SIMULTANEOUS PHASE AND AMPLITUDE CONTROL USING TRIPLE STUB TOPOLOGY AND ITS IMPLEMENTATION USING RF MEMS TECHNOLOGY
First Claim
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1. A reconfigurable phase shifting, amplitude, and impedance tuning circuit that is implemented using the triple stub topology, comprising:
- three or more stubs that are used as loading elements and have adjustable electrical lengths; and
two or more transmission lines/waveguides that connect the stubs and have adjustable electrical lengths; and
wherein phase shifting, amplitude control, and impedance tuning is obtained simultaneously.
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Abstract
This invention relates to techniques for controlling the amplitude and the insertion phase of an input signal in RF applications. More particularly, this invention relates to phase shifters, vector modulators, and attenuators employing both semi-conductor and RF microelectromechanical systems (MEMS) technologies.
17 Citations
6 Claims
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1. A reconfigurable phase shifting, amplitude, and impedance tuning circuit that is implemented using the triple stub topology, comprising:
- three or more stubs that are used as loading elements and have adjustable electrical lengths; and
two or more transmission lines/waveguides that connect the stubs and have adjustable electrical lengths; and
wherein phase shifting, amplitude control, and impedance tuning is obtained simultaneously. - View Dependent Claims (2, 3, 4, 5)
- three or more stubs that are used as loading elements and have adjustable electrical lengths; and
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6-153. -153. (canceled)
Specification