摘要:
A stacked microelectronic assembly includes a base substrate having conductive elements projecting from a bottom surface thereof and a first microelectronic subassembly underlying a bottom surface of the base substrate. The first microelectronic subassembly includes a first dielectric substrate, a first microelectronic element connected with the first dielectric substrate and first conductive posts projecting from the first dielectric substrate toward the bottom surface of the base substrate for electrically interconnecting the first microelectronic element and the base substrate. The assembly also has a second microelectronic subassembly overlying the base substrate. The second microelectronic subassembly includes a second dielectric substrate, a second microelectronic element connected with the second dielectric substrate and second conductive posts projecting toward the top surface of the base substrate for electrically interconnecting the second microelectronic element and the base substrate. The first microelectronic subassembly has a first height and the conductive elements projecting from the bottom surface of the base substrate have a second height that is greater than the first height of the first microelectronic subassembly.
摘要:
A stacked microelectronic assembly includes a base substrate having conductive elements projecting from a bottom surface thereof and a first microelectronic subassembly underlying a bottom surface of the base substrate. The first microelectronic subassembly includes a first dielectric substrate, a first microelectronic element connected with the first dielectric substrate and first conductive posts projecting from the first dielectric substrate toward the bottom surface of the base substrate for electrically interconnecting the first microelectronic element and the base substrate. The assembly also has a second microelectronic subassembly overlying the base substrate. The second microelectronic subassembly includes a second dielectric substrate, a second microelectronic element connected with the second dielectric substrate and second conductive posts projecting toward the top surface of the base substrate for electrically interconnecting the second microelectronic element and the base substrate. The first microelectronic subassembly has a first height and the conductive elements projecting from the bottom surface of the base substrate have a second height that is greater than the first height of the first microelectronic subassembly.
摘要:
A microelectronic package includes a microelectronic element having faces and contacts and a flexible substrate spaced from and overlying a first face of the microelectronic element. The package also includes a plurality of conductive posts extending from the flexible substrate and projecting away from the first face of the microelectronic element, wherein at least some of the conductive posts are electrically interconnected with the microelectronic element, and a plurality of support elements supporting the flexible substrate over the microelectronic element. The conductive posts are offset from the support elements to facilitate flexure of the substrate and movement of the posts relative to the microelectronic element.
摘要:
A microelectronic assembly includes a microelectronic package having a microelectronic element with faces and contacts, a flexible substrate spaced from and overlying a first face of the microelectronic element, and a plurality of conductive posts extending from the flexible substrate and projecting away from the first face of the microelectronic element, at least some of the conductive posts being electrically interconnected with the microelectronic element. The package includes a plurality of support elements disposed between the microelectronic element and the substrate and supporting the flexible substrate over the microelectronic element. At least some of the conductive posts are offset from the support elements. The assembly includes a circuitized substrate having conductive pads confronting the conductive posts of the microelectronic package, whereby the conductive posts are electrically interconnected with the conductive pads.
摘要:
An assembly is provided which includes a first circuit panel having a top surface, a first dielectric element and first conductive traces disposed on the first dielectric element. In addition, a second circuit panel has a bottom surface, a second dielectric element and second conductive traces disposed on the second dielectric element, where at least a portion of the second circuit panel overlies at least a portion of the first circuit panel. The assembly further includes an interconnect circuit panel having a third dielectric element which has a front surface, a rear surface opposite the front surface, a top end extending between the front and rear surfaces, a bottom end extending between the front and rear surfaces, and a plurality of interconnect traces disposed on the dielectric element. The bottom end of the interconnect element abuts the top surface of the first circuit panel and the top end abuts the bottom surface of the second circuit panel, where at least some of the first conductive traces are in conductive communication with the second conductive traces through the interconnect traces.
摘要:
Mediation sitting cushions and mats allow the user to meditate in comfort for great lengths of time, avoiding stress and pain often caused by traditional meditation cushions and mats. The layered mediation sitting cushions and mats combine a slow recovery visco-elastic foam (“VEF”), having load deformation properties and densities, with one or more base layers of a batting support. The sitting cushions and mats enable a person seated in traditional meditative positions to achieve a comfortable posture, regardless of the meditator's size or weight. The sitting cushions and mats also allow people to meditate in traditional cross-legged or kneeling postures comfortably, without irritation or pain. The mediation sitting cushions and mats also maintain of the pelvis in a neutral or slightly anterior position, resulting in proper alignment of the pelvis and spine, which minimizes the muscular and ligamentous strain caused by sitting in stillness for long periods of time.
摘要:
A transmission structure having high propagation velocity and a low effective dielectric loss. The structure comprises a dielectric, a first reference conductor disposed below the dielectric, a signal conductor disposed above the dielectric, and a second reference conductor disposed over the signal conductor. The second reference conductor has a recess portion facing the signal conductor, the recess portion defining a gap between the second reference conductor and the signal conductor. The gap may be filled with air which has a relative dielectric constant approximately equal to one (1). Because of the physical and dielectric constant characteristics of the gap, the structure concentrates an electric field in the gap resulting in an effective dielectric constant approximately (approaching) one (1) and an effective dielectric loss approximately equal to zero (0). Thus, the structure exhibits a propagation velocity approximately equal to the speed of light.
摘要:
An improved circuit for controlling the output power level of a radio frequency (RF) amplifier is disclosed. The circuit samples the output of an RF amplifier. The sample is amplitude modulated at a preselected modulation frequency and is passed to a detector. In repsonse to the amplitude modulated signal, the detector produces a signal whose amplitude is indicative of the RF amplifier's output power and whose frequency is the modulation frequency. The amplitude of the signal produced by the detector is then compared to a reference amplitude and the difference (error signal) is used to control the gain of the RF amplifier.
摘要:
An improved circuit for controlling the output power level of a radio frequency (RF) amplifier is disclosed. The circuit samples the output of an RF amplifier. The sample is amplitude modulated at a preselected modulation frequency and is passed to a detector. In response to the amplitude modulated signal, the detector produces a signal whose amplitude is indicative of the RF amplifier's output power and whose frequency is the modulation frequency. The amplitude of the signal produced by the detector is then compared to a reference amplitude and the difference (error signal) is used to control the gain of the RF amplifier.
摘要:
A vertically elongated, hollow and lightweight housing including top and bottom walls and a plurality of interconnected sidewall portions extending between and connecting the top and bottom walls is provided. At least one of the sidewall portions has indicia thereon indicating a winning bingo game situation and the bottom wall includes a central opening formed therein about which a depending tubular neck integral with the bottom wall is disposed. An elongated wand is also provided including upper and lower ends and a mid-length portion extending between and connecting the upper and lower ends. The wand is slidingly telescopingly received through the neck and the upper and lower ends are slightly diametrically enlarged in relation to the mid-length portion of the wand. The upper and lower ends are tightly slidingly receivable through the neck and the mid-length portion of the wand is freely slidable through the neck. The lower end of the wand includes a diametrical enlargement thereon of greater transverse dimension than the outside diameter of the neck and the length of the wand is such that the upper end face thereof abuts against the inner surface of the top wall of the housing when the enlargement is in close juxtaposition with the lower end of the neck.