Abstract
A new four-port balanced antenna feeding network for switchable polarizations and high transmit/receive (Tx/Rx) isolation characteristics is presented. The proposed structure is configured by two switching mode hybrid matrices which consist of two 3-dB couplers and two SP4T switches, two directional couplers, and Wilkinson dividers. By controlling impedances of the switching mode hybrid matrices, different types of polarizations such as right-handed circular polarization, left-handed circular polarization, vertical polarization, and horizontal polarization can be generated with stable Tx/Rx isolation characteristics regardless of antenna impedance variations.
Original language | English |
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Pages (from-to) | 17-23 |
Number of pages | 7 |
Journal | Microwave and Optical Technology Letters |
Volume | 56 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2014 |
Keywords
- Tx/Rx isolation
- antenna feeding network
- reconfigurable antenna
- reconfigurable feeding network