Radio frequency feedthrough to portable device

摘要

An aviation transponder system comprising a permanently-mounted antenna, a permanently-mounted receiver module comprising a receiver, a signal splitter, and an external connector, and a portable receiver module, wherein a signal received on the permanently-mounted antenna is passed to the signal splitter of the permanently-mounted receiver module, wherein the signal splitter splits the signal such that the signal is sent to both the receiver and to the external connector, and wherein the portable receiver module is connected to the external connector, whereby the permanently-mounted antenna is used by the receiver of the permanently-mounted receiver module and fed through the permanently-mounted receiver module and made available to the portable receiver module through the external connector.

主权项

1. A system comprising: a permanently-mounted antenna;
a permanently-mounted receiver module comprising: a receiver; a signal splitter; an external connector; and
a transmitter connected to the permanently-mounted antenna; a portable receiver module; wherein a signal received on the permanently-mounted antenna is passed to the signal splitter of the permanently-mounted receiver module; wherein the signal splitter splits the signal such that the signal is sent to both the receiver and to the external connector; and wherein the portable receiver module is connected to the external connector; whereby the permanently-mounted antenna is used by the receiver of the permanently-mounted receiver module and fed through the permanently-mounted receiver module and made available to the portable receiver module through the external connector; a circulator selectively connected to the transmitter, the receiver and the permanently-mounted antenna; said circulator having operating modes configured for: a) sending signals from the transmitter to the permanently-mounted antenna in a first mode of operation; and b) taking signals received on the external antenna and routing them to the receiver in a second mode of operation;
a plurality of PIN limiter diodes directly connected to the circulator and adapted for limiting current passing from said permanently-mounted antenna to said receiver in said second mode of operation;said permanently-mounted antenna, said permanently-mounted receiver module and the circulator comprising an aviation transponder system; and said transponder system being configured for adding an external portable device that can receive input information from an existing antenna and send output information to a display unit.