Understanding RF Power Amplifiers

<article class="4ever-article" data-clipboard-cangjie="["root",{},["h2",{"uuid":"lt5jvzcd8ftxl47rr9c","spacing":{"before":21.333333333333332,"after":12,"line":0.8529411764705882}},["span",{"data-type":"text"},["span",{"bold":true,"sz":16,"szUnit":"pt","data-type":"leaf"},"Definition"]]],["p",{"uuid":"lt5jxiknmfemvluoig"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"RF power amplifier (RF PA) is a key component in many wireless transmitters, used to amplify the electrical signals of radio frequency to higher power levels. It is commonly employed at the transmitting end of wireless communication systems, such as mobile base stations, radio transceivers, and satellite communication systems. RF power amplifiers can provide the required signal power so that the signal can cover longer distances or penetrate obstacles, thereby achieving reliable communication connections. Its fundamental design goal is to increase output power and efficiency while minimizing distortion and interference, ensuring the reliability and stability of signal transmission."]]],["h2",{"ind":{},"spacing":{"before":21.333333333333332,"after":12,"line":0.8529411764705882},"uuid":"lt5jvznz5u9s48w0796"},["span",{"data-type":"text"},["span",{"bold":true,"sz":16,"szUnit":"pt","data-type":"leaf"},"Classification"]]],["p",{"ind":{},"spacing":{},"uuid":"lt5jvzo0p7tfdq22qk"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"According to different operating conditions, power amplifiers are classified as follows:"]]],["table",{"colsWidth":[210,269],"uuid":"lt5jx1b4ev7jlj043hj","styleId":"tableHeader","tblLook":{"firstRow":1,"firstColumn":0,"lastRow":0,"lastColumn":0}},["tr",{"uuid":"lt5jx1b2pgsshy0jq7","isTblHeader":true},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b2e7akr6l4io5","vAlign":"top","fill":"#CBCCCD"},["p",{"uuid":"lt5jx1b2lchexzrg23","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},""]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b25icqe06a2pa","vAlign":"top","fill":"#CBCCCD"},["p",{"uuid":"lt5jx1b2hhx1hb24ckc","jc":"center"},["span",{"data-type":"text"},["span",{"bold":true,"color":"#FFFFFF","data-type":"leaf"},"Working Status"]]]]],["tr",{"uuid":"lt5jx1b2lsn7th7qbgi"},["tc",{"colSpan":1,"rowSpan":3,"uuid":"lt5jx1b2lefagjk9elp","vAlign":"middle","fill":"#F5F6F7"},["p",{"uuid":"lt5jx1b2nihu6rkvaa","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Linear Power Amplifier"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b2lyfkod3kleo","vAlign":"top"},["p",{"uuid":"lt5jx1b2dnjfyz5nkno","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Type A"]]]]],["tr",{"uuid":"lt5jx1b27idh94o7b09"},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b2o4j51wyss0o","vAlign":"middle","hidden":true,"fill":"#F5F6F7"},["p",{"uuid":"lt5jx1b2anuk55bp4l","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},""]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b2fmxidx4mzts","vAlign":"top"},["p",{"uuid":"lt5jx1b2eqy1szubz6b","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Type B"]]]]],["tr",{"uuid":"lt5jx1b2pev53gafvfc"},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b2mvgpchxgbp","vAlign":"middle","hidden":true,"fill":"#F5F6F7"},["p",{"uuid":"lt5jx1b2re8c4dzmwpd","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},""]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b2dvz84hihhn","vAlign":"top"},["p",{"uuid":"lt5jx1b2plbeojs0ku","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Type C"]]]]],["tr",{"uuid":"lt5jx1b2votfp0s449e"},["tc",{"colSpan":1,"rowSpan":3,"uuid":"lt5jx1b2il3ip1nayi","vAlign":"middle","fill":"#F5F6F7"},["p",{"uuid":"lt5jx1b2gzeh1azvld4","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Switching Power Amplifier"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b25nh56e5eljy","vAlign":"top"},["p",{"uuid":"lt5jx1b2favjcdm4scv","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Type D"]]]]],["tr",{"uuid":"lt5jx1b4dsg33avj0me"},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b2nisjhuho7k","vAlign":"middle","hidden":true,"fill":"#F5F6F7"},["p",{"uuid":"lt5jx1b2twflh5a76x","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},""]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b45rxiwun2ajd","vAlign":"top"},["p",{"uuid":"lt5jx1b4ba9qvvdvejq","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Type E"]]]]],["tr",{"uuid":"lt5jx1b4so9j08v3enj"},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b4v8ozktbalcf","vAlign":"middle","hidden":true,"fill":"#F5F6F7"},["p",{"uuid":"lt5jx1b4ctzqpy3brms","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},""]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jx1b4yuz8jekzwa","vAlign":"top"},["p",{"uuid":"lt5jx1b4nqmq9w00kcm","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Type F"]]]]]],["p",{"ind":{},"spacing":{},"uuid":"lt5jwwem35xy0cu4ltg"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Traditional linear power amplifiers have very high operating frequencies, but their bandwidth is relatively limited. Frequency selection networks are often used as load loops in RF power amplifiers."]]],["p",{"ind":{},"spacing":{},"uuid":"lt5jxozf991tsc13dyf"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"According to the conduction angle, RF power amplifiers can be divided into three working states A, B, and C:"]]],["p",{"ind":{"left":0},"list":{"listId":"ky488mnkl3k","isOrdered":true,"level":0,"listStyle":{"format":"decimal","text":"%1.","align":"left"},"symbolStyle":{"shd":null}},"uuid":"lt5jvzo27gg7y96ifzu"},["span",{"data-type":"text"},["span",{"bold":true,"data-type":"leaf"},"Class A"],["span",{"data-type":"leaf"}," amplifier has a conduction angle of 360°, which is very suitable for low-power amplification of small signals;"]]],["p",{"ind":{"left":0},"list":{"listId":"ky488mnkl3k","isOrdered":true,"level":0,"listStyle":{"format":"decimal","text":"%1.","align":"left"},"symbolStyle":{"shd":null}},"uuid":"lt5jvzo2yvifepkkdc"},["span",{"data-type":"text"},["span",{"bold":true,"data-type":"leaf"},"Class B"],["span",{"data-type":"leaf"}," amplifier has a conduction angle of 180°;"]]],["p",{"ind":{"left":0},"list":{"listId":"ky488mnkl3k","isOrdered":true,"level":0,"listStyle":{"format":"decimal","text":"%1.","align":"left"},"symbolStyle":{"shd":null}},"uuid":"lt5jvzo3o9tnda8lax"},["span",{"data-type":"text"},["span",{"bold":true,"data-type":"leaf"},"Class C"],["span",{"data-type":"leaf"}," amplifier has a conduction angle less than 180° ;"]]],["p",{"ind":{"left":0},"uuid":"lt5jx61snvmd8utzov"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Most RF power amplifiers operate in Class C, but the current waveform of Class C amplifiers is too distorted, and only resonant power of the load can be increased by tuning the loop. Due to the filtering capability of the tuning loop, the loop current and voltage still closely resemble a sine waveform, with low distortion."]]],["p",{"ind":{},"spacing":{},"uuid":"lt5jvzo33pkhi4e3npi"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Traditional linear power amplifiers have high gain and linearity but low efficiency, while switching power amplifiers have high efficiency but poor linearity. Details are shown in the table below:\n"]]],["table",{"colsWidth":[169,117,117,117,117,117,117,109],"styleId":"tableHeader","tblLook":{"firstColumn":0,"firstRow":1,"lastColumn":0,"lastRow":0},"uuid":"lt5jwkb81z9bza3ntt"},["tr",{"uuid":"lt5jwkb88h76lk8871a","isTblHeader":true,"h":44},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb74iv8lsar6l","vAlign":"middle","fill":"#CBCCCD"},["p",{"uuid":"lt5jwkb7t2ty9g8pxn","jc":"center"},["span",{"data-type":"text"},["span",{"bold":true,"color":"#FFFFFF","data-type":"leaf"},"Type"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb7ufybh0wc6i","vAlign":"middle","fill":"#CBCCCD"},["p",{"uuid":"lt5jwkb7lau807w7oem","jc":"center"},["span",{"data-type":"text"},["span",{"bold":true,"color":"#FFFFFF","data-type":"leaf"},"A"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb7cz6fewa2zl6","vAlign":"middle","fill":"#CBCCCD"},["p",{"uuid":"lt5jwkb7576ziel6v73","jc":"center"},["span",{"data-type":"text"},["span",{"bold":true,"color":"#FFFFFF","data-type":"leaf"},"AB"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb7g2yuqza5374","vAlign":"middle","fill":"#CBCCCD"},["p",{"uuid":"lt5jwkb7eprdktql8uu","jc":"center"},["span",{"data-type":"text"},["span",{"bold":true,"color":"#FFFFFF","data-type":"leaf"},"B"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb7ql6fwtdanzn","vAlign":"middle","fill":"#CBCCCD"},["p",{"uuid":"lt5jwkb76iwdeednek","jc":"center"},["span",{"data-type":"text"},["span",{"bold":true,"color":"#FFFFFF","data-type":"leaf"},"C"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8yes4t8fbfij","vAlign":"middle","fill":"#CBCCCD"},["p",{"uuid":"lt5jwkb7gn4cqbjdky","jc":"center"},["span",{"data-type":"text"},["span",{"bold":true,"color":"#FFFFFF","data-type":"leaf"},"D"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8k2f3nrf5r0e","vAlign":"middle","fill":"#CBCCCD"},["p",{"uuid":"lt5jwkb84db5o1h1yhi","jc":"center"},["span",{"data-type":"text"},["span",{"bold":true,"color":"#FFFFFF","data-type":"leaf"},"E"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb83ymi1md5clc","vAlign":"middle","fill":"#CBCCCD"},["p",{"uuid":"lt5jwkb89z3ho4wba8k","jc":"center"},["span",{"data-type":"text"},["span",{"bold":true,"color":"#FFFFFF","data-type":"leaf"},"F"]]]]],["tr",{"uuid":"lt5jwkb8srnmhns2fb","h":41},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5kcoixy632lb3bh3p","vAlign":"middle","fill":"#F5F6F7"},["p",{"uuid":"lt5kcoivq5gi5azmlgd","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Operating Mode"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8xv6ulplz8kn","vAlign":"middle"},["p",{"uuid":"lt5jwkb8r1ylyjfbt9q","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Power flow"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb84uwpl7nbn4u","vAlign":"middle"},["p",{"uuid":"lt5jwkb8a6demqbhsko","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Power flow"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8ouumt5yg72","vAlign":"middle"},["p",{"uuid":"lt5jwkb8gjba7lfl0oi","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Power flow"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8c4qimpjln8w","vAlign":"middle"},["p",{"uuid":"lt5jwkb8u0b1izvh2ll","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Power flow"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8akj04tp3ab","vAlign":"middle"},["p",{"uuid":"lt5jwkb8lphvcsmia4o","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Switch"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8fylnivd3bgm","vAlign":"middle"},["p",{"uuid":"lt5jwkb85xh78qvpmpn","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Switch"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb886adof7rizd","vAlign":"middle"},["p",{"uuid":"lt5jwkb8r4hywbm4eum","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Switch"]]]]],["tr",{"uuid":"lt5jwkb89lyrsw8mzk"},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5kcoj0ln78hkdwyy","vAlign":"middle","fill":"#F5F6F7"},["p",{"uuid":"lt5kcoizvwzq8x1u5eg","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Conduction Angle"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8keqq6qm5z1","vAlign":"middle"},["p",{"uuid":"lt5jwkb8mhlxvn6qyqg","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"2π"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8f2zl438fa","vAlign":"middle"},["p",{"uuid":"lt5jwkb8yi1p4raxckm","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"π~2π"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8z90wmujgo4","vAlign":"middle"},["p",{"uuid":"lt5jwkb8rhevbqo4jq","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"π"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8elkab25brx","vAlign":"middle"},["p",{"uuid":"lt5jwkb8zg2jmfsmc5","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"0~π"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8sky1t8d3xl","vAlign":"middle"},["p",{"uuid":"lt5jwkb8frbmuu7t5cr","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"π"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8wbt0l5k0up","vAlign":"middle"},["p",{"uuid":"lt5jwkb87nbskbnyfrs","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"π"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb83ezbj941bsn","vAlign":"middle"},["p",{"uuid":"lt5jwkb8571ym6kbj8c","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"π"]]]]],["tr",{"uuid":"lt5jwkb8q57o0bx5f0h"},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8g33fac8wn89","vAlign":"middle","fill":"#F5F6F7"},["p",{"uuid":"lt5jwkb88yfxsuv53bs","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Output Power"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8txn60bf2dga","vAlign":"middle"},["p",{"uuid":"lt5jwkb8a64odxb22y","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Middle"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8ut2k7838u5a","vAlign":"middle"},["p",{"uuid":"lt5jwkb88k1t7lnq7gb","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Middle"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8uo17thypxi","vAlign":"middle"},["p",{"uuid":"lt5jwkb8d0qi40cwnv","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Middle"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb82sr33agv6yk","vAlign":"middle"},["p",{"uuid":"lt5jwkb8tj3qltlv3ur","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Low"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb86b5o1sgafmr","vAlign":"middle"},["p",{"uuid":"lt5jwkb87nupta8y3la","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"High"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb86fkh7pilfw7","vAlign":"middle"},["p",{"uuid":"lt5jwkb8m0itcvkqhn","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"High"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb84ivl7bzqwmv","vAlign":"middle"},["p",{"uuid":"lt5jwkb8laihv4xx1q","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"High"]]]]],["tr",{"uuid":"lt5k7cxswhh4uo48l3h"},["tc",{"fill":"#F5F6F7","colSpan":1,"rowSpan":1,"uuid":"lt5k7cxsv0mrm65mfh8","vAlign":"top"},["p",{"uuid":"lt5k7cxsa8w95a21p3i"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Theoretical Efficiency"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5k7cxsasmswxe62n","vAlign":"top"},["p",{"uuid":"lt5k7cxsmkkb6tgstok","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"50%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5k7cxsn4jq9z6tus","vAlign":"top"},["p",{"uuid":"lt5k7cxshy4zsm5gy05","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"50%~78.5%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5k7cxsh6v5qfdkm1g","vAlign":"top"},["p",{"uuid":"lt5k7cxs9ok6tpuvbwp","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"78.5%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5k7cxsnybtvbe8pb","vAlign":"top"},["p",{"uuid":"lt5k7cxs7nhpwgakeo9","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"78.5%~100%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5k7cxscp958a9tqh","vAlign":"top"},["p",{"uuid":"lt5k7cxst22ebvflftg","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"100%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5k7cxsgjd5gumo2ra","vAlign":"top"},["p",{"uuid":"lt5k7cxs5p85xlaa2l6","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"100%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5k7cxs7xuci7z02s7","vAlign":"top"},["p",{"uuid":"lt5k7cxs5c4qc6koigy","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"100%"]]]]],["tr",{"uuid":"lt5jwkb8znne13io3e","h":41},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8a43g3tdr5ck","vAlign":"middle","fill":"#F5F6F7"},["p",{"uuid":"lt5jwkb8ia8edoi49js","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Typical Efficiency"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8kruyhxt2us","vAlign":"middle"},["p",{"uuid":"lt5jwkb8g5xz6q64f5g","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"35%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8qz6nfg57e7","vAlign":"middle"},["p",{"uuid":"lt5jwkb87pgijcv63ig","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"35%~60%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8pt5bresao88","vAlign":"middle"},["p",{"uuid":"lt5jwkb8yquyikqwvo","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"60%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8dfulkt0hism","vAlign":"middle"},["p",{"uuid":"lt5jwkb8g33fpxa5l0v","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"70%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8ogayrlrfgq","vAlign":"middle"},["p",{"uuid":"lt5jwkb8y51kwhzb8c","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"75%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8uoiazhpmixe","vAlign":"middle"},["p",{"uuid":"lt5jwkb8256fodcxij1i","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"80%"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8zhyui33s9ki","vAlign":"middle"},["p",{"uuid":"lt5jwkb8f3v4bwvvdrr","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"75%"]]]]],["tr",{"uuid":"lt5jwkb8qgihzo7jzhc"},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb89ep5wek7f6n","vAlign":"middle","fill":"#F5F6F7"},["p",{"uuid":"lt5jwkb8oddx8hx4l99","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Gain"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8b70irrwc3vi","vAlign":"middle"},["p",{"uuid":"lt5jwkb8bobhxui8g3","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"High"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8lcfpn46yj7","vAlign":"middle"},["p",{"uuid":"lt5jwkb84zthp2700qi","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Middle"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8l251f03yoko","vAlign":"middle"},["p",{"uuid":"lt5jwkb848n8uy7c90e","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Middle"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8y7oh266b6qr","vAlign":"middle"},["p",{"uuid":"lt5jwkb80hpzm047xgj","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Low"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8g0xqjlidn8","vAlign":"middle"},["p",{"uuid":"lt5jwkb8lsj62102fhk","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Low"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8fwkbtggn7sf","vAlign":"middle"},["p",{"uuid":"lt5jwkb8f2epjy8e5on","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Low"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb81fqgc40dzzt","vAlign":"middle"},["p",{"uuid":"lt5jwkb8wrlgn0gs7gm","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Low"]]]]],["tr",{"uuid":"lt5jwkb8ekh0irnoo97"},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8ik64drs5sfg","vAlign":"middle","fill":"#F5F6F7"},["p",{"uuid":"lt5jwkb89348jskwfa","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Linearity"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8v07ac6ls8je","vAlign":"middle"},["p",{"uuid":"lt5jwkb8ltiqvxi2xz","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Excellent"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb85ar5kkbptuo","vAlign":"middle"},["p",{"uuid":"lt5jwkb8agfwv6lbgjk","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Good"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8ugo5gb6fom","vAlign":"middle"},["p",{"uuid":"lt5jwkb8wxac9t9jbee","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Good"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8xbfn7t7pqdk","vAlign":"middle"},["p",{"uuid":"lt5jwkb8x9shf2yh76d","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Bad"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8qvutyskrxx","vAlign":"middle"},["p",{"uuid":"lt5jwkb8b1do4edaw2r","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Bad"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb88xqfegz5wad","vAlign":"middle"},["p",{"uuid":"lt5jwkb82mizr2antbm","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Bad"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8r2q0tk8smq","vAlign":"middle"},["p",{"uuid":"lt5jwkb8smu8zlfku88","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"Bad"]]]]],["tr",{"uuid":"lt5jwkb8by1idz8wg2t","h":65},["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8v7yl5sdryck","vAlign":"middle","fill":"#F5F6F7"},["p",{"uuid":"lt5jwkb8kx851w274nq","jc":"center"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"Peak Drain Voltage"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb87nvw26gr8","vAlign":"middle"},["p",{"uuid":"lt5jwkb81mkv2tnufk6i","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"2Vdc"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb82fiqggwi8ow","vAlign":"middle"},["p",{"uuid":"lt5jwkb8izb6euw0wrf","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"2Vdc"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb89ufb2y34ggs","vAlign":"middle"},["p",{"uuid":"lt5jwkb8d5vhmtrbrvj","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"2Vdc"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8o6rc6g3mx1l","vAlign":"middle"},["p",{"uuid":"lt5jwkb883udf85mozy","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"2Vdc"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8tocrsl1dqsr","vAlign":"middle"},["p",{"uuid":"lt5jwkb8r1me1d91uxb","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"2Vdc"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8om1lfq7031n","vAlign":"middle"},["p",{"uuid":"lt5jwkb83ud9gohdu7n","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"3.6Vdc"]]]],["tc",{"colSpan":1,"rowSpan":1,"uuid":"lt5jwkb8awxul27p0fa","vAlign":"middle"},["p",{"uuid":"lt5jwkb8y2vsmhn1xj7","jc":"center"},["span",{"data-type":"text"},["span",{"sz":11,"szUnit":"pt","data-type":"leaf"},"2Vdc"]]]]]],["p",{"ind":{},"spacing":{},"uuid":"lt5jvzo3squ3y1bym8"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"The function of an amplifier is to amplify the received signal and output it, usually described in terms of voltage or power. Its core function is to enhance the input signal and output a stronger signal."]]],["p",{"ind":{},"spacing":{},"uuid":"lt5jxucvalnzbuon9pj"},["span",{"data-type":"text"},["span",{"data-type":"leaf"},"A well-functioning amplifier can effectively boost the signal and demonstrate its value; however, if the amplifier malfunctions and fails to work properly after a period of time, or even experiences unexpected oscillations, it can be a disaster for the external environment."]]],["h2",{"ind":{},"spacing":{"before":21.333333333333332,"after":12,"line":0.8529411764705882},"uuid":"lt5jvzo4phfrq0p37ds"},["span",{"data-type":"text"},["span",{"bold":true,"sz":16,"szUnit":"pt","data-type":"leaf"},"Nine main performance indicators of RF amplifiers"]]],["h4",{"ind":{"hanging":0,"left":0},"uuid":"lt5jvzo4huxm77yn6ed","list":{"listId":"heading-j7sppx51cl8","level":3,"isOrdered":true,"isTaskList":false,"listStyleType":"DEC_DEC_DEC_P","symbolStyle":{"sz":12,"bold":true},"listStyle":{"format":"decimal","text":"%1","align":"left"},"hideSymbol":false,"autoLevel":true},"spacing":{"before":16,"after":12,"line":0.8529411764705882}},["span",{"data-type":"text"},["span",{"bold":true,"sz":12,"szUnit":"pt","data-type":"leaf"},"Output power and 1dB compression point (P1dB)"]]],["p",{"ind":{},"spacing":{},"uuid":"lt5jvzo5e2qw2app5qs&am