Proceedings ArticleDOI
Novel adaptive predistortion technique for cross coupled filters
Ming Yu,V. Dokas,Wai Cheung Tang,Richard J. Cameron +3 more
- Vol. 2, pp 929-932
TLDR
In this article, an adaptive predistortion technique for general cross-coupled microwave/RF filters with improved insertion loss and group delay equalization is presented, enabling many potential applications of an almost abandoned technique, especially using a lower Q design to emulate the performance of a higher Q filter.Abstract:
This paper presents a novel adaptive predistortion technique for general cross-coupled microwave/RF filters with improved insertion loss and group delay equalization. The method enables many potential applications of an almost abandoned technique, especially using a lower Q design to emulate the performance of a higher Q filter. A 10-4-4 coaxial filter was built to verify the validity of the new method. The technique should lead to practical applications such as satellite transponder input multiplexers.read more
Citations
More filters
Journal ArticleDOI
Predistortion technique for cross-coupled filters and its application to satellite communication systems
TL;DR: In this paper, an adaptive predistortion technique for general cross-coupled microwave/RF filters with improved insertion loss and group-delay equalization is presented, which enables many potential applications of an almost abandoned technique, and permits a lower Q implementation technology to emulate the performance of a higher Q filter.
Proceedings ArticleDOI
Generalized lossy microwave filter coupling matrix synthesis and design
Vahid Miraftab,Ming Yu +1 more
TL;DR: This paper introduces a systematic analytical technique to synthesize lossy reciprocal and non-symmetrical microwave filters and handles multiple complex couplings among resonators and finite-Q resonators.
Patent
Microwave filter with adaptive predistortion
TL;DR: In this paper, a method and apparatus for an adaptively predistortion filter which has a transfer function that satisfies performance criteria specified for at least one property of the filter is described.
Journal ArticleDOI
Tunable RF Filters Based on Liquid Crystal for Space Applications
TL;DR: In-orbit tunable bandpass filters employing liquid crystal material and operating at 20 GHz are reported on, especially on design aspects dealing with the harsh space environment, on the operating principles for commanding the filters on board the satellite, and on a qualification campaign passed successfully.
References
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Journal ArticleDOI
Full wave modeling of conducting posts in rectangular waveguides and its applications to slot coupled combline filters
TL;DR: In this article, a full wave model of conducting posts in rectangular waveguides yielding their generalized S-matrix is presented by cascading the generalized scattering matrices of the posts and waveguide discontinuities, slot couplings between two combline resonators are obtained.
Journal ArticleDOI
Predistortion Techniques for Multicoupled Resonator Filters (Short Papers)
TL;DR: In this article, a predistorted Iossy design technique is proposed for general, multicoupled, resonator networks to recover the Iossless passband flatness at the expense of insertion loss.
Patent
Microwave filter with adaptive predistortion
TL;DR: In this paper, a method and apparatus for an adaptively predistortion filter which has a transfer function that satisfies performance criteria specified for at least one property of the filter is described.
Proceedings ArticleDOI
Predistorted Waveguide Filters for Use in Communications Systems
TL;DR: In this paper, the authors proposed a method for correcting the effects of energy dissipation in filters, making their response conform to that of ideal filters, which is particularly noticeable in narrowband bandpass filters used in microwave communications.
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