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An effective and simple planar dipole antenna has been proposed with a balun transition and the balanced array dipole element. This design methodology is not only simple to implement but also low profile and provides 1.84~2.44 GHz bandwidth with fairly good radiation patterns. Unbalanced currents are compensated for balun transition which provide the equal currents same direction. The dipole generates...
The paper presents a new type of turnstile antenna realized with two crossed dipoles parallelly connected. Feeding of the dipoles in phase quadrature to obtain omnidirectional radiation pattern is achieved by optimizing their impedances to be complex-conjugated. Dipoles are realized with aluminum strips. Balun - transition from the antenna to coaxial cable - is accomplished with concentrated parameters...
Two kind of balun transformers are composed of a balun transition and an impedance matching circuit. Both of them have good performance and compact size. Chemical etching compatible with the common microwave circuit manufacturing process is employed to make them. Using the odd-mode analysis and commercial microwave software to design the balun transformer, it is more accurate and more efficient than...
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