摘要:
A conductive bond for through-wafer interconnect is produced by forming an electrode through a first wafer from a component on a front side of the first wafer to a back side of the first wafer, forming a first electrically conductive interface in contact with an exposed portion of the electrode on the back side of the first wafer, and conductively bonding the first electrically conductive interface with a second electrically conductive interface on a second wafer under pressure at a temperature below the thermal budget of the stacked wafer device. The process temperature is generally well below the melting points of the electrically conductive interfaces. In some embodiments, the conductive bonding may be facilitated or enabled by performing the conductive bonding in a vacuum.
摘要:
A diversity receiver switch includes at least one second stage switch configured to communicate with a transceiver. The diversity receiver switch may also include at least one first stage switch coupled between a diversity receiver antenna and the second stage switch(es). The first stage switch(es) may be configured to handle a different amount of power than the second stage switch(es). The diversity receiver switch may include a bank of second stage switches configured to communicate with a transceiver. A first stage switch may be configured to handle more power than each switch in the bank of second stage switches. Alternatively, the diversity receiver switch include a bank of first stage switches coupled between the diversity receiver antenna and a second stage switch. The second stage switch may be configured to handle more power than each of the first stage switches.
摘要:
Methods and apparatus for metal semiconductor wafer bonding for high-Q devices are provided. An exemplary capacitor includes a first plate formed on a glass substrate, a second plate, and a dielectric layer. No organic bonding agent is used between the first plate and the glass substrate, and the dielectric layer can be an intrinsic semiconductor. A extrinsic semiconductor layer that is heavily doped contacts the dielectric layer. The dielectric and extrinsic semiconductor layers are sandwiched between the first and second plates. An intermetallic layer is formed between the first plate and the dielectric layer. The intermetallic layer is thermo compression bonded to the first plate and the dielectric layer. The capacitor can be coupled in a circuit as a high-Q capacitor and/or a varactor, and can be integrated with a mobile device.
摘要:
A diversity receiver switch includes at least one second stage switch configured to communicate with a transceiver. The diversity receiver switch may also include at least one first stage switch coupled between a diversity receiver antenna and the second stage switch(es). The first stage switch(es) may be configured to handle a different amount of power than the second stage switch(es). The diversity receiver switch may include a bank of second stage switches configured to communicate with a transceiver. A first stage switch may be configured to handle more power than each switch in the bank of second stage switches. Alternatively, the diversity receiver switch include a bank of first stage switches coupled between the diversity receiver antenna and a second stage switch. The second stage switch may be configured to handle more power than each of the first stage switches.
摘要:
An impedance matching circuit is disclosed. The impedance matching circuit includes two or more mutually coupled inductors. A total self inductance of the impedance matching circuit is less than a corresponding impedance matching circuit that includes inductors that are not mutually coupled. The two or more mutually coupled inductors may have known current ratios that match current ratios in the corresponding impedance matching circuit.
摘要:
A chipset includes a sheet of glass, quartz or sapphire and a first wafer having at least one first circuit layer on a first side of a first substrate layer. The first wafer is connected to the sheet such that the at least one first circuit layer is located between the first substrate layer and the sheet. A second wafer having at least one second circuit layer on a first side of a second substrate layer is connected to the first substrate layer such that the at least one second circuit layer is located between the second substrate layer and the first substrate layer. Also a method of forming a chipset.
摘要:
A method and apparatus for a piezoelectric resonator having combined thickness and width vibrational modes are disclosed. A piezoelectric resonator may include a piezoelectric substrate and a first electrode coupled to a first surface of the piezoelectric substrate. The piezoelectric resonator may further include a second electrode coupled to a second surface of the piezoelectric substrate, where the first surface and the second surface are substantially parallel and define a thickness dimension of the piezoelectric substrate. Furthermore, the thickness dimension and the width dimension of the piezoelectric substrate are configured to produce a resonance from a coherent combination of a thickness vibrational mode and a width vibrational mode when an excitation signal is applied to the electrodes.
摘要:
This disclosure provides implementations of electromechanical systems resonator structures, devices, apparatus, systems, and related processes. A resonator structure generally includes a first conductive layer with an input electrode, an output electrode, and a ground electrode. The ground electrode is disposed between the input electrode and the output electrode. In some implementations, the second conductive layer includes an input electrode, an output electrode, and a ground electrode. In some other implementations, a second conductive layer includes a pair of ground electrodes and a signal electrode in the form of an input or output electrode disposed between the ground electrodes. A piezoelectric layer is disposed between the first conductive layer and the second conductive layer. Sub-resonators can be defined in different regions of the structure, such that the piezoelectric layer is capable of moving to produce an output signal having frequencies at a first resonant frequency and a second resonant frequency.
摘要:
Bridge structures provide a surface on which to form interconnections to components through through-hole vias. The bridge structures at least partially, and preferably fully, span the gap between two wafers, and, more specifically, between a through-hole via in one wafer and a corresponding component on the other wafer. Bridge structure may be formed on the wafer having the through-hole via and/or the wafer having the component.
摘要:
A method of forming a MEMS device includes providing a first wafer having a MEMS structure in a first area and a second wafer having a second area, applying a metal nanoparticle material between the first wafer and the second wafer, and bonding a portion of the first wafer to a portion of the second wafer with the metal nanoparticle material so as to form a sealed area in the first area and the second area.