摘要:
A microelectromechanical systems (MEMS) component 20 includes a portion 32 of a MEMS structure 30 formed on a semiconductor substrate 34 and a portion 36 of the structure 30 formed in a non-semiconductor substrate 22. The non-semiconductor substrate 22 is in fixed communication with the semiconductor substrate 34 with the portion 32 of the MEMS structure 30 being interposed between the substrates 34 and 22. A fabrication method 96 entails utilizing semiconductor thin-film processing techniques to form the portion 32 on the semiconductor substrate 34, and utilizing a lower cost processing technique to fabricate the portion 36 in the non-semiconductor substrate 22. The portions 32 and 36 are coupled to yield the MEMS structure 30, and the MEMS structure 30 can be attached to another substrate as needed for additional functionality.
摘要:
A microelectromechanical systems (MEMS) component 20 includes a portion 32 of a MEMS structure 30 formed on a semiconductor substrate 34 and a portion 36 of the structure 30 formed in a non-semiconductor substrate 22. The non-semiconductor substrate 22 is in fixed communication with the semiconductor substrate 34 with the portion 32 of the MEMS structure 30 being interposed between the substrates 34 and 22. A fabrication method 96 entails utilizing semiconductor thin-film processing techniques to form the portion 32 on the semiconductor substrate 34, and utilizing a lower cost processing technique to fabricate the portion 36 in the non-semiconductor substrate 22. The portions 32 and 36 are coupled to yield the MEMS structure 30, and the MEMS structure 30 can be attached to another substrate as needed for additional functionality.
摘要:
A MEMS capacitive device (90) includes a fixed capacitor plate (104) formed on a surface (102) of a substrate (100). A movable capacitor plate (114) is suspended above the fixed capacitor plate (104) by compliant members (116) anchored to the surface (102). A movable element (120) is positioned in spaced apart relationship from the movable capacitor plate (104) and has an actuator (130) formed thereon. Actuation of the actuator (130) causes abutment of a portion of the movable element (120) against a contact surface (136) of the movable plate (114). The abutment moves the movable plate (114) toward the fixed plate (104) to alter a capacitance (112) between the plates (104, 114). Another substrate (118) may be coupled to the substrate (100) such that a surface (126) of the substrate (118) faces the surface (102) of the substrate (100). The movable element (120) may be formed on the surface (126).
摘要:
A device 20 includes substrates 22 and 24 coupled to form a volume 32 between the substrates. A surface 28 of the substrate 22 faces a surface 30 of the substrate 24. A metal-insulator-metal capacitor 34 is formed on one of the surfaces 28 and 30. A conductive element 58 spans between a top electrode 56 of the capacitor 34 and the other surface 28 and 30. Vias 64 and 66 extend through the substrate 22 and are electrically interconnected with the conductive element 58 and a bottom electrode 52 of the capacitor 34. Another device 72 includes an underpass transmission line 92 formed on a surface 80 of a substrate 74 within a volume 84 formed between the substrate 74 and another substrate 76. The line 92 underlies an integrated device 96 formed on a surface 78 of the substrate 74.
摘要:
Methods and apparatus are provided to enable a transceiver (200) or transmitter including a single PA line-up (210) to transmit signals having frequencies in two or more different frequency bands, and/or having two or more different modulation types, and/or having two or more different RF power levels. The single PA line-up includes at least one variable matching circuit (216) and a variable harmonic filter (240) to tune match and tune filter communication signals prior to transmission. The variable matching circuit and the variable harmonic filter each include at least one variable capacitive element (2160 and 2400) that switches ON/OFF depending on whether a low frequency signal or a high frequency signal is being transmitted. Each variable capacitive element includes separate direct current and radio frequency terminals to enable the single PA line-up to change signal modulation and/or RF power levels in addition to frequencies.
摘要:
An impedance matching network is integrated on a first die and coupled to a second die, with the first and second dies mounted on a conductive back plate. The impedance matching network comprises a first inductor bridging between the first and second dies, a second inductor coupled to the first inductor and disposed on the first die, and a metal-insulator-metal (MIM) capacitor disposed on the first die. The MIM capacitor has a first metal layer coupled to the second inductor, and a second metal layer grounded to the conductive back plate. A method for manufacturing the integrated impedance matching network comprises the steps of forming an inductor on a die, forming a capacitor on the die, coupling the capacitor to the inductor, coupling the die bottom surface and the capacitor to a conductive plate, and coupling the inductor to another inductor that bridges between the die and another die.
摘要:
An impedance matching network is integrated on a first die and coupled to a second die, with the first and second dies mounted on a conductive back plate. The impedance matching network comprises a first inductor bridging between the first and second dies, a second inductor coupled to the first inductor and disposed on the first die, and a metal-insulator-metal (MIM) capacitor disposed on the first die. The MIM capacitor has a first metal layer coupled to the second inductor, and a second metal layer grounded to the conductive back plate. A method for manufacturing the integrated impedance matching network comprises the steps of forming an inductor on a die, forming a capacitor on the die, coupling the capacitor to the inductor, coupling the die bottom surface and the capacitor to a conductive plate, and coupling the inductor to another inductor that bridges between the die and another die.
摘要:
A MEMS capacitive device (90) includes a fixed capacitor plate (104) formed on a surface (102) of a substrate (100). A movable capacitor plate (114) is suspended above the fixed capacitor plate (104) by compliant members (116) anchored to the surface (102). A movable element (120) is positioned in spaced apart relationship from the movable capacitor plate (104) and has an actuator (130) formed thereon. Actuation of the actuator (130) causes abutment of a portion of the movable element (120) against a contact surface (136) of the movable plate (114). The abutment moves the movable plate (114) toward the fixed plate (104) to alter a capacitance (112) between the plates (104, 114). Another substrate (118) may be coupled to the substrate (100) such that a surface (126) of the substrate (118) faces the surface (102) of the substrate (100). The movable element (120) may be formed on the surface (126).
摘要:
A device 20 includes substrates 22 and 24 coupled to form a volume 32 between the substrates. A surface 28 of the substrate 22 faces a surface 30 of the substrate 24. A metal-insulator-metal capacitor 34 is formed on one of the surfaces 28 and 30. A conductive element 58 spans between a top electrode 56 of the capacitor 34 and the other surface 28 and 30. Vias 64 and 66 extend through the substrate 22 and are electrically interconnected with the conductive element 58 and a bottom electrode 52 of the capacitor 34. Another device 72 includes an underpass transmission line 92 formed on a surface 80 of a substrate 74 within a volume 84 formed between the substrate 74 and another substrate 76. The line 92 underlies an integrated device 96 formed on a surface 78 of the substrate 74.
摘要:
Methods and apparatus are provided to enable a transceiver (200) or transmitter including a single PA line-up (210) to transmit signals having frequencies in two or more different frequency bands, and/or having two or more different modulation types, and/or having two or more different RF power levels. The single PA line-up includes at least one variable matching circuit (216) and a variable harmonic filter (240) to tune match and tune filter communication signals prior to transmission. The variable matching circuit and the variable harmonic filter each include at least one variable capacitive element (2160 and 2400) that switches ON/OFF depending on whether a low frequency signal or a high frequency signal is being transmitted. Each variable capacitive element includes separate direct current and radio frequency terminals to enable the single PA line-up to change signal modulation and/or RF power levels in addition to frequencies.