MULTI-MODE FEED NETWORK FOR ANTENNA ARRAY

摘要

A dual-mode feed network for an antenna array or combination antenna is provided. Two transmission line structures propagate signals according to two different electromagnetic propagation modes, such as TE, TM, TEM and quasi TEM modes. The two transmission line structures are operatively coupled to different components of the antenna array. One transmission line structure may be a stripline or microstrip, and the other transmission line structure may be a waveguide such as a Substrate Integrated Waveguide. Both transmission line structures may branch to reach multiple elements of the antenna array. The transmission lines may share common features, for example by embedding the stripline within the waveguide.

主权项

1. A feed network for an antenna array, comprising:
a first transmission line structure configured for propagating signals according to a first electromagnetic propagation mode corresponding to a Transverse Electromagnetic (TEM) or a quasi-TEM mode, the first transmission line structure operatively coupled to a first set of antenna elements of the antenna array; and a second transmission line structure for propagating signals according to a second electromagnetic propagation mode, the second electromagnetic propagation mode corresponding to one of a Transverse Electric (TE) and a Transverse Magnetic (TM) mode, the second transmission line structure operatively coupled to a second set of antenna elements of the antenna array, the second set of antenna elements different from the first set of antenna elements.