Mobile wireless communications device with RF immune charging contacts
First Claim
1. A mobile wireless communications device, comprising:
- a housing;
at least one circuit board carried by the housing and including radio frequency (RF) circuitry carried by the at least one circuit board and comprising a transmitter and receiver, and a processor carried by the at least one circuit board and operative with the RF circuitry;
an antenna mounted within the housing and operative with the RF circuitry;
a charging circuit mounted within the housing for charging a battery carried by and powering the mobile wireless communications device and comprising at least one charging contact carried by the housing and having an exposed surface on the housing and spaced from the at least one circuit board and configured to engage an external charging cradle when connected thereto, said charging contact further comprising an internal connector comprising a lower biased spring connector that extends downward to engage the at least one circuit board and connecting to the charging circuit and an upper unbiased connector section that extends upward from the biased spring connector; and
an RE filter connected to said charging contact and comprising a cylindrical ferrite material surrounding and engaging said upper unbiased connector section of the internal connector at a location adjacent to the charging contact to minimize RF coupling from the at least one charging contact to the antenna and reduce transmitter harmonics emission and receiver de-sense.
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0 Petitions
Accused Products
Abstract
In accordance with a non-limiting aspect, a mobile wireless communications device includes a housing, at least one circuit board carried by the housing, radio frequency (RF) circuitry, and a processor. An antenna is operative with the RF circuitry. A charging circuit charges a battery carried by and powers the device and includes at least one charging contact carried by the housing and configured for engaging an external charging cradle when connected thereto. It includes an internal connector extending to at least one circuit board and connecting to the charging circuitry. An RF filter includes a ferrite material surrounding at least a portion of the internal connector to minimize RE coupling from the at least one charging contact to the antenna and reduce transmitter harmonics emission and receiver de-sense.
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Citations
19 Claims
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1. A mobile wireless communications device, comprising:
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a housing; at least one circuit board carried by the housing and including radio frequency (RF) circuitry carried by the at least one circuit board and comprising a transmitter and receiver, and a processor carried by the at least one circuit board and operative with the RF circuitry; an antenna mounted within the housing and operative with the RF circuitry; a charging circuit mounted within the housing for charging a battery carried by and powering the mobile wireless communications device and comprising at least one charging contact carried by the housing and having an exposed surface on the housing and spaced from the at least one circuit board and configured to engage an external charging cradle when connected thereto, said charging contact further comprising an internal connector comprising a lower biased spring connector that extends downward to engage the at least one circuit board and connecting to the charging circuit and an upper unbiased connector section that extends upward from the biased spring connector; and an RE filter connected to said charging contact and comprising a cylindrical ferrite material surrounding and engaging said upper unbiased connector section of the internal connector at a location adjacent to the charging contact to minimize RF coupling from the at least one charging contact to the antenna and reduce transmitter harmonics emission and receiver de-sense. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A mobile wireless communications device, comprising:
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a housing comprising a rectangular configured housing case having a rear surface, longitudinal side edges and lower end and having a battery opening in the rear surface to which a battery for powering the device is received; at least one circuit board carried by the housing and including radio frequency {RF) circuitry carried by the at least one circuit board and comprising a transmitter and receiver, and a processor carried by the at least one circuit board and operative with the RF circuitry; an antenna mounted at the lower end of the housing case and operative with the RF circuitry; a charging circuit mounted within the housing for charging any battery received within the battery opening and comprising opposing charging contacts of opposite polarity carried by the housing at the lower end of the housing case adjacent to said antenna and each charging contact having an exposed surface on the housing and spaced from the at least one circuit board and configured to engage an external charging cradle when connected thereto, each charging contact further comprising an internal connector comprising a lower biased spring connector that extends downward to engage the at least one circuit board and connecting to the charging circuit and any battery for charging same and an upper unbiased connector section that extends upward from the biased spring connector; and an RF filter associated with each respective charging contact and comprising a cylindrical ferrite material surrounding said upper unbiased connector section of said internal connector at a location adjacent to the respective charging contact to which said RF filter is associated to minimize RF coupling from each charging contact to the antenna and reduce transmitter harmonics emission and receiver de-sense. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method of operating a mobile wireless communications device, which comprises:
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providing a housing, at least one circuit board carried by the housing and including radio frequency (RF) circuitry carried by the at least one circuit board and comprising a transmitter and receiver, a processor carried by the at least one circuit board and operative with the RF circuitry, an antenna mounted within the housing and operative with the RF circuitry, and a charging circuit mounted within the housing for charging a battery carried by and powering the mobile wireless communications device and comprising at least one charging contact carried by the housing and having an exposed surface on the housing and spaced from the at least one circuit board and configured for engaging an external charging cradle when connected thereto, said charging contact further comprising an internal connector comprising a lower biased spring connector that extends downward to engage the at least one circuit board and connecting to the charging circuit and any battery for charging same and an upper unbiased connector section that extends upward from the biased spring connector; and minimizing RF coupling from the at least one charging contact to the antenna while reducing transmitter harmonics emission and receiver de-sense by surrounding the internal connector at a location adjacent to the charging contact of the charging connector with an RF filter formed from a cylindrical ferrite material surrounding and engaging the upper unbiased connector section of the internal connector. - View Dependent Claims (19)
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Specification