Cargando…
VHF/UHF filters and multicouplers : applications of air resonators /
This book describes the various devices used in radio communication and broadcasting to achieve high selectivity filtering and coupling. After providing a background in the basics of microwave theory and more detailed material including a special chapter on precision and errors in measurement the re...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés Francés |
| Publicado: |
London, UK : Hoboken, NJ :
ISTE ; J. Wiley & Sons,
2010.
|
| Colección: | Iste.
|
| Temas: | |
| Acceso en línea: | Texto completo (Requiere registro previo con correo institucional) |
Tabla de Contenidos:
- Title Page; Dedication; Copyright; Preface; Introduction; Chapter 1: Reminders and General Points; 1.1. Lines; 1.1.1. Bifilar lines; 1.1.2. Coaxial lines; 1.2. Adaptation and stationary waves; 1.3. Smith chart; 1.4. Power in a line; 1.5. Line sections; 1.6. Lines with losses; Chapter 2: Measurements in HF; 2.1. Material; 2.2. The power bench; 2.2.1. The measurements to carry out; 2.2.2. Bench configuration; 2.3. Measurements on the network analyzer; 2.3.1. Measurement principles; 2.3.2. Measurement errors; 2.3.3. The measurement attenuator; Chapter 3: Resonant Cavities; 3.1. Resonance.
- 3.2. Coaxial cavities3.3. Quarter-wave cavities; 3.3.1. Excitation; 3.3.2. Possible shapes; 3.3.3. Lines of force; 3.3.4. Equivalence criterion; 3.3.5. Electric length; 3.3.6. Conditions for optimal Q0; 3.3.7. Refutation of the method; 3.3.8. Calculation of Q0; Chapter 4: Fabrication and Tuning of Cavities; 4.1. Standard structures; 4.1.1. Band-pass; 4.1.2. Reject; 4.1.3. Pass-reject; 4.2. Materials; 4.2.1. The thin metal sheet; 4.2.2. Extrusion; 4.3. Assembly; 4.4. Temperature stability; 4.4.1. Compensation for ambient temperature; 4.4.2. Compensation for internal heating.
- 4.4.3. Various remarks. Humidity effects4.5. Cavity tuning; 4.5.1. Insertion loss and selectivity; 4.5.2. Loop tuning; 4.5.3. Frequency tuning; Chapter 5: The Band-pass Filter; 5.1. The band-pass function; 5.2. Calculation of a Tchebycheff band-pass; 5.3. Technologies; 5.3.1. Planar circuits; 5.3.2. Ceramic filters; 5.3.3. Dielectric air filters; Chapter 6: The Combline Filter; 6.1. Architecture; 6.1.1. General structure; 6.1.2. Fastening the tubes; 6.1.3. Housing, tuning, stability in temperature; 6.2. Dimension calculations. Dishal's Method; 6.2.1. Parameterization.
- 6.2.2. The modified method6.3. Tuning of filters; 6.3.1. General rules; 6.3.2. Elliptization of the Tchebycheffs; 6.3.3. Mechanical model; 6.3.4. Abundances of the mechanical model; Chapter 7: Channel Multiplexing; 7.1. Definitions; 7.2. The duplexer; 7.2.1. The pass-reject duplexer; 7.2.2. The band-pass duplexer; Remark 1; Remark 2; 7.3. The combiner; 7.3.1. The nodal-point combiner; 7.3.2. The series combiner; 7.3.3. Harness adjustment; 7.3.4. Secondary harness; 7.3.5. Projected losses; 7.3.6. Optimal Q; Chapter 8: Auxiliary Devices; 8.1. Introduction; 8.2. Circulators.
- 8.2.1. Operating principle8.2.2. Usage; 8.2.3. Characterization; 8.3. The antenna alarms; 8.3.1. Detection alarm; 8.3.2. Thermal alarm; Remark; 8.4. Loads and attenuators; 8.4.1. Loads; 8.4.2. Reminders concerning the transmission of heat; 8.4.3. Attenuators; 8.5. Reception amplifiers; 8.5.1. Introduction; 1) Bipolar transistor (8.15a); 2) Field-effect transistor (8.15b); 8.5.2. Intercept point; 8.5.3. Noise factor; 8.6. The impedance adaptor; 8.7. The 2nd harmonic rejecter; Chapter 9: Directive Couplers; 9.1. Introduction; 9.2. Technologies; Figure 9.2a: microstrip coupler.