## Abstract

A two-stage 180-nm CMOS wideband (14–22 GHz) power amplifier (PA) with a superimposed staggered technique and defected-ground-structure (DGS) inductors is introduced, where a wideband peaking main stage is designed at the center frequency; then, a superimposed dual-band (SDB) driver stage is proposed to obtain the optimally flat gain response over the whole bandwidth (BW). Also, DGS inductors are used to enhance the power added efficiency (PAE) of the implemented PA by decreasing the matching circuits’ insertion losses. The proposed PA achieved a power gain of 12 dB at a total chip area of 0.564 mm<inline-formula> <tex-math notation="LaTeX">$^{2}$</tex-math> </inline-formula>. Also, at the center frequency, it achieved a saturated output power of 16.6 dBm exhibiting the smallest reported amplitude-to-phase (AM-PM) distortion (2.1<inline-formula> <tex-math notation="LaTeX">$^{\circ})$</tex-math> </inline-formula> and group delay (GD) variations (<inline-formula> <tex-math notation="LaTeX">$\pm$</tex-math> </inline-formula>66 ps). Finally, it gives among the highest fractional bandwidth (FBW) (44.4%) and the PAE (18.7%) so far. Also, it achieves an error vector magnitude of <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>25 dB at 9.3-dBm output power for a 400-MHz 5G-NR signal.

Original language | English |
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Pages (from-to) | 1-4 |

Number of pages | 4 |

Journal | IEEE Microwave and Wireless Components Letters |

DOIs | |

Publication status | Accepted/In press - 2022 |

## All Science Journal Classification (ASJC) codes

- Condensed Matter Physics
- Electrical and Electronic Engineering