The monograph presents issues related to the design of coupled line sections and microwave circuits using coupled line sections, which are used in modern microwave electronics.
W monografii przedstawione zostały zagadnienia związane z projektowaniem sekcji linii sprzężonych oraz układów mikrofalowych wykorzystujących sekcje linii sprzężonych, które znajdują zastosowanie we współczesnej elektronice mikrofalowej.
Wydawnictwa AGH nie prowadzą sprzedaż książek z serii "Rozprawy Monografie". Zainteresowanych prosimy o kontakt z ich Autorami.
- Spis treści
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Summary 7
Streszczenie 8
List of symbols 11
1. Introduction 13
2. Analysis of coupled transmission lines 19
2.1. Capacitance matrix of coupled lines 20
2.2. Even and Odd modes of symmetrical coupled lines 21
2.3. Four-port symmetrical network 23
2.4. Directional couplers 26
2.4.1. Forward-wave directional couplers 30
2.4.2. Backward-wave directional couplers 32
2.4.3. Asymmetric coupled lines 34
2.5. Summary 40
3. Improved FD method for numerical calculation of the coupled line parameters 41
3.1. FD method for coupled-line parameters calculation 42
3.2. Accelerating algorithm for FD method 46
3.3. Improved FD method with unequal mesh 49
3.4. Multiconductor coupled-line section analysis with the use of improved FD method and application examples 52
3.5. Summary 57
4. Design aspects of high-performance coupled-line circuits 58
4.1. Conditions of ideal coupled-line section realization 59
4.1.1. Analysis of influence of modal phase velocity inequality on directional coupler’s parameters 59
4.1.2. Influence of coupling coefficient inequality on directional coupler parameters 63
4.2. Coupled-line section compensation techniques 66
4.2.1. Compensation of coupling coefficients by the choice of dielectric layers 66
4.2.2. Compensation of coupling coefficients using capacitive and inductive elements 75
4.2.3. Compensation of coupling coefficients using corrugated ground plane 97
4.2.4. Wiggly line couplers 99
4.3. Parasitic reactances within coupled-line structures 101
4.3.1. Influence of parasitic reactances of the transition regions between coupled and signal lines 102
4.3.2. Influence of parasitic reactances of the transition regions between coupled-line sections 105
4.3.3. Compensation method of parasitic reactances 107
4.4. Summary 118
5. Directional couplers designed with the use of the developed techniques and their circuit applications 120
5.1. Single-section 3-dB directional coupler designed in symmetric stripline coupled lines 121
5.2. Single-section 3-dB directional coupler in microstrip multilayer technology 122
5.3. Broadband multisection, asymmetric 3-dB directional coupler 127
5.4. Broadband multisection, symmetrical 3-dB directional coupler 128
5.5. Broadband multisection, asymmetric 8.34 dB directional coupler 130
5.6. Three-section 3-dB, symmetrical directional coupler designed in multilayer microstrip technology 135
5.7. Suspended stripline directional coupler with equalized inductive and capacitive coupling coefficients 142
5.8. Low-loss, suspended stripline directional coupler with equalized inductive and capacitive coupling coefficients 143
5.9. Low-loss multisection suspended stripline directional coupler 146
5.10. Broadband high-performance coupled-line magic-T network for direction finding systems 150
5.11. Integrated stripline multibeam antenna array fed by a compact Butler matrix 155
5.12. Summary 158
6. Final remarks 160
Appendix I 162
Appendix II 166
References 174