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Absfmc&This paper presents the characterization of ultra wideband antenna with human body. An experiment of the antenna transfer function needs the three-antenna method for calibrating the reference antenna. The results are used to evaluate the transmission gain based on the extended Friis' transmission formula. T h e matched .Iter is considered at the receiver side to maximize the SNR for evaluation. This technique gives very accurate results and is very useful for the design and evaluation of U W B impulse radio transmission systems, especially for the evaluation of waveform distortion effects.

This paper describes the design and practical implementation of an S-band (2.4 GHz) elliptic bandpass filter using lumped elements. Issues regarding the choice of materials, construction and characterization of capacitors and inductors, circuit implementation and filter tuning are discussed.

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