%0 Journal Article 
%A Álvarez Melcón , Alejandro
%A Campos, Victor
%A Zurcher, Jean Francois
%A Mosig, Juan Ramón
%T A simple low cost coplanar twin slots active antenna oscillator for wireless applications
%D 1999
%@ 0895-2477
%U http://hdl.handle.net/10317/3208
%X 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.
%K Teoría de la Señal y las Comunicaciones
%K Active antennas
%K Oscillators
%K TRL calibration
%K Slot antennas
%~ GOEDOC, SUB GOETTINGEN