Abstract
In this work, a compact miniaturized microstrip balun is proposed by removing the isolation port of a Rat-Race Coupler (RRC). The proposed balun consists of six quarter-wavelength Transmission Line (TL), and the TL is designed using interdigital capacitor and high impedance TL in parallel configuration. The fractional bandwidth (FBW) of RRC and balun are 37.5% and 33%, respectively, at centre frequency 2.4 GHz for amplitude imbalance of ±1 dB and phase imbalance of ±8°. The size occupied by the proposed balun is 0.51 λg × 0.22 λg.
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Kumari, A., Moyra, T., Bhowmik, P. (2019). Compact Rat-Race Coupler-Based Microstrip Balun Without Any Isolation Port. In: Iyer, B., Nalbalwar, S., Pathak, N. (eds) Computing, Communication and Signal Processing . Advances in Intelligent Systems and Computing, vol 810. Springer, Singapore. https://doi.org/10.1007/978-981-13-1513-8_6
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DOI: https://doi.org/10.1007/978-981-13-1513-8_6
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