{"id":31565,"date":"1999-01-05T16:46:21","date_gmt":"1999-01-05T16:46:21","guid":{"rendered":"https:\/\/silvaco-stage.betagentechnologies.com\/%eb%b6%84%eb%a5%98%eb%90%98%ec%a7%80-%ec%95%8a%ec%9d%8c\/hints-tips-january-1999-2\/"},"modified":"2021-07-16T22:24:40","modified_gmt":"2021-07-17T05:24:40","slug":"hints-tips-january-1999-2","status":"publish","type":"post","link":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/hints-tips-january-1999-2\/","title":{"rendered":"Hints & Tips January 1999"},"content":{"rendered":"

Hints & Tips<\/h1>\n

Q.<\/b>\u00a0How can I obtain Fmax, Gmax, Upg and K factor plots from s-parameter measurements.<\/p>\n

A.<\/b>\u00a0Typically,\u00a0UTMOST III<\/i><\/b>\u00a0s-parameter module is used to measure the FT versus IC (collector current) characteristic of bipolar transistors. The FT_CE routine can also be utilized to extract important parameters such as Fmax, Gmax, Upg and K factor. These parameters provide a clear indication of the performance of the device as an amplifier.<\/p>\n

Brief description of these parameters as follows:<\/p>\n

GMAX (Maximum Available Gain):<\/p>\n

GMAX is the forward power gain when the input and output are simultaneously conjugately matched. GMAX is only defined for an unconditionally stable device. (K > 1).<\/p>\n

FMAX : The frequency where GMAX gain is equal to 1.<\/p>\n

K (Stability Factor):<\/p>\n

K is a measure of oscillatory tendency. For K < 1 the device is potentially unstable and can oscillate by the application of some combination of passive load and source admittances. For K>1 the device is unconditionally stable. K plays an important role in amplifier design.<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

A.\u00a0Typically,\u00a0UTMOST III\u00a0s-parameter module is used to measure the FT versus IC (collector current) characteristic of bipolar transistors. The FT_CE routine can also be utilized to extract important parameters such as Fmax, Gmax, Upg and K factor. These parameters provide a clear indication of the performance of the device as an amplifier.<\/p>\n","protected":false},"author":5,"featured_media":21843,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7486],"tags":[],"class_list":["post-31565","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-simulation-standard-ko","entry","has-media"],"_links":{"self":[{"href":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/wp-json\/wp\/v2\/posts\/31565","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/wp-json\/wp\/v2\/comments?post=31565"}],"version-history":[{"count":1,"href":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/wp-json\/wp\/v2\/posts\/31565\/revisions"}],"predecessor-version":[{"id":31570,"href":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/wp-json\/wp\/v2\/posts\/31565\/revisions\/31570"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/wp-json\/wp\/v2\/media\/21843"}],"wp:attachment":[{"href":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/wp-json\/wp\/v2\/media?parent=31565"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/wp-json\/wp\/v2\/categories?post=31565"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/silvaco-stage.betagentechnologies.com\/ko\/wp-json\/wp\/v2\/tags?post=31565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}