公开(公告)号：KR810001212B1

公开(公告)日：1981-09-28

申请号：KR770000057

申请日：1977-01-12

Applicant: MOTOROLA INC

Inventor： MEYERHOFF J ,  PRINISKI D

IPC: H04B1/48

Abstract: The antenna(12) of a transceiver couples through a low pass filter(14) to the input port(30) of a high pass filter network(32). The high pass network is designed to reflect a very high impedance to its input port when its output port(40) is at ground potential. The transmitter portion(62) of the transceiver couples to the input port of the network with the receiver coupling to the network output port. A semiconductor diode(48) couples from the output port(40) to ground potential. In the receiver mode the combination, low pass and high pass filters, couple received signals in the desired frequency band to the input of the receiver.

公开(公告)号：BR7701075A

公开(公告)日：1977-10-18

申请号：BR7701075

申请日：1977-02-18

Applicant: MOTOROLA INC

Inventor： PRINISKI D ,  MEYERHOFF J

IPC: H04B1/48 ,  H04B7/00

Abstract: The antenna of a transceiver couples through a low pass filter to the input port of a high pass filter network. The high pass network is designed to reflect a very high impedance to its input port when its output port is at ground potential. The transmitter portion of the transceiver couples to the input port of the network with the receiver coupling to the network output port. A semiconductor diode couples from the output port to ground potential.