公开(公告)号：AT125410T

公开(公告)日：1995-08-15

申请号：AT89309270

申请日：1989-09-12

Applicant: MOTOROLA INC

Inventor： SMITH JOHN M ,  LONG JAMES F ,  WANAT RONALD J ,  KOBRINETZ ANTHONY

IPC: H04B7/26 ,  H04W16/24 ,  H04W88/08 ,  H04Q7/22

Abstract: Cellular radiotelephone communication system cell site equipment has a radio frequency transmitter (240) operating as one signal frequency source and a first and a second signal combiner device (282) tuned to a first and a second signal frequency, respectively, each signal combiner device (282) having resonant cavity means for isolating a signal frequency source from other signal frequency sources. Each signal combiner device (282) has coupling means (210) for coupling the isolated signal frequency source to a respective common transmitter output. The system further comprises a radio frequency switching means (230), operatively coupled to the radio frequency transmitter (240), the first signal combiner device (282) and the second signal combiner device (282), for coupling the radio frequency transmitter (240) to either of the first and the second signal combiner devices (282).

公开(公告)号：MX170064B

公开(公告)日：1993-08-05

申请号：MX1706589

申请日：1989-08-03

Applicant: MOTOROLA INC

Inventor： KOBRINETZ ANTHONY ,  SMITH JOHN M ,  LONG JAMES F ,  WANAT RONALD J

IPC: C07K20060101 ,  H04B7/26 ,  H04H20/81 ,  H04M20060101 ,  H04W88/08 ,  H04H1/08

公开(公告)号：NO910914A

公开(公告)日：1991-03-08

申请号：NO910914

申请日：1991-03-08

Applicant: MOTOROLA INC

Inventor： SMITH JOHN M ,  LONG JAMES F ,  WANAT RONALD J ,  KOBRINETZ ANTHONY

IPC: H04B7/26 ,  H04W88/08 ,  H04Q7/04