A 100-element HBT grid amplifier

Moonil Kim, Emilio A. Sovero, Jonathan B. Hacker, Michael P. De Lisio, Jung Chih Chiao, Shi Jie Li, David R. Gagnon, James J. Rosenberg, David B. Rutledge

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

A l00-element 10-GHz grid amplifier has been developed. The active devices in the grid are chips with heterojunction-bipolar-transistor (HBT) differential-pairs. The metal grid pattern was empirically designed to provide effective coupling between the HBT’s and free space. Two independent measurements, one with focusing lenses, the other without, were used to characterize the grid. In each case, the peak gain was 10 dB at 10 GHz with a 3-dB bandwidth of 1 GHz. The input and output return loss were better than 15 dB at 10 GHz. The maximum output power was 450 mW, and the minimum noise figure was 7 dB. By varying the bias, a signal could be amplitude modulated with a modulation index as large as 0.65. Tests show that the grid was quite tolerant of failures—the output power dropped by only 1 dB when 10% of the inputs were detuned, The grid amplifier is a multi-mode device that amplifies beams of different shapes and angles. Beams with incidence angles up to 30° were amplified with less than a 3-dB drop in gain.

Original languageEnglish
Title of host publicationActive Antennas and Quasi-Optical Arrays
PublisherJohn Wiley and Sons Inc.
Pages137-147
Number of pages11
ISBN (Electronic)9780470544068
ISBN (Print)0780334868, 9780780334861
DOIs
Publication statusPublished - 2009 Jan 1
Externally publishedYes

Fingerprint

Heterojunction bipolar transistors
bipolar transistors
heterojunctions
amplifiers
grids
Noise figure
Lenses
Modulation
Bandwidth
output
Metals
incidence
chips
lenses
bandwidth
modulation
metals

Keywords

  • Gain
  • Gain measurement
  • Heterojunction bipolar transistors
  • Lenses
  • Oscillators
  • Power amplifiers
  • Strips

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Kim, M., Sovero, E. A., Hacker, J. B., De Lisio, M. P., Chiao, J. C., Li, S. J., ... Rutledge, D. B. (2009). A 100-element HBT grid amplifier. In Active Antennas and Quasi-Optical Arrays (pp. 137-147). John Wiley and Sons Inc.. https://doi.org/10.1109/9780470544068.ch4

A 100-element HBT grid amplifier. / Kim, Moonil; Sovero, Emilio A.; Hacker, Jonathan B.; De Lisio, Michael P.; Chiao, Jung Chih; Li, Shi Jie; Gagnon, David R.; Rosenberg, James J.; Rutledge, David B.

Active Antennas and Quasi-Optical Arrays. John Wiley and Sons Inc., 2009. p. 137-147.

Research output: Chapter in Book/Report/Conference proceedingChapter

Kim, M, Sovero, EA, Hacker, JB, De Lisio, MP, Chiao, JC, Li, SJ, Gagnon, DR, Rosenberg, JJ & Rutledge, DB 2009, A 100-element HBT grid amplifier. in Active Antennas and Quasi-Optical Arrays. John Wiley and Sons Inc., pp. 137-147. https://doi.org/10.1109/9780470544068.ch4
Kim M, Sovero EA, Hacker JB, De Lisio MP, Chiao JC, Li SJ et al. A 100-element HBT grid amplifier. In Active Antennas and Quasi-Optical Arrays. John Wiley and Sons Inc. 2009. p. 137-147 https://doi.org/10.1109/9780470544068.ch4
Kim, Moonil ; Sovero, Emilio A. ; Hacker, Jonathan B. ; De Lisio, Michael P. ; Chiao, Jung Chih ; Li, Shi Jie ; Gagnon, David R. ; Rosenberg, James J. ; Rutledge, David B. / A 100-element HBT grid amplifier. Active Antennas and Quasi-Optical Arrays. John Wiley and Sons Inc., 2009. pp. 137-147
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KW - Strips

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