By Peter C. L. Yip (auth.)
An non-obligatory direction within the final-year BEng progamme in digital engin eering within the urban Polytechnic of Hong Kong was once generated in line with the transforming into desire of neighborhood for graduate engineers in a position to designing circuits and acting measurements at excessive frequencies as much as a number of gigahertz. This ebook has grown out from the lecture and instructional fabrics written in particular for this path. This path may still, within the opinion of the writer, top be carried out if scholars can take a final-year layout undertaking within the similar region. Examples of initiatives in components concerning the subject material of this ebook which were accomplished effectively within the final years that the path has been run contain: low-noise amplifiers, dielectric resonator-loaded oscillators and down converters within the 12 GHz in addition to the 1 GHz bands; mixers; varactor-tuned and non-varactor-tuned VCOs; low-noise and tool amplifiers; and filters and duplexers within the 1 GHz, 800 MHz and 500 MHz bands. The booklet is meant to be used in a process 40 lecture hours plus twenty instructional hours and the prerequisite anticipated of the readers is a basic wisdom of analogue digital circuits and easy box thought. Readers without previous wisdom in high-frequency circuits are recom mended to learn the ebook within the order that it's prepared. ~ ______ In_t_ro_d_u_c_tl_·o_n ______ ~1 ~ 1.
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Additional info for High-Frequency Circuit Design and Measurements
P. (1976) 2-18GHz Dispersion measurement on 10-100 ohm microstrip lines on sapphire, IEEE Trans. 8, August. C. (1981) Foundation for Microstrip Cricuit Design, Wiley. J. (1973) Microstrip dispersion model, IEEE trans. 1, January, 34-9. S. (1984) Practical Microwaves, Howard W. Sams. S. (1984) Microwave Materials and Fabrication Techniques, Artech House. G. G. (1956) The design of tetrode transistor ampifier. S. , 35, 813-40. Product Bulletin for GT, GX, LX and £-10 Copper Clad Dielectric Laminates, Electronic Products Division, 3M.
33] 01 IMPEDANCE MATCHING L -_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ~ with a reactive element jX2 , so that the series resistance of the (R 2 ,jX2 ) combination has a smaller value than R2 , and X 2 is so chosen that this series resistance is equal to R I . In so choosing X 2 , X 2 could be positive or negative, depending on the designer's assignment. Xl is then chosen to be equal to and opposite in sign to the series reactance of the (R 2 , jX2) combination, so that the reactive part of the (RbjXI ) combination and that of the (R 2 ,jX2 ) combination neutralize each other (or resonate) at the operating frequency.
C. is to be blocked. 2) Fig. 14 Two-element Smith-chart matching. In designing two-element matching networks using Smith chart, the operating Q is not up to the designer's choice, but is rather predetermined by the terminating resistances R 1 and R 2 . In the example shown in Fig. 14 and Fig. 2) to be equal to 2. 15 An alternative solution to the example in Fig. 13. 2) Fig. 16 An alternative solution to Fig. 14. is associated with a Q-value equal to the ratio of the reactive part (or susceptance part) to the resistive part (or conductance part) of the immittance of that point.