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A Spanish research group offers new possibilities in the development of multifrequency antennas with different radiation patterns to be used simultaneously for several applications (i.e. different mobile services and GPS or Galileo). The group is looking for technical cooperation.
Multi-frequency microstrip patch antennas partially
filled with metamaterials or Left-Handed (LH) structures are presented. In addition, the presence of
LH structures also allows having miniaturized antennas. Thus, multifrequency, dual mode and
miniaturized antennas based on single patches partially filled with LH structures have been
obtained. An implementation based on microstrip patches partially filled with mushroom like
structures is proposed. This approach is used in the design, manufacture and measurement of two
multi-frequency patch antennas. The first one shows two dipolar (patch like) modes at 1.06 GHz and
2.16 GHz and a monopolar mode (null at broadside) at 1.45 GHz. The ratio between the resonant
frequencies of both dipolar modes can be arbitrarily chosen (by means of a proper design of the
patch and the LH structures) and, in this case, is 2.04. The second antenna is designed to work at
closer frequencies. In this case the frequency ratio is dramatically reduced to produce a dual
dipolar antenna working at 1.81 GHz and 2.20 GHz (giving a ratio of 1.21).
Innovative Aspects:
•
Multifrequency and multifunction antennas based on single printed technology (with one layer) for
simultaneous mobile and/or GPS applications.
• Antenna miniaturization.
• Self-diplexed antennas
(with the same technology) with high isolation between different frequencies (RFID application)
Points to be developed:
• Although it may be enough for the proposed applications, increase the
antenna bandwidth.
• Depending on the miniaturization degree, increase the antenna efficiency.
Stage of Development
Development phase - Laboratory tested
Exploitation of RTD Results
National Programmes
IPR
Others
• Some research results have been published in the most important European and
American conferences in Antennas and Propagation. They are also accepted for being published in the
IEEE Transactions on Antennas and Propagation.
• An industrial agreement with an Spanish enterprise
is being signed for the development of an array of these antennas at higher frequencies, although an
initial prototype will be made at mobile frequencies.
Company Details
Collaboration Type
- Joint further development
- Type of partner sought: Antennas and microwave circuits enterprises for mobile services.
- Specific area of activity of the partner: Design and manufacture of antennas
- Task to be performed by the partner sought:technical cooperation and implementation of the new procedures in the production chain
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