Article | GigaHertz 2003. Proceedings from the Seventh Symposium | pHEMT and mHEMT Ultra Wideband Millimeterwave Balanced Resistive Mixers

Title:
pHEMT and mHEMT Ultra Wideband Millimeterwave Balanced Resistive Mixers
Author:
Sten Gunnarsson: Chalmers University of Technology, Department of Microelectronic, Sweden Klas Yhland: SP Swedish National Testing and Research Institute, Borås, Sweden Herbert Zirath: Chalmers University of Technology, Department of Microelectronic, Sweden \ Ericsson AB, MHSERC, Sweden
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Year:
2003
Conference:
GigaHertz 2003. Proceedings from the Seventh Symposium
Issue:
008
Article no.:
067
No. of pages:
4
Publication type:
Poster
Published:
2003-11-06
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


Two ultra wideband millimeterwave single balanced resistive mixers utilizing a Marchand balun for the LO.hybrid are simulated; fabricated and characterized for 30-60 GHz in both up and down conversion. Two different versions of the mixer were manufactured in a commercial pHEMT-MMIC and a mHEMT-MMIC process respectively. A measured down conversion loss of approximately 6 to 12 dB over the whole band is obtained for both versions of the mixer with external IF power combining. In spite of the balanced design; the required LO power is quite low; 2 dBm is sufficient for low conversion loss. The LO-RF isolation is excellent; often more than 30 dB for both type of mixers. Low noise figure and high IIP3 figures are obtained. It is also shown that by applying selective drain bias; up to 5 dB improvement of IIP3 can be obtained for the mHEMT mixer with small LO powers.

GigaHertz 2003. Proceedings from the Seventh Symposium

Author:
Sten Gunnarsson, Klas Yhland, Herbert Zirath
Title:
pHEMT and mHEMT Ultra Wideband Millimeterwave Balanced Resistive Mixers
References:

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[2] K.S. Ang; M. Chongcheawchamnan; I. D. Robertson;”Monolithic resistive mixers for 60 GHz direct conversion receivers”; Proc. 2000 IEEE Radio Frequency Integrated Circuits Symposium”; pp 35-38; 2000.


[3] H. Zirath; I. Angelov; C Karlsson; N. Rorsman;’An LO-rejecting balanced upconverter for communication systems’; Proceedings of 26th European Microwave conference 1996; pp.104-107.


[4] K. Yhland; N Rorsman; H Zirath;’Novel Single device balanced resistive HEMT-mixers’; IEEE Transactions on Microwave Theory and Techniques ; Vol 43; no 12; Dec 1995.


[5] H. Zirath ;’Analog MMICs for millimeterwaveapplications based on a commercial 0.14 µm PHEMTtechnology;’ Asia Pacific Microwave Conference 2000; Sydney; Australia.


[6] K. Yhland; N. Rorsman; M. Garcia and H. F. Merkel. ’A symmetrical nonlinear HFET/ MESFET model suitable for intermodulation analysis of amplifiers and resistive mixers’; 2000 Transactions on Microwave Theory and Techniques Vol. MTT-48; pp. 15- 22; 2000.


[7] Garcia J.A.; Pedro J.C.; De La Fuente M. L.; DeCarvalho N.B.; Sanchez A.M.; Puente A.T. ’Resistive FET mixer conversion loss and IMD optimization by selective drain bias’; Microwave Theory and Techniques; IEEE Transactions on ; Volume: 47 Issue: 12 ; Dec. 1999.

GigaHertz 2003. Proceedings from the Seventh Symposium

Author:
Sten Gunnarsson, Klas Yhland, Herbert Zirath
Title:
pHEMT and mHEMT Ultra Wideband Millimeterwave Balanced Resistive Mixers
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