| 1. |
- Abbasi, Morteza, 1982, et al.
(författare)
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An E-Band(71-76, 81-86 GHz) Balanced Frequency Tripler for High-Speed Communications
- 2009
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Ingår i: APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE. - 9781424428014 ; 1-5, s. 1184-1187
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- An E-Band transistor-based balanced frequency tripler is implemented using a 0.15 mu m GaAs mHEMT process which can be integrated into a single-chip RF front-end. The balanced configuration with 90 degrees hybrids at the input and output improves the port impedance matching which is measured to be better than 15 dB at the input and 10 dB at the output over the frequencies of interest. The tripler has a conversion loss of 11.5 dB from 71 GHz to 76 GHz and 14 dB from 81 GHz to 86 GHz. The second and forth harmonics are suppressed by more than 30 dB and the fundamental frequency by 20 dB. The tripler can deliver -2 dBm output power.
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| 2. |
- Kaufmann, Thomas, et al.
(författare)
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Meshless eigenvalue analysis for resonant structures based on the radial point interpolation method
- 2009
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Ingår i: Microwave conference. - : IEEE. - 9781424428021 - 9781424428014 ; , s. 818-821
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Konferensbidrag (refereegranskat)abstract
- Meshless methods are a promising field of numerical methods recently introduced to computational electromagnetics. The potential of conformal and multi-scale modeling and the possibility of dynamic grid refinements are very attractive features that appear more naturally in meshless methods than in classical methods. The radial point interpolation method (RPIM) uses radial basis functions for the approximation of spatial derivatives. In this publication an eigenvalue solver is introduced for RPIM in electromagnetics. Eigenmodes are calculated on the example of a cylindrical resonant cavity. It is demonstrated that the computed resonance frequencies converge to the analytical values for increasingly fine spatial discretization. The computation of eigenmodes is an important tool to support research on a time-domain implementation of RPIM. It allows a characterization of the method's accuracy and to investigate stability issues caused by the possible occurrence of non-physical solutions
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| 3. |
- Zirath, Herbert, 1955, et al.
(författare)
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On the status of Low Noise Millimeterwave MMIC Receivers
- 2009
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Ingår i: APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE. - 9781424428014 ; 1-5, s. 1303-1306
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The status of integrated receivers for remote sensing and communication applications from 60 GHz to higher frequencies is reviewed. Recent receiver results for silicon and technologies are compared with Schottky diode receivers.
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