By K. C. Gupta, Peter S. Hall
With communications applied sciences quickly increasing, the normal separation of digital circuits and antenna platforms layout isn't any longer possible. This ebook covers numerous layout techniques acceptable to built-in circuit-antenna modules with the target of putting the antenna, transmitter, and receiver all on a unmarried chip. It emphasizes research and layout concerning the combination of circuit services with radiating components and addresses traits in structures miniaturization.
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Extra info for Analysis and Design of Integrated Circuit-Antenna Modules
However, these modi®cations are hopefully very small. The aim of the CAD method is to minimize the experimental iterations as far as practicable. The process of CAD, as outlined above, consists of three important segments, namely, (1) modeling, (2) analysis, and (3) optimization. Modeling involves characterization of various active and passive components to the extent of providing a numerical model that can be handled by the computer. In the case of microwave circuit±antenna modules, one comes across a variety of active and passive elements.
Setting G À S W, we have a WÀ1 c Mc 2:29 W is called the connection-scattering matrix. For our example of Fig. 11a, W may be written as P T T T T T 3T T 4T T T 5T T 6T T T 7T T 8R 1 2 1 2 3 4 5 6 7 8 S ÀS11 1 0 0 0 0 0 0 1 A ÀS11 A ÀS12 0 0 0 0 0 A ÀS21 A ÀS22 1 0 0 0 0 0 1 B ÀS11 B ÀS12 0 0 B ÀS22 1 0 0 0 0 B ÀS21 0 0 0 0 1 C ÀS11 C ÀS12 0 0 0 0 0 C ÀS21 C ÀS22 0 0 0 0 0 0 1 Q U 0 U U U 0 U U U 0 U U U 0 U U U 0 U U U 1 U S 2:30 L ÀS11 We note that the main diagonal elements in W are the negative of the re¯ection coef®cients at the various component ports.
Vol. MTT32, Jan. 1984, pp. 97±102. 40. Hwang, V. , ``Quasi-optical HEMT and MESFET self oscillating mixers,'' IEEE Trans. , vol. MTT-36, Dec. 1988, pp. 1701±1705. 41. Haskins, P. , Hall, P. , and Dahele, J. , ``Active patch antenna with diode tuning,'' Electron. , vol. 27, no. 20, 26 Sept. 1991, pp. 1846±1847. 42. Haskins, P. , and Dahele, J. , ``Compact active polarisation-agile antennas using square patch,'' Electron. , vol. 3, no. 1, Aug. 1995, pp. 1305±1306. 43. , ``Optical tuning range comparison of uniplanar active integrated antenna using MESFET, GaAs HEMT and pseudomorphic HEMT,'' Proceedings Fourth International Symposium Space Terahertz Technology, Mar.
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