Microstrip Antennas: The Analysis and Design of Microstrip by David M. Pozar
By David M. Pozar
"This anthology combines 15 years of microstrip antenna know-how learn into one major quantity and incorporates a particular introductory instructional through the co-editors. masking conception, layout and modeling options and strategies, this resource publication is a superb reference device for engineers who are looking to turn into extra conversant in microstrip antennas and microwave structures. confirmed antenna designs, novel options to functional layout problemsand appropriate papers describing the speculation of operation and research of microstrip antennas are contained inside this useful reference."
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B. , MTT-20, pp. 669-678 DELOGNE, P. (1970): 'On Wu's theory of microstrip', Electron. ,6, pp. 541-542 DENLINGER, E. J. , MTT-19, pp. , and JUNG, H. J. (1970): 'Measurement of the effective dielectric constant of microstrip lines in the frequency range 2 GHz to 12 GHz*, Nachrichtentech. , 23, pp. 620-624 EASTER, B. (1975): 'The equivalent circuit of some microstrip discontinuities', IEEE Trans, MTT-23, pp. , and ADAMS, A. T. , MTT-20, pp. , and ZUZUKI, M. (1972): 'Analysis of strip transmission lines by interaction methods', Electron.
This important development enables a precise comparison to be made between a large number of methods and the results are reproduced in Figs. 6 showing a considerable discrepancy between the various data for ee and hence 0. The problem is that the various analysis all use different forms for the strip current distribution and it is deduced by Kuester and Chang (1979) that the analyses of Jansen (1978), Fujiki et al. (1972), Kowalski and Pregla (1972), Pregla and Kowalski (1974), Van de Capelle and Luypaert (1973) and (1974), are likely to give the most accurate parameter values; the accuracy could be of the order ±1%, which appears to be good until we consider the application to a long antenna feeder.
1 summarises some of the main points made. 1 Comparison of flat-profile antenna types Advantages Disadvantages Microstrip antennas 1. Thin profile 2. Light weight 3. Simple manufacture 4. Can be made conformal 5. Low cost 6. Integration with circuits 1. Extraneous radiation from feeds, junctions and surface waves 2. Low efficiency 3. Smaller bandwidth 4. Additional tolerance problems Triplate 1. Thin profile 2. Light weight 3. Shielded feed lines 4. Can be made conformal 1. Complex manufacture 2.