Loading...

Design and Implementation of an Integrated Power Amplifier for MM-wave Imaging

Mostafavi, Masoud | 2018

655 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50679 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Fakharzadeh Jahromi, Mohammad
  7. Abstract:
  8. In this thesis, the design of a fully-integrated Millimeter-wave Broadband power amplifier in TSMC 0.18 µm CMOS technology is studied. The Darlington cell with cascode topology was adopted as the power cell to improve the maximum available gain of transistors in standard 0.18 µm CMOS technology to make it eligible of operating at Ka band. Furthermore, by proposing a new topology as an improved Darlington-cascode with intermediate inductor in the Darlington pair, the improvement in flat power gain at Ka band and more importantly, in available power gain of active element at high frequencies of the Ka band is achieved. The proposed power amplifier is a two stage structure with the driver stage designed in the cascode arrangement. In order to implement the power stage, improved Darlington-cascode topology is exploited. To flatten the power gain of the driver stage, an input series loss technique is used. In addition, to obtain appropriate efficiency, as well as adequate power gain and linear output power concurrently, both stages are biased in class AB. The dissipated power of the power stage and driver stage are 74.2 mW and 36 mW respectively, from the 3.2 V supply. The proposed two-stage power amplifier exhibits a flat gain of 15.3 ± 1.32 dB from 26.5 to 40 GHz, and -3 dB bandwidths from 25.3 to 45.3 GHz. The mean value of output -1 dB gain compression point (OP_(-1dB)) of the proposed power amplifier is 11.16 dBm and with telorance of ±0.96 dBm at the Ka band. Also, the maximum power-added efficiency (PAE) is obtained in the range of 11.35% to 16.57%, at the Ka frequency band
  9. Keywords:
  10. KA Band ; Wideband Amplifier ; Complementary Metal Oxide Semiconductor Technology (CMOS) ; Three Dimentional Millimeter Wave Imaging ; Millimeter Wave ; Fifth Generation of Mobile Networks ; Broadband Amplifier ; Linearization ; Improved Darlington-Cascade Topology

 Digital Object List

 Bookmark

No TOC