公开(公告)号：KR880000163B1

公开(公告)日：1988-03-12

申请号：KR820001725

申请日：1982-04-19

Applicant: MOTOROLA INC

Inventor： HOLLINGSWORTH ALLEN H ,  DEUTCHLE ALLEN G

IPC: H01P1/213 ,  H01P5/12

Abstract: The appts. combines at least three R.F. signals having different predetermined frequencies to provide a composite output signal. It includes a respective input transmission line, each having a predetermined characteristic impedance, for each signal, these lines being disposed in the same plane, and an output transmission line having a predetermined characteristic impedance. A terminating member is connected to each input line and to the output line for combining the signals, each input line being radially connected to the terminating member and the output line being disposed perpendicular to the plane of the input lines.

公开(公告)号：CA1171927A

公开(公告)日：1984-07-31

申请号：CA399433

申请日：1982-03-25

Applicant: MOTOROLA INC

Inventor： HOLLINGSWORTH ALLEN H ,  DEUTSCHLE ALAN G

IPC: H01P1/213 ,  H01P5/12

Abstract: A multiport radio frequency (RF) signal combiner is described for combining three or more RF signals for application to an antenna. The combiner includes an input port for each RF signal, an output port coupled to the antenna, and a tuning port coupled to a tuning transmission line. The input ports, output port and tuning port are connected to a terminating element. The tuning transmission line is terminated by a fixed or adjustable short-circuit impedance for substantially eliminating the capacitive discontinuity created by interconnecting the input ports. The RF signal combines can be advantageously utilized in any radio system where it is necessary to multiplex the RF signals from three or more transmitters to a single antenna.