A 26 GHz retro-reflective array for long-range RFID applications
A unique design of series-fed grounded coplanar waveguide (GCPW) patch arrays for use in retro-reflective arrays is presented. For the current application, a planar retro-reflector which is capable of providing large radar cross-section (RCS) and signal modulation, and can also operate on metallic surfaces from 25.5–26.5GHz is desired. Linear, series-fed GCPW patch arrays are employed as the radiating elements. Using constituent arrays allows maximization of RCS using the minimum number of active components. Additionally, the unique orientation of the series-fed arrays provides beam squinting, allowing for ease of target identification and distinguishing the response from that of the array ground plane. The array design and results are briefly presented herein. Integration of the array in the intended system application is discussed in a separate conference submission.
Microstrip series arrays
A traveling-wave design technique for microstrip series arrays is discussed. The technique is applicable to both resonant and nonresonant array configurations. Experimental results for both configurations are presented.
Targets for microwave radar navigation
The effective echoing areas of certain radar targets can be calculated by the methods of geometrical optics. Other more complicated structures have been investigated experimentally. This paper considers a number of targets of practical interest with particular emphasis on trihedral and biconical comer reflectors. The possibility is indicated of using especially designed targets of high efficiency as aids to radar navigation.