Title:
ACTIVE HYBRIDS FOR ANTENNA SYSTEMS
Document Type and Number:
WIPO Patent Application WO/2010/120768
Kind Code:
A3
Abstract:
In an exemplary embodiment, a fully monolithic active hybrid architecture can be configured to replace a ring hybrid, magic tee, branchline coupler, or 180 hybrid by providing similar functionality in an integrated monolithic solution. Exemplary embodiments of the active hybrids combine active implementations of power splitters, power combiners, and phase shifting elements in a novel fashion allowing for ultra-compact size and broadband performance. In an exemplary embodiment, the active hybrid replaces the typical hybrid couplers with active splitters and active combiners. Similarly, the delay lines and amplitude adjustment elements are replaced by active vector generators. Vector generators are magnitude and phase control circuits. The active hybrid results in certain advantages including being size independent of the operating frequency, wide frequency range of operation, and RF signals undergo a neutral or slight positive power gain, rather than power losses that occur in the passive prior art systems.
Inventors:
CORMAN DAVID W (US)
Application Number:
PCT/US2010/030877
Publication Date:
January 13, 2011
Filing Date:
April 13, 2010
Export Citation:
Assignee:
VIASAT INC (US)
CORMAN DAVID W (US)
CORMAN DAVID W (US)
International Classes:
H01Q23/00; H01Q3/26
Foreign References:
| US4896374A | 1990-01-23 |
Other References:
TOKUMITSU, TSUNEO ET AL.: "Active isolator, combiner, divider, and magic-T as miniaturized function blocks", 10TH ANNUAL IEEE GALLIUM ARSENIDE INTEGRATED CIRCUIT SYMPOSIUM 1988, 6 November 1988 (1988-11-06) - 9 November 1988 (1988-11-09), NASHVILLE, TN USA, pages 273 - 276
FERRERO, F. ET AL.: "Compact quasi-lumped hybrid coupler tunable over large frequency band", IET ELECTRONICS LETTERS, vol. 43, no. 19, 13 September 2007 (2007-09-13), pages 1030 - 1031
LEE, CHENG-JUNG ET AL.: "Broadband Quadrature Hybrid Design Using Metamaterial Transmission Line and Its Application in the Broadband Continuous Phase Shifter", IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM 2007, 3 June 2007 (2007-06-03) - 8 June 2007 (2007-06-08), HONOLULU, HI USA, pages 1745 - 1748
FERRERO, F. ET AL.: "Compact quasi-lumped hybrid coupler tunable over large frequency band", IET ELECTRONICS LETTERS, vol. 43, no. 19, 13 September 2007 (2007-09-13), pages 1030 - 1031
LEE, CHENG-JUNG ET AL.: "Broadband Quadrature Hybrid Design Using Metamaterial Transmission Line and Its Application in the Broadband Continuous Phase Shifter", IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM 2007, 3 June 2007 (2007-06-03) - 8 June 2007 (2007-06-08), HONOLULU, HI USA, pages 1745 - 1748
Attorney, Agent or Firm:
PLATT, John H. (One Arizona Center400 East Van Buren Stree, Phoenix Arizona, US)
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