Class information for:
Level 1: BRANCH LINE COUPLER//RAT RACE COUPLER//BUTLER MATRIX

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
10906 1026 13.8 57%


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
10 4 OPTICS//PHYSICS, PARTICLES & FIELDS//PHYSICS, MULTIDISCIPLINARY 1131262
42 3       IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION//MICROWAVE AND OPTICAL TECHNOLOGY LETTERS//ENGINEERING, ELECTRICAL & ELECTRONIC 97664
131 2             IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES//IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS//MICROWAVE AND OPTICAL TECHNOLOGY LETTERS 23908
10906 1                   BRANCH LINE COUPLER//RAT RACE COUPLER//BUTLER MATRIX 1026

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 BRANCH LINE COUPLER authKW 2086932 9% 75% 94
2 RAT RACE COUPLER authKW 1078933 4% 84% 43
3 BUTLER MATRIX authKW 1000224 5% 61% 55
4 DIRECTIONAL COUPLER authKW 524208 9% 18% 97
5 QUADRATURE HYBRID authKW 277751 1% 67% 14
6 RAT RACE authKW 239487 1% 62% 13
7 MICROSTRIP COUPLER authKW 200045 1% 61% 11
8 COUPLED LINE COUPLER authKW 198393 1% 67% 10
9 BUTLER MATRICES authKW 182278 1% 88% 7
10 COUPLED STRIP TRANSMISSION LINES authKW 178560 1% 100% 6

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 28638 95% 0% 973
2 Telecommunications 3775 16% 0% 169
3 Optics 2508 21% 0% 220
4 Computer Science, Interdisciplinary Applications 60 3% 0% 28
5 Engineering, Manufacturing 40 1% 0% 14
6 Physics, Applied 18 6% 0% 62
7 Engineering, Aerospace 3 0% 0% 5
8 Transportation Science & Technology 0 0% 0% 2
9 Engineering, General -0 0% 0% 5
10 Automation & Control Systems -0 0% 0% 3

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 ELECT ENGN AUTOMAT INFORMAT TECHNOL ELECT 89280 0% 100% 3
2 ENGN OPTIMIZAT MODELING 48337 1% 13% 13
3 TELECOMMUN TELEINFORMAT ACOUST 47786 1% 11% 14
4 ELE OMAGNET COMPATIBIL INTEGRATED CIRCUIT C 39679 0% 67% 2
5 T RD 39679 0% 67% 2
6 WCC 38632 1% 13% 10
7 AD TAT COMMUN S 29760 0% 100% 1
8 ADV MIL COMMUN SYST GRP 29760 0% 100% 1
9 ADV SENSORS ELECT DEF ASED 29760 0% 100% 1
10 ANTENNA PROPAGAT MICROWAVE GRP AMRG 29760 0% 100% 1

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 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES 116116 22% 2% 222
2 MICROWAVE AND OPTICAL TECHNOLOGY LETTERS 85088 20% 1% 205
3 IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS 84817 10% 3% 104
4 IET MICROWAVES ANTENNAS & PROPAGATION 24661 4% 2% 41
5 INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING 13788 2% 2% 24
6 ELECTRONICS LETTERS 8954 11% 0% 109
7 JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS 6327 3% 1% 29
8 IEEE MICROWAVE AND GUIDED WAVE LETTERS 5078 1% 1% 12
9 IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY 4332 1% 1% 14
10 MICROWAVE JOURNAL 3285 1% 1% 14

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 BRANCH LINE COUPLER 2086932 9% 75% 94 Search BRANCH+LINE+COUPLER Search BRANCH+LINE+COUPLER
2 RAT RACE COUPLER 1078933 4% 84% 43 Search RAT+RACE+COUPLER Search RAT+RACE+COUPLER
3 BUTLER MATRIX 1000224 5% 61% 55 Search BUTLER+MATRIX Search BUTLER+MATRIX
4 DIRECTIONAL COUPLER 524208 9% 18% 97 Search DIRECTIONAL+COUPLER Search DIRECTIONAL+COUPLER
5 QUADRATURE HYBRID 277751 1% 67% 14 Search QUADRATURE+HYBRID Search QUADRATURE+HYBRID
6 RAT RACE 239487 1% 62% 13 Search RAT+RACE Search RAT+RACE
7 MICROSTRIP COUPLER 200045 1% 61% 11 Search MICROSTRIP+COUPLER Search MICROSTRIP+COUPLER
8 COUPLED LINE COUPLER 198393 1% 67% 10 Search COUPLED+LINE+COUPLER Search COUPLED+LINE+COUPLER
9 BUTLER MATRICES 182278 1% 88% 7 Search BUTLER+MATRICES Search BUTLER+MATRICES
10 COUPLED STRIP TRANSMISSION LINES 178560 1% 100% 6 Search COUPLED+STRIP+TRANSMISSION+LINES Search COUPLED+STRIP+TRANSMISSION+LINES

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 AHN, HR , NAM, S , (2013) COMPACT MICROSTRIP 3-DB COUPLED-LINE RING AND BRANCH-LINE HYBRIDS WITH NEW SYMMETRIC EQUIVALENT CIRCUITS.IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. VOL. 61. ISSUE 3. P. 1067 -1078 40 89% 15
2 NAPIJALO, V , (2012) COUPLED LINE 180 DEGREES HYBRIDS WITH LANGE COUPLERS.IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. VOL. 60. ISSUE 12. P. 3674-3682 26 100% 7
3 KURGAN, P , FILIPCEWICZ, J , KITLINSKI, M , (2012) DESIGN CONSIDERATIONS FOR COMPACT MICROSTRIP RESONANT CELLS DEDICATED TO EFFICIENT BRANCH-LINE MINIATURIZATION.MICROWAVE AND OPTICAL TECHNOLOGY LETTERS. VOL. 54. ISSUE 8. P. 1949-1954 25 100% 8
4 CHI, PL , HO, KL , (2014) DESIGN OF DUAL-BAND COUPLER WITH ARBITRARY POWER DIVISION RATIOS AND PHASE DIFFERENCES.IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. VOL. 62. ISSUE 12. P. 2965 -2974 24 92% 6
5 KURGAN, P , KOZIEL, S , (2016) FAST SURROGATE-ASSISTED SIMULATION-DRIVEN OPTIMIZATION OF COMPACT MICROWAVE HYBRID COUPLERS.ENGINEERING OPTIMIZATION. VOL. 48. ISSUE 7. P. 1109 -1120 24 92% 0
6 LIU, HM , FANG, SJ , WANG, ZB , FU, SQ , (2014) NOVEL COUPLED LINE 180 DEGREES HYBRID WITH NON-INTERSPERSED INPUT AND OUTPUT PORTS.IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. VOL. 62. ISSUE 11. P. 2641 -2649 23 100% 0
7 MAKTOOMI, MA , HASHMI, MS , GHANNOUCHI, FM , (2016) SYSTEMATIC DESIGN TECHNIQUE FOR DUAL-BAND BRANCH-LINE COUPLER USING T- AND PI-NETWORKS AND THEIR APPLICATION IN NOVEL WIDEBAND-RATIO CROSSOVER.IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY. VOL. 6. ISSUE 5. P. 784 -795 28 78% 0
8 KOZIEL, S , KURGAN, P , (2015) RAPID DESIGN OF MINIATURISED BRANCH-LINE COUPLERS THROUGH CONCURRENT CELL OPTIMISATION AND SURROGATE-ASSISTED FINE-TUNING.IET MICROWAVES ANTENNAS & PROPAGATION. VOL. 9. ISSUE 9. P. 957 -963 26 84% 0
9 BEKASIEWICZ, A , KURGAN, P , (2014) A COMPACT MICROSTRIP RAT-RACE COUPLER CONSTITUTED BY NONUNIFORM TRANSMISSION LINES.MICROWAVE AND OPTICAL TECHNOLOGY LETTERS. VOL. 56. ISSUE 4. P. 970-974 21 88% 19
10 KURGAN, P , KITLINSKI, M , (2011) DOUBLY MINIATURIZED RAT-RACE HYBRID COUPLER.MICROWAVE AND OPTICAL TECHNOLOGY LETTERS. VOL. 53. ISSUE 6. P. 1242 -1244 21 100% 9

Classes with closest relation at Level 1


Rank Class id link
1 11306 POWER DIVIDER//WILKINSON POWER DIVIDER//POWER COMBINER
2 17661 BALUN//MARCHAND BALUN//SUBHARMONIC MIXER
3 10805 DEFECTED GROUND STRUCTURE DGS//LOW PASS FILTER//DEFECTED GROUND STRUCTURE
4 10699 PHASE SHIFTER//T R SWITCH//TRANSMIT RECEIVE T R SWITCH
5 24282 RETRODIRECTIVE ARRAY//ROTMAN LENS//RETRODIRECTIVITY
6 5521 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES//SYNTHESIS FORMULAS//CYLINDRICAL MICROSTRIP LINE
7 19457 SIX PORT//SIX PORT REFLECTOMETER//SIX PORT RECEIVER
8 15683 SIMULAT OPTIMIZAT SYST//SPACE MAPPING//ENGN OPTIMIZAT MODELING
9 627 BANDPASS FILTER//BANDPASS FILTER BPF//TRANSMISSION ZERO
10 17272 VIVALDI ANTENNA//TAPERED SLOT ANTENNA//TAPERED SLOT ANTENNA TSA

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