RF Classics http://mwrf.com/taxonomy/term/7071/more en Wideband DMOS Amplifier Competes with Bipolars http://mwrf.com/rf-classics/wideband-dmos-amplifier-competes-bipolars <div class="field-byline"> Johnny K.O. Sin and C. Andre T. Salama </div> <div class="field-deck"> The inherent advantages of double-diffused MOS devices may make them suitable replacements for bipolars in high-frequency, high-power applications. </div> <div class="node-body article-body">The inherent advantages of double-diffused MOS devices may make them suitable replacements for bipolars in high-frequency, high-power applications.</div> <div class="og_rss_groups"></div><p><a href="http://mwrf.com/rf-classics/wideband-dmos-amplifier-competes-bipolars" target="_blank">read more</a></p> http://mwrf.com/rf-classics/wideband-dmos-amplifier-competes-bipolars#comments RF Classics Wed, 29 Jan 2014 21:00:00 +0000 22011 at http://mwrf.com Beam Pointing Direction of Traveling-Wave Arrays http://mwrf.com/rf-classics/beam-pointing-direction-traveling-wave-arrays <div class="field-byline"> William J. Wellman and Sanford S. Shapiro </div> <div class="field-deck"> A series of curves for dielectric-filled waveguide arrays illustrate how the beam direction is dependent on various array parameters. Example problems consider the various tradeoffs available. </div> <div class="node-body article-body">A series of curves for dielectric-filled waveguide arrays illustrate how the beam direction is dependent on various array parameters. Example problems consider the various tradeoffs available.</div> <div class="og_rss_groups"></div><p><a href="http://mwrf.com/rf-classics/beam-pointing-direction-traveling-wave-arrays" target="_blank">read more</a></p> http://mwrf.com/rf-classics/beam-pointing-direction-traveling-wave-arrays#comments RF Classics Mon, 16 Dec 2013 16:35:00 +0000 21021 at http://mwrf.com Design Tips on Dielectric Waveguide http://mwrf.com/rf-classics/design-tips-dielectric-waveguide <div class="field-byline"> Calvin C. Jones, Vernon H. Walker, and Harold Smith </div> <div class="field-deck"> Material selection, plating methods, joining multiple sections, temperature stability and tests of parameters are detailed together with suggestions for extended applications. </div> <div class="node-body article-body">Material selection, plating methods, joining multiple sections, temperature stability and tests of parameters are detailed together with suggestions for extended applications.</div> <div class="og_rss_groups"></div><p><a href="http://mwrf.com/rf-classics/design-tips-dielectric-waveguide" target="_blank">read more</a></p> http://mwrf.com/rf-classics/design-tips-dielectric-waveguide#comments RF Classics Tue, 10 Dec 2013 20:42:00 +0000 20881 at http://mwrf.com Design for Strip-Line Band-Pass Filters http://mwrf.com/rf-classics/design-strip-line-band-pass-filters <div class="field-byline"> J.K. Richardson </div> <div class="field-deck"> Strip widths and gap spacings are given in graphical form for band-pass filters using symmetrical strip lines. </div> <div class="node-body article-body">Strip widths and gap spacings are given in graphical form for band-pass filters using symmetrical strip lines.</div> <div class="og_rss_groups"></div><p><a href="http://mwrf.com/rf-classics/design-strip-line-band-pass-filters" target="_blank">read more</a></p> http://mwrf.com/rf-classics/design-strip-line-band-pass-filters#comments RF Classics Mon, 09 Dec 2013 20:46:00 +0000 20861 at http://mwrf.com Microwave Diodes… Why a Schottky-barrier? Why a Point-contact? http://mwrf.com/rf-classics/microwave-diodes-why-schottky-barrier-why-point-contact <div class="field-byline"> Robert Bayliss, Eduardo Cabrera, and Stanley Howe </div> <div class="field-deck"> A careful appraisal of each diode—its strong points and its weaknesses. Performance curves offer a ready comparison for deciding which type best suits a particular application. </div> <div class="node-body article-body">A careful appraisal of each diode—its strong points and its weaknesses. Performance curves offer a ready comparison for deciding which type best suits a particular application.</div> <div class="og_rss_groups"></div><p><a href="http://mwrf.com/rf-classics/microwave-diodes-why-schottky-barrier-why-point-contact" target="_blank">read more</a></p> http://mwrf.com/rf-classics/microwave-diodes-why-schottky-barrier-why-point-contact#comments RF Classics Mon, 09 Dec 2013 15:18:00 +0000 20791 at http://mwrf.com How to Use Lumped Constants in Microwave Circuit Design http://mwrf.com/rf-classics/how-use-lumped-constants-microwave-circuit-design <div class="field-byline"> S.J. Gourse and R.F. David </div> <div class="field-deck"> Design and fabrication techniques for lumped-element circuits at microwave frequencies. A1.0-Gc, two-stage transistor amplifier illustrates the design procedure. Thin films and bonded transistor chips are used. </div> <div class="node-body article-body">Design and fabrication techniques for lumped-element circuits at microwave frequencies. A1.0-Gc, two-stage transistor amplifier illustrates the design procedure. Thin films and bonded transistor chips are used.</div> <div class="og_rss_groups"></div><p><a href="http://mwrf.com/rf-classics/how-use-lumped-constants-microwave-circuit-design" target="_blank">read more</a></p> http://mwrf.com/rf-classics/how-use-lumped-constants-microwave-circuit-design#comments RF Classics Fri, 06 Dec 2013 17:20:00 +0000 20771 at http://mwrf.com Let’s Talk Gridded Tubes http://mwrf.com/rf-classics/let-s-talk-gridded-tubes <div class="field-byline"> J.W. Rush </div> <div class="field-deck"> Gridded triodes are proven practical for amplifiers to 5 Gc and for oscillators to 10 Gc. Here are the best ways of selecting and using these tubes. </div> <div class="node-body article-body">Gridded triodes are proven practical for amplifiers to 5 Gc and for oscillators to 10 Gc. Here are the best ways of selecting and using these tubes.</div> <div class="og_rss_groups"></div><p><a href="http://mwrf.com/rf-classics/let-s-talk-gridded-tubes" target="_blank">read more</a></p> http://mwrf.com/rf-classics/let-s-talk-gridded-tubes#comments RF Classics Wed, 20 Nov 2013 16:25:00 +0000 20251 at http://mwrf.com Obtaining Beam-Pointing Accuracy with Cassegrain Antennas http://mwrf.com/rf-classics/obtaining-beam-pointing-accuracy-cassegrain-antennas <div class="field-byline"> Anthony M. Isber </div> <div class="field-deck"> All factors that affect beam-pointing accuracy are evaluated; formulas are developed for quantitative determinations. </div> <div class="node-body article-body">All factors that affect beam-pointing accuracy are evaluated; formulas are developed for quantitative determinations.</div> <div class="og_rss_groups"></div><p><a href="http://mwrf.com/rf-classics/obtaining-beam-pointing-accuracy-cassegrain-antennas" target="_blank">read more</a></p> http://mwrf.com/rf-classics/obtaining-beam-pointing-accuracy-cassegrain-antennas#comments RF Classics Tue, 19 Nov 2013 19:37:00 +0000 20221 at http://mwrf.com Lasers vs. Microwaves for Deep-Space Communications http://mwrf.com/rf-classics/lasers-vs-microwaves-deep-space-communications <div class="field-byline"> Edwards C. Park and Lyle S. Stokes </div> <div class="field-deck"> Detailed system analysis shows merit for both approaches. The authors also examine a hybrid system combining the best features of lasers and microwaves. </div> <div class="node-body article-body">Detailed system analysis shows merit for both approaches. The authors also examine a hybrid system combining the best features of lasers and microwaves.</div> <div class="og_rss_groups"></div><p><a href="http://mwrf.com/rf-classics/lasers-vs-microwaves-deep-space-communications" target="_blank">read more</a></p> http://mwrf.com/rf-classics/lasers-vs-microwaves-deep-space-communications#comments RF Classics Tue, 19 Nov 2013 16:48:00 +0000 20181 at http://mwrf.com Plans Detailed for Domestic Comsat http://mwrf.com/rf-classics/plans-detailed-domestic-comsat <div class="field-deck"> “Pilot” satellite would carry 24 transponders. Up to 36 ground antennas involved. </div> <div class="node-body article-body">“Pilot” satellite would carry 24 transponders. Up to 36 ground antennas involved.</div> <div class="og_rss_groups"></div><p><a href="http://mwrf.com/rf-classics/plans-detailed-domestic-comsat" target="_blank">read more</a></p> http://mwrf.com/rf-classics/plans-detailed-domestic-comsat#comments RF Classics Wed, 13 Nov 2013 19:23:00 +0000 20081 at http://mwrf.com