A simple low cost coplanar twin slots active antenna oscillator for wireless applications
Research Group
Grupo Electromagnetismo Aplicado a las TelecomunicacionesKnowledge Area
Teoría de la Señal y las ComunicacionesSponsors
Universidad Politécnica Federal de LausannePublication date
1999-10Publisher
John Wiley & SonsBibliographic Citation
Álvarez Melcón, A., Campos, V., Zurcher, J.F., Mosig, J.R. A Simple Low Cost Coplanar Twin Slots Active Antenna Oscillator for Wireless Applications. En Microwave and Optical Technology Letters, Vol. 23, No. 1, October 1999, pp. 18-25. ISSN 0895-2477Peer review
SIKeywords
Active antennasOscillators
TRL calibration
Slot antennas
Abstract
This paper presents a compact, simple, low-cost coplanar waveguide active antenna oscillator which can be used for wireless communication applications. The circuit uses the active MGA86576 MMIC amplifier, which is biased through its output port using simple
lumped elements. A closed feedback loop is implemented with two slot
antennas fed by coplanar waveguide transmission lines. The paper presents a design procedure to systematically dimension the different parts
of the structure until the oscillation condition is satisfied. An active
antenna oscillator has been designed, manufactured, and tested, and
measured results are in good agreement with predictions. The circuit
exhibits a very clean, stable oscillation, and the radiation patterns are
smooth and quasi omnidirectional. The measured gain of the active
antenna is 3.2 dBi.
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