Dual-mode microwave filter
|444 - Abstract:|
|The European Space Agency (ESA) is interested in finding a partner that would assist in industrialising an innovative dual-mode microwave filter for a waveguide to be used, for example, for applications in telecommunications satellites. Such filters are capable of providing filter transfer functions that are very complex and selective.|
Description of the offer:
This invention is a dual-mode microwave filter providing several advantages such as simple design, easy simulation of its electromagnetic waves and/or suitability for being manufactured by a method that is simple and low cost.
The invention is based on the idea of using a rectangular waveguide presenting only simple inductive discontinuities. Given that use is made only of inductive discontinuities in rectangular waveguides, analysis and optimization can be performed in a manner that is much more accurate and efficient than with conventional implementations based on circular waveguides. Even with complex multichannel multiplexers, design can be performed.
Another advantage is that the required filter structure is very simple and very suitable for high precision manufacture at low cost, thereby reducing the total cost of development and manufacture in a significant manner.
The invention thus provides a dual-mode microwave filter, comprising a rectangular resonator, operating in two distinct modes (m, 0, n) and (p, 0, q) from a single family of modes and presenting the same direction as the E field. Coupling and mode excitation discontinuities are inductive and in the same direction. Length and width are advantageously selected to have a ratio such that said two modes resonate at the same frequency.
Innovations and advantages of the offer:
The new family of dual-mode filters proposed by this invention relies on implementing pairs of modes from the same family of modes in a rectangular resonator.
With this concept, many choices are made available starting from the same basic characteristic.
Domain of Application:
- Microwave filters for Telecom
- High Precision Manufacturing and Surface Treatment of Waveguide
- Components for Ka band applications
- Commercial Communications
- Data Communications
- Satellite Microwave Communications
- Other Communications Related
Last update: 16 January 2013