Switches and Attenuators
- 185 Downloads
In the design of microwave switches — where the diode control element is expected to switch between nearly open and nearly short circuit impedances — it would seem that only the use of packageless diodes is practical since the parasitic inductance and capacitance associated with diode packages cannot help but have an adverse effect on switching performance. Though this observation is correct, packaged diodes offer many advantages. Switches can be built with replaceable diode sockets, permitting simple maintenance; packaged diodes can be used, eliminating the need for the skilled labor required for chip assembly. The interchange-ability of diodes in packaged form affords the possibility of special fine tuning which is impractical with diode chips that are soldered or bonded into the switch device.
KeywordsInsertion Loss Forward Bias Coaxial Line Switching Element Center Conductor
Unable to display preview. Download preview PDF.
- Matthaei, G.L.; Young, L.; and Jones, E.M.T.: Microwave Filters, Impedance-Matching Networks, and Coupling Structures, McGraw-Hill Inc., New York, 1964.Google Scholar
- Young, L.: “Tables for Cascaded Homogeneous Quarter Wave Transformers,” IEEE Transactions on Microwave Theory and Techniques, Vol. MTT-7, No. 1, pp. 233–237, January 1959. (Note — Corrections to four section designs appear in IEEE Transactions on Microwave Theory and Techniques, Vol. MTT-8, No. 2, pp. 243–244, March 1960; also, transformer designs by Young are also described in Reference 3 above.CrossRefGoogle Scholar
- White, J.F.: “High Power Solid State Switching,” 1964 International Solid-State Circuits Conference — Digest of Technical Papers, pp. 30–31.Google Scholar
- Armstrong, A.L.; and Bakeman, P.E.: “Fast, High Power, Waveguide Bandwidth Microwave Switch,” IEEE MTT Symposium Digest, 1976.Google Scholar