Ultra-broadband diplexer using waveguide and planar transmission lines

摘要

A hybrid diplexer combining planar transmission line(s) and a waveguide is disclosed. In one embodiment, a diplexer includes first, second, and third ports. The diplexer also includes a first signal path and a second signal path. The first signal path may be used to convey lower frequencies, and may be implemented using planar transmission lines. The second signal path may be used to convey higher frequencies, and may be implemented, at least in part, using a waveguide. The first signal path may be coupled between the first port and the second port, while the second signal path may be coupled between the first port and the third port. In one embodiment, the first signal path may implement a low-pass filter, while the second signal path may implement a high-pass filter.

主权项

1. A diplexer comprising:
an input configured to receive a broadband signal, wherein the input is configured to couple to a first coaxial transmission line; a first output, configured to couple to a second coaxial transmission line; a low-pass filter configured to receive the broadband signal and further configured to provide a first output signal to the first output, wherein the first output is configured to convey the first output signal, and wherein the low-pass filter is implemented using a planar transmission line; a second output, configured to couple to a third coaxial transmission line; a high-pass filter configured to receive the broadband signal and to provide a second output signal to the second output, wherein the second output is configured to convey the second output signal, wherein the high-pass filter is implemented using a waveguide.