CPC H01P 1/2138 (2013.01) [H01P 5/12 (2013.01); H04L 5/14 (2013.01)] | 14 Claims |
8. An electronic apparatus for unsynchronized Time Division Duplex (TDD) multi-band operation in a wireless communication system, the electronic apparatus comprising:
a first resonator arrangement comprising one or more resonators tuned for operating at a first frequency band, wherein a first terminal of the first resonator arrangement is coupled to an antenna element; and
a second resonator arrangement comprising one or more resonators tuned for operating at a second frequency band, wherein a first terminal of the second resonator arrangement is coupled to the antenna element; and
a tunable resonator arrangement comprising a first tunable resonator, a second tunable resonator, a third tunable resonator, a fourth tunable resonator, wherein:
first terminals of the first and second tunable resonators are coupled to a second terminal of the first resonator arrangement;
first terminals of the third and fourth tunable resonators are coupled to a second terminal of the second resonator arrangement;
second terminals of the second and third tunable resonators are coupled to a receiving frontend;
second terminals of the first and fourth tunable resonators are coupled to a transmitting frontend; and
the first, second, third and fourth tunable resonators in the tunable resonator arrangement are tuned according to different operating modes.
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