBERT M

IPC: H01Q20060101 ,  H01Q1/24

公开(公告)号：DK149590D0

公开(公告)日：1990-06-19

申请号：DK149590

申请日：1990-06-19

Applicant: MOTOROLA INC

Inventor： JOHNSON ROBERT M

IPC: H01Q20060101 ,  H01Q1/22 ,  H01Q1/24 ,  H01Q1/36 ,  H01Q9/30 ,  H01Q21/28 ,  H04B1/18 ,  H01Q1/10

Abstract: An antenna for a portable cellular telephone (100) includes a quarter-wavelength ground radiator (106) and a helical coil (104) capacitively coupled to an extendable half-wavelength radiator (102). The extendable half-wavelength radiator (102) includes a metallic coil (209) molded in plastic. The ground radiator (106) includes a serpentined transmission line (302) on a flexible circuit board (310). The helical coil (104) and ground radiator (106) are coupled by a transmission line (110) to a duplexer (112). The duplexer couples transmitter signals from a radio transmitter (114) to the antenna and receiver signals from the antenna to a radio receiver (116). The antenna may be advantageously utilized in any portable radio applications where small size and immunity to hand induced radiation losses are desired.

公开(公告)号：AU4339389A

公开(公告)日：1990-05-28

申请号：AU4339389

申请日：1989-09-22

Applicant: MOTOROLA INC

Inventor： JOHNSON ROBERT M

IPC: H01Q20060101 ,  H01Q1/22 ,  H01Q1/24 ,  H01Q1/36 ,  H01Q9/30 ,  H01Q21/28 ,  H04B1/18

Abstract: An antenna for a portable cellular telephone (100) includes a quarter-wavelength ground radiator (106) and a helical coil (104) capacitively coupled to an extendable half-wavelength radiator (102). The extendable half-wavelength radiator (102) includes a metallic coil (209) molded in plastic. The ground radiator (106) includes a serpentined transmission line (302) on a flexible circuit board (310). The helical coil (104) and ground radiator (106) are coupled by a transmission line (110) to a duplexer (112). The duplexer couples transmitter signals from a radio transmitter (114) to the antenna and receiver signals from the antenna to a radio receiver (116). The antenna may be advantageously utilized in any portable radio applications where small size and immunity to hand induced radiation losses are desired.