Class information for:
Level 1: HETEROJUNCTION BIPOLAR TRANSISTORS//HBT//HETEROJUNCTION BIPOLAR TRANSISTOR HBT

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
1985 2396 14.3 63%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
2 4 MATERIALS SCIENCE, MULTIDISCIPLINARY//PHYSICS, APPLIED//PHYSICS, CONDENSED MATTER 2836879
6 3       PHYSICS, APPLIED//IEEE TRANSACTIONS ON ELECTRON DEVICES//SILICON 155028
1699 2             HETEROJUNCTION BIPOLAR TRANSISTORS//SIGEHBT//HBT 6741
1985 1                   HETEROJUNCTION BIPOLAR TRANSISTORS//HBT//HETEROJUNCTION BIPOLAR TRANSISTOR HBT 2396

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 HETEROJUNCTION BIPOLAR TRANSISTORS authKW 1226817 9% 44% 217
2 HBT authKW 634098 6% 33% 149
3 HETEROJUNCTION BIPOLAR TRANSISTOR HBT authKW 403685 4% 37% 85
4 HETEROJUNCTION BIPOLAR TRANSISTORS HBTS authKW 285451 2% 39% 57
5 OFFSET VOLTAGE authKW 229495 2% 49% 37
6 POTENTIAL SPIKE authKW 209088 1% 86% 19
7 DHBT authKW 205567 1% 73% 22
8 DOUBLE HETEROJUNCTION BIPOLAR TRANSISTORS DHBTS authKW 159276 1% 83% 15
9 GRADED BASE authKW 140168 0% 100% 11
10 DOUBLE HETEROJUNCTION BIPOLAR TRANSISTOR DHBT authKW 135909 1% 67% 16

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 Engineering, Electrical & Electronic 37790 72% 0% 1726
2 Physics, Applied 15507 52% 0% 1236
3 Physics, Condensed Matter 2819 20% 0% 468
4 Nanoscience & Nanotechnology 237 4% 0% 104
5 Physics, Multidisciplinary 141 5% 0% 127
6 Telecommunications 41 2% 0% 42
7 Materials Science, Multidisciplinary 36 7% 0% 158
8 Materials Science, Coatings & Films 30 1% 0% 31
9 Crystallography 20 1% 0% 35
10 Optics 5 2% 0% 52

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 CSDL 59289 0% 42% 11
2 INP IC TEAM 50970 0% 100% 4
3 HIGH SPEED DEVICES GRP 25485 0% 100% 2
4 MICROWAVE PLICAT 20375 0% 20% 8
5 QNERC 16989 0% 67% 2
6 RF OEICS 16989 0% 67% 2
7 ULTRA HIGH SPEED COMMUN IC TEAM 16989 0% 67% 2
8 MICROELECT IXL 16985 0% 33% 4
9 NANOTECHNOL RD 15809 0% 21% 6
10 MILLIMETER WAVE ELECT GRP 13266 0% 21% 5

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 SOLID-STATE ELECTRONICS 115653 12% 3% 299
2 IEEE TRANSACTIONS ON ELECTRON DEVICES 108773 15% 2% 360
3 IEEE ELECTRON DEVICE LETTERS 105451 11% 3% 273
4 ELECTRONICS LETTERS 16287 9% 1% 225
5 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES 8206 4% 1% 91
6 IEEE MICROWAVE AND GUIDED WAVE LETTERS 6649 1% 3% 21
7 IEICE TRANSACTIONS ON ELECTRONICS 5236 2% 1% 50
8 SEMICONDUCTOR SCIENCE AND TECHNOLOGY 3459 2% 1% 47
9 INSTITUTE OF PHYSICS CONFERENCE SERIES 3450 2% 1% 52
10 MICROELECTRONICS RELIABILITY 2592 2% 1% 38

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 HETEROJUNCTION BIPOLAR TRANSISTORS 1226817 9% 44% 217 Search HETEROJUNCTION+BIPOLAR+TRANSISTORS Search HETEROJUNCTION+BIPOLAR+TRANSISTORS
2 HBT 634098 6% 33% 149 Search HBT Search HBT
3 HETEROJUNCTION BIPOLAR TRANSISTOR HBT 403685 4% 37% 85 Search HETEROJUNCTION+BIPOLAR+TRANSISTOR+HBT Search HETEROJUNCTION+BIPOLAR+TRANSISTOR+HBT
4 HETEROJUNCTION BIPOLAR TRANSISTORS HBTS 285451 2% 39% 57 Search HETEROJUNCTION+BIPOLAR+TRANSISTORS+HBTS Search HETEROJUNCTION+BIPOLAR+TRANSISTORS+HBTS
5 OFFSET VOLTAGE 229495 2% 49% 37 Search OFFSET+VOLTAGE Search OFFSET+VOLTAGE
6 POTENTIAL SPIKE 209088 1% 86% 19 Search POTENTIAL+SPIKE Search POTENTIAL+SPIKE
7 DHBT 205567 1% 73% 22 Search DHBT Search DHBT
8 DOUBLE HETEROJUNCTION BIPOLAR TRANSISTORS DHBTS 159276 1% 83% 15 Search DOUBLE+HETEROJUNCTION+BIPOLAR+TRANSISTORS+DHBTS Search DOUBLE+HETEROJUNCTION+BIPOLAR+TRANSISTORS+DHBTS
9 GRADED BASE 140168 0% 100% 11 Search GRADED+BASE Search GRADED+BASE
10 DOUBLE HETEROJUNCTION BIPOLAR TRANSISTOR DHBT 135909 1% 67% 16 Search DOUBLE+HETEROJUNCTION+BIPOLAR+TRANSISTOR+DHBT Search DOUBLE+HETEROJUNCTION+BIPOLAR+TRANSISTOR+DHBT

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 GUO, DF , YEN, CH , TSAI, JH , LOUR, WS , LIU, WC , (2007) INVESTIGATION OF AMPLIFYING AND SWITCHING CHARACTERISTICS IN DOUBLE HETEROSTRUCTURE-EMITTER BIPOLAR TRANSISTORS.JOURNAL OF THE ELECTROCHEMICAL SOCIETY. VOL. 154. ISSUE 4. P. H283 -H288 27 93% 0
2 ISHIBASHI, T , (2001) NONEQUILIBRIUM ELECTRON TRANSPORT IN HBTS.IEEE TRANSACTIONS ON ELECTRON DEVICES. VOL. 48. ISSUE 11. P. 2595 -2605 31 91% 33
3 CHEN, WH , CHEN, TP , LEE, CJ , HUNG, CW , CHU, KY , CHEN, LY , TSAI, TH , LIU, WC , (2008) COMPARATIVE STUDY ON TEMPERATURE-DEPENDENT CHARACTERISTICS OF INP/INGAAS SINGLE- AND DOUBLE-HETEROJUNCTION BIPOLAR TRANSISTORS.JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B. VOL. 26. ISSUE 2. P. 618 -623 24 100% 3
4 CHEN, TP , CHENG, SY , CHEN, WH , HUNG, CW , CHU, KY , CHEN, LY , TSAI, TH , LIU, WC , (2008) CHARACTERISTICS OF AN INP/INGAAS DOUBLE HETEROJUNCTION BIPOLAR TRANSISTOR WITH AN INALGAAS/INP COMPOSITE COLLECTOR STRUCTURE.JOURNAL OF THE ELECTROCHEMICAL SOCIETY. VOL. 155. ISSUE 2. P. H136 -H139 23 96% 0
5 CHEN, TP , LEE, CJ , CHEN, LY , TSAI, TH , LIU, YJ , HUANG, CC , CHEN, TY , CHENG, SY , LIU, WC , (2009) COMPARATIVE STUDY OF INGAP/GAAS HETEROJUNCTION BIPOLAR TRANSISTORS (HBTS) WITH DIFFERENT BASE SURFACE TREATMENTS.SUPERLATTICES AND MICROSTRUCTURES. VOL. 46. ISSUE 4. P. 715 -722 23 92% 1
6 OUDIR, A , MAHDOUANI, M , BOURGUIGA, R , PARDO, F , PELOUARD, JL , (2008) AN ANALYTIC PROCEDURE FOR EXTRACTION OF METALLIC COLLECTOR-UP INP/INGAASP/INGAAS HBT SMALL SIGNAL EQUIVALENT CIRCUIT PARAMETERS.SOLID-STATE ELECTRONICS. VOL. 52. ISSUE 11. P. 1742-1750 21 100% 6
7 OUDIR, A , MAHDOUANI, M , MANSOURI, S , BOURGUIGA, R , PARDO, F , PELOUARD, JL , (2010) SMALL-SIGNAL MODELING OF EMITTER-UP HBT USING AN IMPROVED ANALYTICAL APPROACH. APPLICATION TO INGAALAS/GAASSB/INP DHBT WITH STRAINED BASE.SOLID-STATE ELECTRONICS. VOL. 54. ISSUE 1. P. 67-78 20 100% 1
8 RUSSO, S , LA SPINA, L , D'ALESSANDRO, V , RINALDI, N , NANVER, LK , (2010) INFLUENCE OF LAYOUT DESIGN AND ON-WAFER HEATSPREADERS ON THE THERMAL BEHAVIOR OF FULLY-ISOLATED BIPOLAR TRANSISTORS: PART I - STATIC ANALYSIS.SOLID-STATE ELECTRONICS. VOL. 54. ISSUE 8. P. 745 -753 19 100% 1
9 CHEN, TP , LEE, CJ , LOUR, WS , GUO, DF , TSAI, JH , LIU, WC , (2009) ON THE BREAKDOWN BEHAVIORS OF INP/INGAAS BASED HETEROJUNCTION BIPOLAR TRANSISTORS (HBTS).SOLID-STATE ELECTRONICS. VOL. 53. ISSUE 2. P. 190-194 19 100% 6
10 LIN, YS , NG, SB , YU, WF , (2012) CURRENT GAIN AND OFFSET VOLTAGE IN AN INGAP/GAASSB/GAAS DOUBLE HETEROJUNCTION BIPOLAR TRANSISTOR.IEEE TRANSACTIONS ON ELECTRON DEVICES. VOL. 59. ISSUE 12. P. 3339-3343 25 71% 1

Classes with closest relation at Level 1


Rank Class id link
1 11678 CARBON DOPING//CBR4//INALAS ALLOYS
2 14880 SIGEHBT//A AMA MICROELECT SCI TECHNOL//MIXED MODE STRESS
3 34897 ALGAN GAN HBT//P INGAN//COMMON EMITTER
4 7303 BIPOLAR TRANSISTORS//IEEE TRANSACTIONS ON ELECTRON DEVICES//POLYSILICON EMITTER
5 18696 HETEROJUNCTION PHOTOTRANSISTOR//PHOTOTRANSISTOR//OPFET
6 15603 DECISION CIRCUITS//MODULATOR DRIVER//OPTICAL MODULATOR DRIVER
7 27197 GAASSB//INGAAS GAASSB//BILAYER QUANTUM WELL
8 28684 TRANSISTOR LASER//TRANSISTOR LASER TL//0 D QUANTUM WELLS
9 17551 BACKWARD DIODES//OPTOELECTRONIC SWITCH//MILLIMETER WAVE DETECTORS
10 6739 MHEMT//HEMT//PHEMT

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