| 摘要 |
An antenna with a combined bandpass/bandstop filter network is provided. The antenna includes: a first radiating arm connectable to an antenna feed, the first radiating arm configured to resonate at a first frequency; a second radiating arm, the second radiating arm and the first radiating arm, when electrically connected, configured to resonate at a second frequency lower than the first frequency; and, a filter network comprising a bandstop filter and a bandpass filter, the filter network filtering an electrical connection between the first radiating arm and the second radiating arm, the filter network configured to: electrically isolate the first radiating arm from the second radiating arm at the first frequency, and electrically connect the first radiating arm and the second radiating arm at the second frequency. |
| 主权项 |
1. An antenna comprising:
a first radiating arm connectable to an antenna feed, the first radiating arm configured to resonate at a first frequency the first radiating arm having a first end and a second end opposite the first end, the first radiating arm connectable to the antenna feed at the first end; a second radiating arm, the second radiating arm and the first radiating arm, together, configured to resonate at a second frequency lower than the first frequency, each of the first radiating arm and the second radiating arm comprising respective straight monopole antennas; a direct electrical connection between the second end of the first radiating arm and the second radiating arm; and, a filter network comprising a bandstop filter and a bandpass filter, connected in shunt from each of the first radiating arm and the second radiating arm to a ground, the shunt extending from the direct electrical connection between the first radiating arm and the second radiating arm, both of the bandstop filter and the bandpass filter located on the shunt and not on the direct electrical connection, the filter network filtering an electrical connection between the first radiating arm and the second radiating arm, the filter network configured to: electrically isolate, on the direct electrical connection, the first radiating arm from the second radiating arm at the first frequency, and electrically connect, on the direct electrical connection, the first radiating arm and the second radiating arm at the second frequency. |
