Abstract: A circuit assembly (1) and electronic device (30) having a printed circuit board (2), with conductive runners (3) and a ground plane (4). There is electronic circuitry (5) mounted to the circuit board (2) and electrically coupled to the runners (3). The circuit assembly (1) also has a Liquid Crystal Display (6) electrically coupled to the electronic circuitry (5), and a monopole element (7) is mounted on a surface of the Liquid Crystal Display (6) by a dielectric mount (10) that is proximal to an edge (11) of the printed circuit board (2).

Abstract: A battery cover assembly includes a battery cover (3) defining a pair of guide rails (326) therein, a connecting member (2), a housing (1) defining a receiving slot (164) and a battery-receiving compartment (194), a plurality of springs (5, 7), a plurality of sheaths (6), and an antenna rod (4). The connecting member is engaged with the sheaths and is loosely received in the guide rails along a lateral direction. The antenna rod inserts into the receiving slot through the connecting member, the sheaths, and the springs such that the battery cover can rotate about the antenna rod. When the battery cover is rotated downwardly to the housing, a force is required to press the battery cover down upon the housing, and then inwardly along a direction toward the antenna rod until locking projections (302) on the cover catch in troughs (182) defined in the housing.

Abstract: An electronic device includes a display and a keyboard having a fixed part and a movable part. The movable part moves between an open position and a closed position. The size of the electronic device remains unchanged when the movable part is in the open and closed positions. The movable part covers a portion of the display in the open position, and has back keys which cover the display portion and are inaccessible by the user. In the closed position, the entire display is exposed, and front keys of the movable part are inaccessible and cover keys of the fixed part.

Abstract: A clock radio includes a clock a user interface that is dynamically configurable from a remote computer. Once configured, the user interface allows a user to select radio programs that are accessible by the remote computer. When a user selects a radio program via the interface, a signal indicating the selected radio program is transmitted from the clock radio to the remote computer. The remote computer then accesses the selected radio program and transmits the selected radio program to speaker(s) for broadcast.

Abstract: In accordance with one aspect of the invention, a folding section of a mobile communication device comprises: an upper cover; a lower cover rotatably connected to a main body and engaged with the upper cover; an engaging portion formed between the upper cover and the lower cover for connecting the upper and lower covers, wherein the engaging portion comprises: a hook part protruding from the inner surface of the upper cover; and a hook engaging part formed at the lower cover facing the upper cover for engaging the hook parts; and a cap inserted into the hook engaging part so as to prevent the hook part from releasing from the hook engaging part.

Abstract: An electronic equipment system includes a housing 20 and a plurality of modules 31 to 35, which are removably built in and fixed to the housing 20. The modules 31 to 34 includes a liquid crystal display 31a; a graphic control circuit 32a1 and a navigation control circuit 32a2; an MD unit 33a; and a CD unit 34a, respectively. The module 35 is formed through integration of control sections, such as constant-voltage circuits for power supply, which achieve a function that is common among the graphic control circuit and the navigation control circuit, the MD unit, and the CD unit. Thus, it becomes possible to replace only necessary one among the modules 31 to 34, thereby reducing cost necessary for upgrading of the system.

Abstract: A foldaway electronic device includes a base unit having opposing lateral surfaces and an end portion, a cover unit having opposing lateral surfaces, each of which corresponds to one of the lateral surfaces of the base unit, and an end portion that is rotatably attached to the end portion of the base unit, whereby the cover unit may be rotated between a folded position relative to the base unit and an unfolded position relative to the base unit, a locking mechanism in the base unit and cover unit that locks the cover unit in the folded position, a lock release mechanism in the base unit that releases the locking mechanism when the cover unit is in the folded position, and impelling means in the base unit for impelling the cover unit from the folded position to an unfolded position after the lock release mechanism has been actuated, wherein either lateral surface of the base unit has a guard portion that extends over and prevents contact by a user's thumb and fingers with a portion of the corresponding lateral

Abstract: A folder type mobile communication terminal includes a first housing and a second housing hingedly connected to the first housing. The second housing includes a second knuckle on the rotation axis where the second knuckle defines an opening hole inside thereof for insertion of a connection cable, a second hinge aperture formed in the axial direction of the rotation axis to allow the connection cable to insert therethrough, a projecting part at one end, and a structure at the opposite end which allows installation of a hinge spring assembly. The first housing includes first knuckles formed at both ends, where the first knuckles define a first hinge aperture that is directed to the direction of the second hinge aperture, and a first slot formed in the bottom of one of the first knuckles to enable the connection cable to insert therethrough.

Abstract: An electronic device includes a main body, a slidable cover member disposed movably on the main body, and a magnetic member is sandwiched between the main body and the cover member to enable the user to move the cover member relative to the main body by a finger while gripping the main body in the palm of the user's hand.

Abstract: The present invention relates to a high frequency module board device having a high frequency transmitting and receiving circuit for modulating and demodulating a high frequency signal. The high frequency module board device comprises a base board (2) whose main surface is formed as a build-up surface (2a) and a high frequency circuit part (3) formed on the build-up surface of the base board (2) and having passive elements formed. The base board (2) has an area (29) in which wiring is not formed in a lower layer from a fourth wiring layer (8b). The high frequency circuit part (3) has an upper electrode part (36) and a lower electrode part (35) in positions corresponding to the area (29) in which the wiring is not formed. Thus, since a capacitance (18) is provided just above the area (29) in which the wiring is not formed, a parasitic capacity that the capacitance (18) receives from ground patterns (14) is reduced. Accordingly, the characteristics of the capacitance (18) can be improved.

Abstract: A housing assembly for a communication device including front and rear housings and an endoskeleton adapted to be secured to the front housing via recesses locate on the endoskeleton and corresponding ribs located on the front housing. The front and rear housings include a cantilever arm and loop assembly to secure the top ends of the front and rear housings to each other. The rear housing includes a pair of hooks located at its bottom end and the second housing includes a pair of latches located at its bottom end. The hooks each have a contact surface adapted to mate with a corresponding contact surface on each latch. The contact surface on each hook are outwardly sloped and the contact surface on each latch is inwardly and downwardly sloped. The contact surface slopes cause the hooks to deflect inwardly when the latches are snapped into the hooks.

Abstract: A portable electronic equipment is capable of preventing warpage of an internal substrate accommodated therein due to pressing operations of button keys to thereby improve the mechanical strength thereof and contribute a downsizing thereof. To this end, a stopper 14 is provided on a front case 1 for limiting the amount of depression of each button key 8. The stopper 14 has a shape to support an entire outer periphery of a flange 15 of each button key or a shape to support an outer periphery of a flange 15 of each button key radially in a plurality of directions. Also, key seats 19 for the button keys are connected with each other in a bridge-shaped configuration, or formed separately or independently from each other. In addition, the front cover is provided with a case cover for preventing the button keys from popping out therefrom.

Abstract: Embodiments of a communication panel are disclosed that include structures that facilitate maintaining and assembling the communication panel, protect the keypad buttons, and/or protect the integrated circuits of the communication panel. Embodiments include structures such as perpendicular circuit board configurations, multi-sided removable cover surfaces, and multi-layered front panels with keypad holes. Elastomeric keypads may be included and buttons of the keypad protrude through holes in the multi-layered front panels.

Abstract: An earphone jack is fixed on a printed circuit board by soldering as well as a first holding rib and a second holding rib for holding in the horizontal direction and a third holding rib for holding in the perpendicular direction with respect to the printed circuit board are provided on a shield case. The shield case is held in the perpendicular direction with respect to the printed circuit board by a fourth holding rib provided on the case.

Abstract: A battery-locking mechanism for securing a battery (60) having an upper end in a portable electronic device (1) includes a plurality of spring members (50) which are received in a plurality of receptacles (28) defined by a plurality of partition walls. A battery-receiving compartment (24) is defined by an upper wall (242), a lower wall (246), and a bottom (248). A plurality of apertures (2422) is defined through the upper wall. Each receptacle is located adjacent to the upper wall and is in communication with the aperture. Each spring member includes a base portion (52) and an elastic portion (54). A free end of the elastic portion extends to the aperture. A tab protrudes from the upper end of the battery, extending into the aperture when the battery is arranged into the battery-receiving compartment, and the spring element then presses against the tab of the battery. The battery is thus secured in the battery-receiving compartment of the portable electronic device.

Abstract: A foldaway electronic device includes a base unit having opposing lateral surfaces and an end portion, a cover unit having opposing lateral surfaces, each of which corresponds to one of the lateral surfaces of the base unit, and an end portion that is rotatably attached to the end portion of the base unit, whereby the cover unit may be rotated between a folded position relative to the base unit and an unfolded position relative to the base unit, a locking mechanism in the base unit and cover unit that locks the cover unit in the folded position, a lock release mechanism in the base unit that releases the locking mechanism when the cover unit is in the folded position, and impelling means in the base unit for impelling the cover unit from the folded position to an unfolded position after the lock release mechanism has been actuated, wherein either lateral surface of the base unit has a guard portion that extends over and prevents contact by a user's thumb and fingers with a portion of the corresponding la

Abstract: A device and method for enclosing electronics in a waterproof environment and transferring the heat generated by the electronics to an external environment is provided. The device includes a housing and a heat sink. The housing includes top and bottom pieces that are sealed to one another forming an interior portion. The interior portion houses electronic components. A face plate is coupled to the front of the housing and includes an opening that is sealed with a hinged door. A fastening mechanism securely fastens the heat sink to the housing so that a substantial portion of the heat sink is in contact with the back side of housing. Heat sink includes a base and a plurality of fins that are adapted to transfer heat generated by the electronic components within the interior of the housing to an external environment.

Abstract: An extended input device for a portable wireless communication apparatus includes a first input keypad, a second input keypad, a pivot portion connecting the first input keypad and the second input keypad, and pivotally switching the first input keypad and the second input keypad between a normal and an operating statuses, and a signal transmission portion connected to the first input keypad and the second input keypad for transmitting a signal between the extended input device and the portable wireless communication apparatus. Therefore, the extended input device can provide an enough area for typing and a small size for being easily packed up to be carried on.

Abstract: An electronic circuit unit having a circulator is formed of a circuit board made by laminating a plurality of dielectric substrates; first, second, and third central conductors disposed at intervals of 120 degrees on a plurality of dielectric substrates and partially intersecting in the upper and lower directions; a magnet and a ferrite member disposed above and below the intersection of the central conductors; a first yoke 10 covering the outside of the magnet; and a second yoke 11 covering the outside of the ferrite member. One end of each of the central conductors serves as an input and output terminal, and the ends are disposed at intervals of 120 degrees. Adjacent input and output terminals are connected by inductive elements.

Abstract: A foldaway electronic device includes a base unit having opposing lateral surfaces and an end portion, a cover unit having opposing lateral surfaces, each of which corresponds to one of the lateral surfaces of the base unit, and an end portion that is rotatably attached to the end portion of the base unit, whereby the cover unit may be rotated between a folded position relative to the base unit and an unfolded position relative to the base unit, a locking mechanism in the base unit and cover unit that locks the cover unit in the folded position, a lock release mechanism in the base unit that releases the locking mechanism when the cover unit is in the folded position, and impelling means in the base unit for impelling the cover unit from the folded position to an unfolded position after the lock release mechanism has been actuated, wherein either lateral surface of the base unit has a guard portion that extends over and prevents contact by a user's thumb and fingers with a portion of the corresponding la

Abstract: A fiber mesh net is insert molded into an interior cavity of a cover structure of a portable electronic device such as a cellular or radio telephone to provide EMI shielding. The fiber mesh net is also bonded to one surface of a polymer sheet which additionally carries electronic circuitry on its opposite side to form a laminate which is inserted molded into a cover structure to extend electrical circuitry functionality via selected fibers of the fiber mesh net for access from the electronic device cover.

Abstract: An automotive electronic component (10), including a base component (12), a face plate (14) detachable from the base component (12), a cantilever element (16) positioned on either the base component (12) or the face plate (14), and a rib element (18) positioned on the other of the base component (12) or the face plate (14). During removal of the face plate (14) from the base component (12), the rib element (18) engages the cantilever element (16) and prevents complete disengagement of the face plate (14) from the base component (12) until an additional force is applied to the face plate (14).

Abstract: A latching assembly for a battery door of a portable electronic device includes a latch body that is retained on either the battery door or the housing of the device and which includes an encapsulated biasing spring and snapping catches that cannot be accessed by a user.

Abstract: A stylus-accommodating structure for a wireless communication apparatus includes a printed-circuit board (3), a receiving block (31) and a planar antenna (33). The receiving block further includes an outer surface (300) and a tunnel (310) for receiving a stylus (5). By providing the planar antenna (33) to be formed on the outer surface of the receiving block and further the receiving block to be built at the printed-circuit board, the wireless communication apparatus equipped with the stylus-accommodating structure can then be presented more compact.

Abstract: A shielding can for a printed circuit board which includes a frame with side walls and a lid with apparatus to increase flexibility of the lid. The flexibility apparatus are slits on the sides of the lid. These slits enable a flexible contraction, when soldering the shielding can onto the printed circuit board. The invention also includes a method for mounting the shielding can onto printed circuit boards. The shielding can is placed onto the printed circuit board and heated slowly to melt the solder paste to solder the shielding can to the printed circuit board. The heating phase is followed by a fast cooling phase, and the flexible apparatus (the slits on the shielding can) reduces the internal stress, which occurs when the shielding can is exposed to different temperatures at the same time, without any permanent deformations.

Abstract: The present disclosure shows the placement of a light pipe or indicator 120 in the “knuckle” of the hinge of the radiotelephone. The indicator is generally centered in the knuckle and follows the curvature of the hinge. Placement of an indicator in this location allows the indicator to be viewable from the front of the handset with the top housing either opened or closed, while in use or in the charger, or from the top if the radiotelephone is carried in a shirt pocket or belt clip holster.

Abstract: Antenna elements for a wireless unit provided in a housing body are sandwiched between a housing base and a housing cover. The size and thickness of the apparatus housing are thus reduced, and the structure of installing the antenna elements is simplified into an economically advantageous structure. The antenna elements are provided, with the surfaces of their antenna patterns all exposed from the side walls of the housing body. It is hence possible to realize an antenna unit with stable and high performance without being electromagnetically influenced by components installed in the housing.

Abstract: A portable telephone set includes a case having first and second sides opposite to each other, a group of keys is located on the first side of the case, and a card loading mechanism. The case includes first and second portions located on the second side. The first portion can accommodate a battery pack, and the second portion is next to the first portion and accommodates the card loading mechanism. A card in which information is stored can be loaded to the card loading mechanism.

Abstract: The invention provides an electronic device including a housing having a plurality of sidewalls defining a generally rectangular cavity within the housing to support therein a predetermined number of generally cylindrical batteries. One of the sidewalls defines an aperture extending through the sidewall and opening into the cavity. A support member is mounted in the housing and includes a support portion extending into the cavity to support inserted batteries in a position transverse to at least one of the sidewalls until all of the predetermined number of batteries are inserted into the cavity.

Abstract: A foldaway electronic device includes a base unit having opposing lateral surfaces and an end portion, a cover unit having opposing lateral surfaces, each of which corresponds to one of the lateral surfaces of the base unit, and an end portion that is rotatably attached to the end portion of the base unit, whereby the cover unit may be rotated between a folded position relative to the base unit and an unfolded position relative to the base unit, a locking mechanism in the base unit and cover unit that locks the cover unit in the folded position, a lock release mechanism in the base unit that releases the locking mechanism when the cover unit is in the folded position, and impelling means in the base unit for impelling the cover unit from the folded position to an unfolded position after the lock release mechanism has been actuated, wherein either lateral surface of the base unit has a guard portion that extends over and prevents contact by a user's thumb and fingers with a portion of the corresponding lateral

Abstract: A main side of the device (10) has a keyboard with keys (4A, 5A, 4C) and a display (6). According to the invention, part of the keyboard (4) can be moved between two operational positions for which the device retains the same size: a first position called reduced keyboard (and large display) (FIGS. 1C, 1D) and a second position with an extended keyboard (and a small display) (FIGS. 1A, 1B). The keys that are accessible for one position are inaccessible for another position and vice versa.

Abstract: An earphone jack is fixed on a printed circuit board by soldering as well as a first holding rib and a second holding rib for holding in the horizontal direction and a third holding rib for holding in the perpendicular direction with respect to the printed circuit board are provided on a shield case. The shield case is held in the perpendicular direction with respect to the printed circuit board by a fourth holding rib provided on the case.

Abstract: A display screen switch is disposed above a liquid-crystal display (16) that includes a display screen (16a) and is capable of displaying on the display screen (16a) an image that indicates various information comprising switch information. The switch includes a casing (22) disposed above the display screen (16a) and having a circuit. The casing (22) includes a plate-like casing body (25) disposed on the display screen (16a), and a transparent window portion (26) formed to penetrate the casing body (25) from a surface side to a reverse side thereof. The switch further includes a switch body (23) disposed on the casing body (25), the switch body (23) being connected to the circuit, and a transparent operation plate (24) disposed above the surface side of the casing body (25), the transparent operation plate (24) being depressed so as to operate the switch body (23).

Abstract: A cover structure (1) for a portable electronic device includes a metallic shell (10) and a plastic mounting frame (9) secured to the shell. The shell has a skirting panel (101) and a bottom panel (100) which cooperatively define a space (102) for receiving the mounting frame. The frame includes a U-shaped part (11) and an arcuate part (12) which are respectively dimensioned to closely fit onto corresponding end portions of the shell. Each of the U-shaped and arcuate parts includes at least one threaded post (112, 121) adapted for engaging with a corresponding fastening member (3), in order to fasten a printed circuit board (2) of the portable electronic device to the cover structure.

Abstract: A wireless device such as a wireless telephone includes stackable modules. Each of the modules provides an independent wireless device function. Each of the modules stacks onto and connects to at least one of the other modules. Each of the modules includes a communications contact connected to a communications contact of at least one of the other modules. Each of the modules also includes a power bus contact connected to a power bus contact of at least one of the other modules. The modules include a memory module, a flash memory module, a read only memory (ROM) module, a random access memory (RAM) module, a central processing unit (CPU) module, a display module, a keypad module, a transceiver module, a battery module, a global positioning satellite (GPS) receiver module, and the like. Each of the modules includes keying patterns to ensure that the modules are connected together in a proper order.

Abstract: A belt clip for attaching a device to a user includes a back plate having first and second wing portions which include flanges for engaging with the exterior surface of an electronic device. The first and second wing portions are coupled together by an integrated biasing portion that allows the first and second wing portions to be forced together when the flanges are gripping the electronic device and apart when it is desired to remove the electronic device from the belt clip. The wing portions each include integrally formed cam members that engage with a cam hole formed in a clip member. As the clip member is rotated relative to the back plate, the cam members and thus the wing portions are brought together to grasp the electronic device. The clip member is then retained relative to the back plate with a locking feature.

Abstract: An electronic device includes a display and a keyboard having a fixed part and a movable part. The movable part moves between an open position and a closed position. The size of the electronic device remains unchanged when the movable part is in the open and closed positions. The movable part covers a portion of the display in the open position, and has back keys which cover the display portion and are inaccessible by the user. In the closed position, the entire display is exposed, and front keys of the movable part are inaccessible and cover keys of the fixed part.

Abstract: Portable apparatus comprising a display 4 having an electrical interface 5 with at least one electrical contact 24; a circuit board 2 having an electrical interface with at least one electrical contact 12 for supplying current to the display 4; and a frame 7 for securing the display 4 to the portable apparatus and urging the display contact 24 and circuit board contact 12 together to allow current to flow from the circuit board contact 12 to the display contact 24.

Abstract: A flexible printed circuit board has first and second connection portions 18 and 19 where contacts are exposed and first and second path portions 16 and 17 where conductor patterns 11 are arranged that connect the contacts 11a and 11b of the first and second connection portions 18 and 19 together. The first and second path portions 16 and 17 are formed so as to have substantially symmetrical shapes with each other about a predetermined straight line, and the flexible printed circuit board is folded up along the straight line C1 and C2. Alternatively, a flexible printed circuit board has a conductor pattern 11 formed between first and second insulating sheets 12 and 13, and has a shielding conductor 14 fixed to the second insulating sheet 13. The flexible printed circuit board is folded up with the second insulating sheet 13 outside so that the conductor pattern 11 is enclosed inside the shielding conductor 14.

Abstract: A hinge device of a flip type mobile telephone including a body and a flip cover with a speaker mounted thereon. In the hinge device, a hinge assembly includes a spring connector pin; a hinge shaft having at least one open end, a pair of opposite protrusions, a pair of opposite indents, and a cylindrical inner wall into which the connector pin is pressed, the shaft being movable along a rotation axis; a hinge housing having at least one open end into which the hinge shaft is inserted; guide means for enabling the hinge shaft to move rectilinearly in the hinge housing; and securing means for preventing separation of the hinge shaft from the hinge housing. The hinge device further includes a coupling member having a pair of opposite protrusions and a pair of opposite indents, for keeping in sliding surface contact with the hinge shaft; and conducting means interposed between the hinge assembly and the coupling member, for electrically connecting the speaker to a printed circuit board housed within the body.

Abstract: The present invention provides an apparatus for supporting electronic equipment. The electronic equipment comprises a groove, a first engagement mechanism and a second engagement mechanism. The apparatus comprises a main body, a first component and a second component. The main body has a turning spindle disposed within the groove. The first component and the second component locate on the main body. While the first component is coupled with the first engagement mechanism, the apparatus extends and the electronic equipment is vertical. While the second component is coupled with the second engagement mechanism, the apparatus retracts and the electronic equipment is horizontal.

Abstract: Method and apparatus for affixing a circuit board with a protective chassis by affixing the circuit board substantially near the center of the long axis of the circuit board so that ends of the circuit board along the longer axis of the circuit board can flex freely uninhibited by the chassis. In the event that the circuit board-chassis unit is hit or dropped, since the mechanical shock is transmitted from the impact point on the chassis only to the approximate center of the circuit board, circuit components on the circuit board located away from the center of the circuit board will experience a reduced level of mechanical shock. Also, solder joints will experience less mechanical stress because there is less circuit board bending. This reduction in the level of mechanical shock to the circuit board increases the chances that the circuit components will not be damaged or become detached from the circuit board.

Abstract: A portable communication device assembly comprises a first communication device housing (12), a second communication device housing (14), and a snap retainer (40) for interconnecting the housings (12 and 14).

Abstract: A foldaway electronic device includes a base unit having opposing lateral surfaces and an end portion, a cover unit having opposing lateral surfaces, each of which corresponds to one of the lateral surfaces of the base unit, and an end portion that is rotatably attached to the end portion of the base unit, whereby the cover unit may be rotated between a folded position relative to the base unit and an unfolded position relative to the base unit, a locking mechanism in the base unit and cover unit that locks the cover unit in the folded position, a lock release mechanism in the base unit that releases the locking mechanism when the cover unit is in the folded position, and impelling means in the base unit for impelling the cover unit from the folded position to an unfolded position after the lock release mechanism has been actuated, wherein either lateral surface of the base unit has a guard portion that extends over and prevents contact by a user's thumb and fingers with a portion of the corresponding lateral

Abstract: A compact electronic device of portable type comprises a flexible sheet 3 on which a plurality of flexible switches 2 are arranged and having a flat board portion 4 being in close contact with a surface of a chassis 1 and a flat cable portion 5 extending from the flat plate portion 4. Provided on an end of the flat cable portion 5 is a terminal portion 6 to be connected to the connector 32 on a circuit board 31. Formed on an end portion of the chassis 1 is a lift-up prevention piece 8 for preventing a part of the flat plate portion 4 of the flexible sheet 3 from being lifted up from a surface of the chassis 1. The lift-up prevention piece 8 is not only constructed as to pass the flat cable portion 5 of the flexible sheet 3 through, but also can be formed into a hook-shape to hook the flat cable portion 5 of the flexible sheet 3.

Abstract: A main side of the device (10) has a keyboard with keys (4A, 5A, 4C) and a display (6). According to the invention, part of the keyboard (4) can be moved between two operational positions for which the device retains the same size: a first position called reduced keyboard (and large display) (FIG. 1C, 1D) and a second position with an extended keyboard (and a small display) (FIG. 1A, 1B). The keys that are accessible for one position are inaccessible for another position and vice versa.

Abstract: A printed circuit board for electrical devices having RF components, particularly for mobile radio telecommunication devices, wherein to increase the packing density of electronic circuits and conductor-track structures on such circuit board, a “micro via” coating is initially applied to one or both sides of a printed circuit board assembly. This “micro via” coating then has, in particular, RF circuits and RF conductor-track structures applied to at least part of its surface. Finally, the RF circuits and RF conductor-track structures are protected in relation to an RF ground coating of the printed circuit board assembly by barrier areas arranged in an assembly coating, situated directly below the “micro via” coating, of the printed circuit board assembly against interfering influences which impair the RF parameters, to be set in each case, of the RF circuits and RF conductor-track structures.

Abstract: An electronic device has a filter function, and enables a communications device to be miniaturized and made thin at reduced cost. A pair of spiral conductive patterns are provided adjacent to each other on a printed circuit board having multiple electronic elements provided thereon, and one end of each of the spiral conductive patterns connects via through holes to a ground pattern provided on the bottom face of the printed circuit board. Then, a cavity case is electrically connected to the ground pattern, and is mounted on the printed circuit board so as to cover the top faces of the spiral conductive patterns, thereby forming a cavity resonance filter joined to the printed circuit board.

Abstract: A heat insulation chamber according to the present invention is a heat insulation chamber which is made of heat insulating material and forms an inner chamber for accommodating an electronic part. This heat insulation chamber achieves coupling between the electronic part accommodated in the inner chamber formed within a cabinet and the outside of the cabinet by a radio transmission path or a coupling path by static coupling or inductive coupling. A thermostatic chamber and a cryostat according to the present invention comprise the aforementioned heat insulation chamber, a heat exchanger mounted in the heat insulation chamber, and a thermoregulator which maintains the temperature of the inner chamber accommodating the electronic part at an operating temperature of the electronic part through the heat exchanger.

Abstract: A portable electronic device comprises a casing 1, a first circuit board 3 provided in the interior of the casing 1, and a circuit module 5 attached to the first circuit board 3. The circuit module 5 comprises a chassis 51 engaged with the first circuit board 3 and a second circuit board 32 fixed to the chassis 51. A male connector 61 attached to one circuit board and a female connector 62 attached to the other circuit board are engaged with each other to have the both circuit boards electrically connected. The chassis 51 is formed with a pair of arms 52, 52 holding and supporting the respective end faces of the first circuit board 3 on respective end portions of the chassis 51. The pair of arms 52, 52 extends to the first circuit board 3 on respective end portions of the chassis 51, and an end portion of each arm 52 is held between an end face of the first circuit board 3 and the inner face of the casing 1.