Application of GaAs Discrete p-HEMTs in Low Cost Phase Shifters and QPSK Modulators

ETRI Journal

关键词: Ku band;    cold FET measurements;    p-HEMT modeling;    QPSK modulator;    Phase shifter;   

Others  :  1185117
DOI  :  10.4218/etrij.04.0103.0143

【 摘 要 】

The application of a discrete pseudomorphic highelectron mobility transistor (p-HEMT) as a groundedswitch allows for the development of low cost phase shiftersand phase modulators operating in a Ku band. This fills thegap in the development of phase control devices comprisingp-i-n diodes and microwave monolithic integrated circuits(MMICs). This paper describes a discrete p-HEMTcharacterization and modeling in switching mode as well asthe development of a low-cost four-bit phase shifter anddirect quadrature phase shift keying (QPSK) modulator.The developed devices operate in a Ku band withparameters comparable to commercially available MMICcounterparts. Both of them are CMOS compatible andhave no power consumption. The parameters of the QPSKmodulator are very close to the requirements of availablestandards for satellite earth stations.

   

【 参考文献 】

• [1]C.O. Adler, D.J. Alen, R.S. Carson, A.F. Morrison, M.E. Lavelle, E.D. Anderson et al, "Airborne reception of data and direct broadcast TV using a phased array antenna," Proc. 2000 IEEE Int. Conf. on Phased Array Systems & Technology, California, 2000, pp.
• [2]S.A. Raby, R.Y. Shimoda, P.T. Heisen, D.E. Reimer, B.L. Blaser, G.R. Onorati, "Ku ? Band transmit phased array antenna for use in FSS communication system," Proc. 2000 IEEE Int. Conf. on Phased Array Systems & Technology, California, 2000, pp. 227?230.
• [3]L.O. Francis and W.F. Hoffman, "Design of digital loaded line phase-shift networks for microwave thin-film Applications," IEEE Transactions on Microwave Theory and Techniques, vol. MTT-16, no. 7, July 1968, pp. 462-468.
• [4]S.K. Koul and B. Bhat, Microwave and millimeter wave phase shifters, Volume II: Semiconductor and delay line phase shifters, 2nd ed., Artech House, 1991.
• [5]H.A. Atwater, "Impedance transformations for the generalized reflection modulator," IEEE Transactions on Microwave Theory and Techniques, vol. MTT-29, no. 3, Mar. 1981, pp. 229-234.
• [6]C. Andricos, I.J. Bahl, and E.L. Griffin, "C-band 6 - bit GaAs monolithic phase shifter," IEEE Transactions on Microwave Theory and Techniques, vol. MTT-33, no. 12, Dec. 1985, pp. 1591-1596.
• [7]J.E. Penn, "A broadband, four-bit, Ka-band MMIC phase shifter" Microwave J., vol. 44, no. 12, Dec. 2001, pp. 84-96.
• [8]A.E. Ashtiani, T. Gokdemir, G. passiopoulos, A.A. Rezazadeh, S. Nam, and I.D. Robertson, "Miniaturized low cost 30 Ghz monolithic balanced BPSK and vector modulators: part I," Microwave J., vol. 42, no. 3, Mar. 1999, pp. 100-104.
• [9]A.E. Ashtiani, T. Gokdemir, G. passiopoulos, A.A. Rezazadeh, S. Nam, and I.D. Robertson, "Miniaturized low cost 30 Ghz monolithic balanced BPSK and vector modulators: part II," Microwave J., vol. 42, no. 4, Apr. 1999, pp. 104-107.
• [10]S.D. Kamenopolsky, "Low cost 5-bit phase shifter for DBS phased array antennas," 33rd European Microwave Conf., Oct. 2003, pp. 801-804.
• [11]S.D. Kamenopolsky, "Digitally controlled phase shifter," Bulgarian application for patent 1 077 71, Apr. 30, 2003.
• [12]H.A. Atwater and R.W. Sudbury, "Use of switching Q in the design of FET microwave switches," MTT-S Int. Microwave Symp. Digest, June 1981, pp. 370 ? 372.
• [13]J. Wallace, H. Redd, and R. Furlow, "Low cost MMIC DBS chip sets for phased array applications," MTT-S Int. Microwave Symp. Digest, vol. II, June 1999, pp. 677 ? 680.
• [14]W.S. Djen, "Application note AN 1892, SA900 I/Q transmit modulator for 1 GHz application," Philips Semiconductor, Aug. 1997.
• [15]Intelsat, IESS-308 (Rev. 10), Intelsat, Earth Station Standard, 2001.