Patent ID: 6288679
Filing Date: 2001-09-11
Classification: H01Q

Abstract:
An antenna structure with a first port for transmission of electromagnetic signals and a second port for reception of electromagnetic signals, said antenna structure comprising:a first and second electrically conductive element essentially forming a resonator defining at least a first and second resonant axis;a first coupling assigned to said first port and arranged to excite said resonator in a direction parallel to said first resonant axis with frequencies of a first frequency band;a second coupling assigned to said second port and arranged to excite said resonator in a direction parallel to said second resonant axis with frequencies of a second frequency band, whereinsaid first resonant axis is adapted to transmit signals with frequencies of said first frequency band, and said second resonant axis is adapted to receive signals with frequencies of said second frequency band, and whereinsaid first and second frequency bands are different from one another, and whereinsaid antenna structure provides electromagnetic isolation between said first and second port.