Abstract: An antenna provides dual band capability by providing a single feed (102) leading into a helix (104), the helix characterized by a pitch (106) and number of turns (120) varied to provide dual band operation to a portable communication device.

Abstract: A tire pressure monitoring system (TPMS) (100) includes an inverted F-antenna (102), stem (106) and meandering radiator element (104). The TPMS's operating frequency is controlled by the electrical length of the meandering radiator element (104) without the use of matching circuitry.

Abstract: An antenna provides dual band capability by providing a single feed (102) leading into a helix (104), the helix characterized by a pitch (106) and number of turns (120) varied to provide dual band operation to a portable communication device.

Abstract: An antenna assembly allows for a retractable/extendable antenna to be used in conjunction with a sealed portable communication device (200). An antenna bushing assembly (204) is used in conjunction with a sealed housing (208) having an unsealed compartment (206). The sealed housing (208) includes a radio frequency (RF) connector (210) formed therein. The bushing assembly (204) includes an RF plug (216) for mating with the RF connector (210) of the sealed housing (208). A sleeve (230) extends from the bushing assembly (204) to act as a passageway fro water intrusion into the unsealed compartment (206). An antenna (100) can thus retract and extend within the sleeve (230) of the unsealed compartment (206) while the RF connection remains intact due to the interconnect provided between the bushing assembly (204) and the sealed housing (208).

Abstract: A communication device 10 and a corresponding method are arranged for changing the radiation pattern of an antenna 14, where the radiation pattern of the antenna 14 is set to a half-space pattern if the communication device 10 is in close proximity to an object. A reflector 18 is activated to produce the half space radiation pattern. The reflector 18 is deactivated to produce the full space pattern. A switching device 26 determines the state of the reflector 18. A sensing and control device 23 controls the state of the switching device 26.

Abstract: An antenna assembly allows for a retractable/extendable antenna to be used in conjunction with a sealed portable communication device (200). An antenna bushing assembly (204) is used in conjunction with a sealed housing (208) having an unsealed compartment (206). The sealed housing (208) includes a radio frequency (RF) connector (210) formed therein. The bushing assembly (204) includes an RF plug (216) for mating with the RF connector (210) of the sealed housing (208). A sleeve (230) extends from the bushing assembly (204) to act as a passageway fro water intrusion into the unsealed compartment (206). An antenna (100) can thus retract and extend within the sleeve (230) of the unsealed compartment (206) while the RF connection remains intact due to the interconnect provided between the bushing assembly (204) and the sealed housing (208).

Abstract: A communication device (100, 500, 800) includes a housing (115) and an antenna system. The housing (115) comprises at least one metallic portion (110) and at least one non-metallic portion (105). The antenna system is for tuning the communication device (100, 500, 800) to radiate at one or more frequencies. The antenna system is located within the non-metallic portion (105) of the housing (115).

Abstract: A communication device (100, 500, 800) includes a housing (115) and an antenna system. The housing (115) comprises at least one metallic portion (110) and at least one non-metallic portion (105). The antenna system is for tuning the communication device (100, 500, 800) to radiate at one or more frequencies. The antenna system is located within the non-metallic portion (105) of the housing (115).

Abstract: A multi-frequency internal antenna apparatus (10) for a clamshell type electronic device includes a flexible circuit (20) that electrically couples circuitry between the main housing (12) and flip housing (14). A conductive element (36) is disposed on the main housing (12) and tuned to be electrically resonant above the operating frequencies of the electronic device. The conductive element (36) is disposed in proximity to the flip housing (14) in the open position and is electrically coupled at a high impedance point to the flexible circuit (20) and subsequently to the circuitry in the flip housing. When the movable flip housing is in the open position and being held by a user, the circuitry in the movable flip housing forms a secondary conductive element providing dipole characteristics that tunes the combined conductive elements to the operating frequencies of the electronic device.

Abstract: A multi-frequency internal antenna apparatus (10) for a clamshell type electronic device includes a flexible circuit (20) that electrically couples circuitry between the main housing (12) and flip housing (14). A conductive element (36) is disposed on the main housing (12) and tuned to be electrically resonant above the operating frequencies of the electronic device. The conductive element (36) is disposed in proximity to the flip housing (14) in the open position and is electrically coupled at a high impedance point to the flexible circuit (20) and subsequently to the circuitry in the flip housing. When the movable flip housing is in the open position and being held by a user, the circuitry in the movable flip housing forms a secondary conductive element providing dipole characteristics that tunes the combined conductive elements to the operating frequencies of the electronic device.

Abstract: A communication device 10 and a corresponding method are arranged for changing the radiation pattern of an antenna 14, where the radiation pattern of the antenna 14 is set to a half-space pattern if the communication device 10 is in close proximity to an object. A reflector 18 is activated to produce the half space radiation pattern. The reflector 18 is deactivated to produce the full space pattern. A switching device 26 determines the state of the reflector 18. A sensing and control device 23 controls the state of the switching device 26.