This article presents the design of harmonic suppressed compact microstrip balun, using shunt open-stubs. Two approaches using P-shaped and T-shaped open-stub configurations are investigated. Because of the stopband effect of the open-stubs, the harmonic passband responses are suppressed effectively. A compact-size balun is realized because both kinds of structures have slow wave characteristics. To validate theoretical predictions, two prototype baluns operating at f 0 ¼ 1 GHz, showing size reduction up to 75% and no spurious passband up to 4f 0 compared with the conventional design are fabricated in microstrip form.
Hip implants are crucial for the rehabilitation of injured or dislocated hip joint. Generally, solid implants made of metal alloys are used for orthopaedic applications. Solid implants are good for bearing loads but these are high in weight and less compatible with the natural bones. Porous hip implants are gaining importance due to its low weight and more compatibility with bones. Design of porous cells plays significant role in deciding and managing the strength, weight and biocompatibility issues. These porous issues are deal with designing lattice- based patient specific implants and suitable for manufacturing using additive manufacturing technology. Present research work has been focused on design and analysis of strut-based diamond lattice-based hip implant using nToplogy software. Various biocompatible materials have considered for design and analysis.
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