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 J Electromagn Eng Sci > Volume 16(4); 2016 > Article
 Journal of Electromagnetic Engineering and Science 2016;16(4):241-247. DOI: https://doi.org/10.5515/JKIEES.2016.16.4.241
 Novel New Approach to Improve Noise Figure Using Combiner for Phase-Matched Receiver Module with Wideband Frequency of 6-18 GHz Yuseok Jeon, Sungil Bang Division of Electronic and Electric Engineering, Dankook University Correspondence:  Sungil Bang,Email: halsuida@naver.com Abstract This paper proposes the design and measurement of a 6-18 GHz front-end receiver module that has been combined into a one- channel output from a two-channel input for electronic warfare support measures (ESM) applications. This module includes a limiter, high-pass filter (HPF), power combiner, equalizer and amplifier. This paper focuses on the design aspects of reducing the noise figure (NF) and matching the phase and amplitude. The NF, linear equalizer, power divider, and HPF were considered in the design. A broadband receiver based on a combined configuration used to obtain low NF. We verify that our receiver module improves the noise figure by as much as 0.78 dB over measured data with a maximum of 5.54 dB over a 6-18 GHz bandwidth; the difference value of phase matching is within $7^{circ}$ between ports. Key words: Amplitude Matching, Broadband Receiver, Front-End, EW System, Phase Matching
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