Planning the Design of RF Filters
Designing RF filters that just satisfies customer specified requirements is termed as functional design of filters. Functional design is the core design task but it alone is not adequate in industrial environment. Filters should be designed for repeatabil
- PDF / 276,166 Bytes
- 12 Pages / 439.37 x 666.142 pts Page_size
- 63 Downloads / 195 Views
Planning the Design of RF Filters
Abstract Designing RF filters that just satisfies customer specified requirements is termed as functional design of filters. Functional design is the core design task but it alone is not adequate in industrial environment. Filters should be designed for repeatability, reproducibility, producibility and reliability in addition to complying with functional design requirements. Such a design is termed as value added functional design. The benefits of value added design, the technical activities for realising value added functional design and the methods of integrating the four abilities with functional design are explained in detail with practical examples.
5.1 Need for Planning Design The design and development of RF filters should ensure that the specified requirements (electrical, mechanical and environmental) of customer are satisfactorily met and compliance to the requirements is demonstrated to the customer. Such a design which just satisfies customer specified requirements is termed as functional design of filters. Functional design of a filter is definitely the core design task but it alone is not adequate. The inadequate functional design is shown in Fig. 5.1. RF filters should be designed for repeatability, reproducibility, producibility and reliability requirements in addition to complying with functional design requirements. Simple explanations could be given for the four abilities. 1. Repeatability refers to verifying the compliance of electrical performance of filters for many (five or more) times by one operator. 2. Reproducibility refers to verifying the compliance of electrical performance of filters by many (five or more) operators. 3. Produceability refers to the ease of manufacturing the filters. D. Natarajan, A Practical Design of Lumped, Semi-Lumped and Microwave Cavity Filters, Lecture Notes in Electrical Engineering, DOI: 10.1007/978-3-642-32861-9_5, Ó Springer-Verlag Berlin Heidelberg 2013
55
56
5
Planning the Design of RF Filters
Fig. 5.1 Functional design of RF filter
Fig. 5.2 Value added functional design of RF filter
4. Reliability refers to satisfactory performance during the life of equipments in which the filters are used. The four abilities add values to functional design and the value added design concept is shown in Fig. 5.2.
5.1.1 Benefits of Value Added Functional Design The four abilities definitely add business values to the functional design of RF filters and the value added are: 1. Repeatability and reproducibility ensure acceptance of filters during manufacturing and incoming inspection at customer premises, providing in-house and customer confidence.
5.1 Need for Planning Design Table 5.1 Suggested activities for the design of RF filters
57 Sl. No.
Design and development activities
1 2 3 4 5 6 7
Understanding customer requirements Setting internal specifications Computations of filter parameters Design drawings and their review Organising samples of RF filters Internal testing of filters and validation by customer Release of
Data Loading...
