Electronic switching device for an antenna switchable in the VHF and UHF frequency ranges

摘要

Switching device for adjusting the impedance of a self-inductor (3) forming part, for example, of the aeriel of a switchable VHF/UHF antenna of an aircraft by short-circuiting a part of this self-inductor. A PIN diode (12) is taken to a turned-off or conducting voltage in response to control signals which are sent to it by an optical link (8). Preferably, the optical signals are sent to a hybrid optical-electronic circuit, which, as required, connects the PIN diode with insulated conductors (11, 13) plated onto the self-inductor and taken to the desired voltage. … IMAGE …