Abstract-This work proposes the use of Non-Bianisotropic Split Ring Resonators (NB-SRRs) as building blocks for dual-band response filters. Design parameters will be evaluated in order to characterize coupling mechanisms for both the particle and filter structure. A ready-to-use dual-band filter for a multiconstellation Galileo/GPS global positioning receiver is manufactured in order to validate and test the proposed design. The device transmission response measurement agrees with both circuital and electromagnetic simulations, as well as with theoretical insertion losses, which are 2.4 dB and 3.5 dB at center passbands for L 5 and L 1 bands respectively.
In this article a rotary acquisition system for recovering images by means of Gabor's Holography is presented. The rotation of the array decouples the polarization between its elements and the transmit antennas; this is resolved either by using circular polarized antennas or by measuring both H and V polarizations. A 16 element X-Band Imaging rotary array demonstrator is presented. Single receivers consist on a quasiyagi antenna matched to a schottky diode detector. Firsts results of a recovered image are presented and shown to be in good agreement with simulation.
Frequency mixers and multipliers are the key for heterodyne active imaging systems. In millimeter wave band, developing cost efficient devices based on commercially available GaAs Schottky diodes requires a detailed approach, far from the simple lumped element models.
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