Browse > Article
http://dx.doi.org/10.12673/jant.2017.21.6.626

High Power Amplifier using Radial Power Combiner  

Choi, Jong-Un (Department of Electronic Engineering, Catholic Kwandong University)
Yoon, Young-Chul (Department of Electronic Engineering, Catholic Kwandong University)
Kim, Young (School of Electronic Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of Advanced Navigation Technology / v.21, no.6, 2017 , pp. 626-632 More about this Journal
Abstract
This paper describes a high power amplifier combining eight low power amplifiers using a radial power combiner with low insertion loss. The radial power combiner is a non-resonant type combiner with 8 input ports and is implemented by microstrip transmission line. The combiner characteristics designed at operating frequency of 1.045 GHz have an insertion loss of 0.7 dB and a return loss of more than 12 dB. Also, the low power amplifier used was designed with AFT27S010NT1 transistor and designed to satisfy the same gain, phase and constant output characteristic at operating frequency. The high power amplifier, which combiners the radial power combiner and the drive amplifier of 8 W output by driving low power amplifiers obtained the output characteristic of 33 W at operating frequency of 1.045 GHz. Also, the change of the output characteristic of the amplifier using the radial combiner was graceful degradation when the low power amplifier failed one by one.
Keywords
Combining technology; Graceful degradation; Power amplifier; Radial combiner;
Citations & Related Records
연도 인용수 순위
  • Reference
1 K. J. Russel, "Microwave power combining techniques," IEEE Transaction of Microwave Theory and Techniques, Vol. MTT-27, No. 5, pp. 472-478, May1979.
2 E. Wilkinson, "An N-way hybrid power divider," IRE Transaction of Microwave Theory and Techniques, Vol. MTT-8, pp. 116-118, Jan.1960.
3 U. H. Gysel, "A new N-way power divider/combiner suitable for high power applications," in Proc. 1975 IEEE MTT-S International Microwave Symposium, Palo Alton, CA, pp.116-118, May1975.
4 N. Nagai, "New N-way hybrid power dividers," in Proc. 1977 IEEE MTT-S International Microwave Symposium, San Diego, CA, pp. 503-505, Jun.1977.
5 Z. Galani and S. J. Temple, "A broadband planar N-way combiner/divider," in Proc. 1977 IEEE MTT-S International Microwave Symposium, San Diego, CA, pp. 499-502, Jun.1977.
6 A. E. Fathy, S.W. Lee, and D. Kalokitis, "A simplifed design approach for radial power combiners," IEEE Transaction of Microwave Theory and Techniques, Vol. 54, No. 1, pp. 247-255, Jan.2006.   DOI
7 J. M. Schellenberg and M. Cohn, "A wideband radial power combiner for FET amplifiers," in IEEE International Solid State Circuits Conference, San Francisco, CA, pp.164-166, Feb.1978.
8 Dirk I. L. de Villers, Pieter W, "Design of conical transmission line power combiners using tapered line matching sections," IEEE Transaction of Microwave Theory and Techniques, Vol. 56, No. 6, pp. 1478-1484, Jun. 2008.   DOI
9 M. D. Abouzahra and K. C. Gupta, "Multiple-port power divider/combiner circuits using circular microstrip disk configurations," IEEE Transaction of Microwave Theory and Techniques, Vol. MTT-35, No. 1, pp. 1296-1302, Dec.1987.
10 Sushim Mukul Roy, Isaac Balbin, " Novel N-way power divider and array configuration for RFID reader operating 5.8 GHz," in 2008 IEEE International Conference on RFID, The Venetian, Las Vegas, Nevada, pp.89-96, Apr.2008.
11 E. Belohoubek, R. Brown, H. Johnson, A. Fathy, D. Bechtle, D. Kalokitis, and E. Mykietyn, "30-way radial power combiner for miniature GaAs FET power amplifiers," in IEEE MTT-S International Microwave Symposium, Baltimore, MD, pp.515-518, Jun.1986.
12 A. Fathy and D. Kalokitis, " Analysis and design of a 30 way radial combiner for Ku-band applications," RCA Rev. Vo1. 47, pp. 487-508, Dec.1986.
13 H. Kagan, " N-way power divider," IRE Transaction of Microwave Theory and Techniques, Vol. MTT-9, Vo1. 2, pp. 198-199, Mar.1961.