An embodiment antenna system includes a first antenna portion configured to transmit a first signal received from a first feed and a second antenna portion configured to transmit a second signal received from a second feed. The second antenna portion is capacitively coupled to the second feed and inductively coupled to the first antenna portion, and the second signal has a frequency greater than a frequency of the first signal.

Combination sub-6 ghz and mmwave antenna system

The present invention discloses a multi-band antenna. The multi-band antenna is provided with: a plurality of antenna radiating elements comprising a VHF band antenna, an S band antenna, and an L band antenna, which are used to radiate radio electromagnetic energy to space and receive radio electromagnetic energy; an L band feeding unit, used to feed the L band antenna; an S band feeding unit, used to feed the S band antenna; an S band diplexer unit, used to achieve high isolation between receiving and sending by the S band antenna, wherein the VHF antenna element is electrically connected to the S band feeding unit; and a VHF antenna multi-frequency matching unit, used for multi-frequency matching of the VHF band antenna. The multi-band antenna disclosed by the present invention has the following advantages that the antennas are combined and arranged in vertical space according to radiation characteristics of the antennas, so that electromagnetic radiation of the antenna of each band is in a required spatial direction, signals of each frequency can be effectively transmitted and received, and a feed circuit of each band can perform effective feeding for each band, providing line-of-sight, middle-distance, and long-distance alerts, reports, and voice communication.

Zhang Cunliang

Papers

Multi-band antenna and combination and multiplexing method for implementing antenna