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Spiral-Coupled-Line-Based Wilkinson Power Divider.
- Source :
- IEEE Microwave & Wireless Components Letters; Mar2021, Vol. 31 Issue 3, p241-244, 4p
- Publication Year :
- 2021
-
Abstract
- A spiral-coupled-line-based Ka-band (26.5–40 GHz) CMOS Wilkinson power divider with a shunt capacitor (C) at the input and a shunt RC (or C) between the outputs is reported. The spiral coupled line, i.e., two noninverting spiral transmission lines (TLs) with magnetic coupling, has a positive mutual inductance. This leads to a significant TL-length reduction (from about λ/7 to λ/12) for a specific TL series inductance. At 33 GHz, the power divider achieves prominent S<subscript>11</subscript> of −21.5, S<subscript>22</subscript> of −22.1, S<subscript>33</subscript> of −22.1, S<subscript>32</subscript> of −26.1, S<subscript>21</subscript> of −4.063, and S<subscript>31</subscript> of −4.052 dB. The corresponding amplitude imbalance (AI) and phase difference (PD) are −0.011 dB and −0.336°, respectively. Moreover, S<subscript>11</subscript> is smaller than −10 dB for 0–45.3 GHz, corresponding to 137.3% fractional bandwidth (FBW). S<subscript>32</subscript> is smaller than −10 dB for 24.1–40.2 GHz, covering the Ka-band and corresponding to 48.8% FBW. The power divider occupies a normalized area of 1.2 ×10<superscript>−4</superscript>λ<subscript>0</subscript><superscript>2</superscript>, one of the smallest normalized chip areas ever reported for millimeter-wave power dividers. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15311309
- Volume :
- 31
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- IEEE Microwave & Wireless Components Letters
- Publication Type :
- Academic Journal
- Accession number :
- 149378832
- Full Text :
- https://doi.org/10.1109/LMWC.2021.3051857