Abstract: An electrical connector includes a contact carrier receiving a plurality of contacts with solder balls, respectively. A socket frame has an opening formed by a number of sidewalls, the contact carrier is disposed in the opening and lower than the sidewalls. A bottom support has a thin board located below and supported the contact carrier and the socket frame, and an aperture is formed by the thin board to allow the solder balls passing through thereof. The thin board of the bottom support at least attaches with the socket frame.

Abstract: A communication method of coordinated multi-point transmission systems. Based on the Zadoff-Chu sequences, multiple training sequences are implemented, and the training sequences are a set of robust orthogonal training sequence (ROTS). Preamble signals that use the set of training sequences can be transmitted from multiple base stations/relay stations at the same time. In the case with the mixture signal of multiple preamble signals, user equipment can still use the received signal to estimate multiple carrier frequency offsets of the corresponding base stations/relay stations.

Abstract: An electrical interposer for connecting two electronic devices includes a plurality of first cores with undulating structure extending in a first direction and a plurality of second cores with undulating structure extending in a second direction angular with the first direction. Each first core has first peaks and first valleys alternately arranged in the first direction and each first peak is electrically connected with a corresponding neighboring first valley but insulated from others. Each second core has second peaks and second valleys alternately arranged in the second direction and each second peak is electrically connected with a corresponding neighboring second valley but insulated from others. The first cores and the second cores interlace with each other to reach a woven structure with the first peaks and the second peaks jointly constituting an upper interface, and the first valleys and the second valleys jointly constituting a lower interface.

Abstract: This invention utilizes atomic layer deposition (ALD) to deposit a layer of a material (e.g., aluminum oxide) as a passivation and adhesion enhancement layer on a piezoelectric layer and an interdigitated transducer(s) (IDT(s)) of a surface acoustic wave (SAW) filter and also utilizes a photosensitive polymer layer (e.g., epoxy dry film) for photodefining a cavity for SAW filter fabrication. The ALD layer serves to protect the IDTs from possible corrosion caused by either the polymer layer and/or moisture and at same time provide for stable operation of the SAW filter without a signal shift occurring by protection of the piezoelectric layer. The cavity, having walls formed by the photosensitive polymer, provides for a SAW fabrication process that is simple and cost effective.

Abstract: An electrical connector includes an insulative housing and a number of electrical contacts secured to the insulative housing. The insulative housing has a pair of opposite top surface and bottom surfaces. Each electrical contact includes a retaining section received in the insulative housing, a flat offset section bending from a top end of the retaining section and extending along the top surface of the insulative housing, a soldering section bending from a bottom end of the retaining section, and a cantilevered contact arm bending downwardly from the offset section and projecting into the insulative housing.

Abstract: An electrical connector includes an insulting housing defining a receiving room and an inserting opening through which the module is inserted in the receiving room in an inserting direction. A plurality of contacts are retained in the housing and each contact comprises an engaging portion extending in the receiving room. A pair of latching structures is located in front of the inserting opening to limit the module in the receiving room in the inserting direction of the module, the latching structures being urged to move downward to allow the module into the receiving room.

Abstract: An electrical connector for receiving a card includes an insulating housing, terminals and a metal frame attached to the housing. The housing includes a base having a terminal-location portion, a pair of sidewalls extending a first direction and a rear wall adjacent to the terminal-location portion. The terminals are arranged in the terminal-location portion along a second direction perpendicular to the first direction. The metal frame is attached to the housing and includes a base portion located above the terminal-location portion to define a receiving slot between the terminal-location portion and the base portion for receiving a mating end of the card, the base portion is not beyond the terminal-location portion in the first direction and the receiving. The metal frame further includes a pair of locking portions adapted for pressing against a top face of the card to lock the card in the insulating housing and moving outwards in the second direction to release the card.

Abstract: An electrical connector includes an insulative housing and a number of electrical contacts secured to the insulative housing. The insulative housing has a pair of opposite top surface and bottom surfaces. Each electrical contact includes a retaining section received in the insulative housing, a flat offset section bending from a top end of the retaining section and extending along the top surface of the insulative housing, a soldering section bending from a bottom end of the retaining section, and a cantilevered contact arm bending downwardly from the offset section and projecting into the insulative housing.

Abstract: An electrical connector for electrically connecting a module to a printed circuit board, comprises an insulative housing receiving the module, a plurality of contacts received in the insulative housing and a cover pivotally assembled to the insulative housing. The cover presses upon the module and extends beyond a rear end of the insulative housing to further limit or press a part of the module exposed outside the insulative housing. The electrical connector can reliably retain the module.

Abstract: A contact adapted for electrically connecting with an IC package and a printed circuit board, comprises a base portion adapted for being retained to an insulating housing, a solder portion extending from a lower end of the base portion and a turned portion bent downwardly from one end of the base portion. The solder portion is adapted for soldering the contact to the printed circuit board. The contact further includes a resilient arm extending upwardly from a bottom end of the turned portion. The resilient arm has an inclined portion and a cantilever beam. The inclined portion is connecting with the turned portion. The cantilever extends upwardly from a top end of the inclined portion and toward the turned portion to lengthen the resilient arm of the contact. Housing cavities may be formed to cause pre-loading of the resilient arms as they are inserted into the cavities.

Abstract: A socket connector (100) adapted for electrically connecting an integrated circuit (IC) package comprises an insulative housing (1) comprising a plurality of passageways (101) extending therethrough, a plurality of terminal units (2) received in the passageways (101), the terminal units (2) each comprises an insulated elastomer (21) acting as a resilient portion and an electrical element (22) received in the insulated elastomer (21), the electrical element (22) comprises a first contact portion (221) and a second contact portion (222) extending out of the insulated elastomer (21) and sandwiching the insulated elastomer (21) therebetween.

Abstract: A socket, for connecting an IC (integrated circuit) package to a printed circuit board, has an insulative housing and a plurality of contacts assembled to the insulative housing. The insulative housing defines a plurality of holes and a plurality of retaining slots. The contact is assembled to the insulative housing from the bottom to the top, and each contact has a horizontal main body, an oblique arm extending upwardly and forwardly from a front edge of the horizontal main body and received in the hole and a pair of retaining tabs extending upwardly from two opposite lateral edges of the horizontal main body, respectively, and interfering with the retaining slot of the insulative housing to retain the contact on the insulative housing.

Abstract: An electrical connector (100) for connecting an electronic module (8) with a printed circuit board includes an insulative housing (1) defining a receiving space (12), a number of contacts (2) received in the housing and a cover (3) attached to the housing. The housing forms a base (10) and a pair of lateral walls (11) extending from the base. Each lateral wall has an end portion (112) away from and opposite to the base. The cover is assembled to the end portions of the lateral walls of the housing and is capable of moving from an unlocking position to a locking position. The connector also has a pair of metal ears (5) retained in the housing and can be driven to move into the receiving space and abut against the electronic module when the connector is in the locking position.

Abstract: A socket connector (100) adapted for electrically connecting an integrated circuit (IC) package comprises an insulative housing (1) comprising a plurality of passageways (101) extending therethrough, a plurality of terminal units (2) received in the passageways (101), the terminal units (2) each comprises an insulated elastomer (21) acting as a resilient portion and an electrical element (22) received in the insulated elastomer (21), the electrical element (22) comprises a first contact portion (221) and a second contact portion (222) extending out of the insulated elastomer (21) and sandwiching the insulated elastomer (21) therebetween.

Abstract: A pick-up cap includes a main portion with a planar top surface and having a first end and a second end opposite to each other. At least two latches extend downwardly from the first and the second ends of the main portion, respectively. Each latch has a hook extending laterally from the latch, and the latch on the second end has a supporting portion extending downwardly and connecting with the hook for facilitative assembling and disassembling the pick-up cap from an insulative housing.

Abstract: An electrical connector (100) used to transmit electric and optical signal from a module to a circuit substrate comprises an insulative housing (1), a plurality of contacts (2) received in the insulative housing (1) and a cover (3) being assembled on the insulative housing (1) and can move between an opened position to a closed position, the insulative housing (1) comprises a bottom wall (141) and a plurality of sidewalls (142) extending upwardly from the bottom wall (141), each of the sidewalls (142) each defines a plurality of datum blocks (145) and the inner surface of the datum (145) on one sidewall (142) are located in one plane, the datum blocks (145) together formed a space (14) to receive the module.

Abstract: An electrical interposer for connecting two electronic devices includes a plurality of first cores with undulating structure extending in a first direction and a plurality of second cores with undulating structure extending in a second direction angular with the first direction. Each first core has first peaks and first valleys alternately arranged in the first direction and each first peak is electrically connected with a corresponding neighboring first valley but insulated from others. Each second core has second peaks and second valleys alternately arranged in the second direction and each second peak is electrically connected with a corresponding neighboring second valley but insulated from others. The first cores and the second cores interlace with each other to reach a woven structure with the first peaks and the second peaks jointly constituting an upper interface, and the first valleys and the second valleys jointly constituting a lower interface.

Abstract: An electrical connector (1) comprises an insulative housing (2), a plurality terminals received in the housing (2), a stiffener (3) engaged with the housing (2), a clip (5) and a lever (4) pivotably mounted on two opposite sides of the stiffener (3). The lever (4) comprises a pair of locating portions (424) pivotably received in the stiffener (3), an offset actuating portion (422) between the locating portions (424), and an operating portion (43) extending upward and frontward from an end of the locating portions (424) and bent far away from the housing (2).

Abstract: An electrical connector assembly (100) includes an insulative housing (1), a number of contacts (7) received in the insulative housing (1), a loading arrangement (3) covered the insulative housing (1), a pressing member (2) pressing the loading arrangement (3) and a fix member (4) pressing the pressing member (2) to securely locate the pressing member (2) on the insulative housing (1). The loading arrangement (3) defines a body plate (31) and a tab (32) extending from the body plate (31). The pressing member (2) defines a pressing portion (211) for pressing the tab (32) of the loading arrangement (3) and a stop portion (212) located on the insulative housing (1).