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公开(公告)号：JPH10145248A
公开(公告)日：1998-05-29
申请号：JP14320597
申请日：1997-05-15
Applicant: MOTOROLA INC
Inventor： PENNOCK MARK A , THOMPSON DAVID C
Abstract: PROBLEM TO BE SOLVED: To adjust a transmitting power level to another power level by modifying a 2nd control signal according to the state of a detection circuit network and deciding a 1st control signal according to the 2nd control signal. SOLUTION: A transmitter 135 of a radio telephone 100 outputs a transmitting signal with a transmitting power that is designated by a control signal on a line 137. A power level detector 149 is connected to the transmitter 135 and detects a transmitting power through a coupler 145. A controller 161 controls the generation of a transmitting power by the transmitter according to a detection voltage that is included in a demodulation signal and a specification power step. The controller 161 receives the specification power step and the detection voltage and outputs a control signal that represents a transmitting power according to the specified power step and the detection voltage. Further, a detection circuit network 159 is connected to the power level detector in a parallel structure and can modify a detection voltage by changing from one state to another state.
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公开(公告)号：GB2293278B
公开(公告)日：1998-07-15
申请号：GB9518821
申请日：1995-09-14
Applicant: MOTOROLA INC
Inventor： THOMPSON DAVID C , VANNATTA LOUIS JAY
Abstract: A radio communication device a first housing portion (101) and second housing portion (103). The second housing portion is movably supported on the first housing portion to move between an extended position and a collapsed position. The second housing portion projects outwardly from the first housing portion in the open position. An antenna (107) is positioned in the second housing portion, the antenna includes a first component (640, 749, 859, 969) having a first tuning characteristic and a second component (647, 748, 858, 968) having a second tuning characteristic. One of the antenna components is tuned for a preferred characteristic when the radio telephone is collapsed and the other of the antenna components is tuned to the preferred characteristic when the antenna is extended.
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公开(公告)号：ITRM960648A1
公开(公告)日：1998-03-23
申请号：ITRM960648
申请日：1996-09-23
Applicant: MOTOROLA INC
Inventor： THOMPSON DAVID C , KIM JIN DONG , POWLES JON J
Abstract: A retractable antenna assembly provides a substantially matched antenna impedance to a matching circuit (712) of a radiotelephone (200) whether the retractable antenna assembly is in the extended position or the retracted position. In one embodiment parts (304, 312) of a capacitor (714) are integrally formed on an upper portion of the retractable antenna assembly (206) such that when in the retracted position the capacitor (714) contributes to the overall antenna impedance. In another embodiment a capacitor (1302) is integrally formed on the lower portion of the retractable antenna assembly (900).
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公开(公告)号：GB2313263A
公开(公告)日：1997-11-19
申请号：GB9707938
申请日：1997-04-18
Applicant: MOTOROLA INC
Inventor： PENNOCK MARK A , THOMPSON DAVID C
Abstract: A radiotelephone receives a command from a base station to set its transmit power to within a specified range. The radiotelephone regulates its transmit power to a nominal level within this range by measuring the transmit power in power level detector 149 and outputting a feedback signal V DET representative of transmit power on line 163 to a controller 161. In response to this signal the controller sends a control signal on line 137 determining the transmit power of transmitter 135. A sensing network 159 senses when the radiotelephone' s retractable antenna 101 is extended and modifies the feedback signal V DET by switching in a parallel resistance 165. Modifying V DET causes controller 161 to adjust the transmit power to a reduced value when antenna 101 is extended. Thus two different power levels within the range specified by the base station are obtained. Sensing network 159 can alternatively or in addition sense the attachment of a jack 109 to a plug 111 and so cause a reduction in transmit power when external antenna is not connected.
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公开(公告)号：TR199601030A2
公开(公告)日：1997-07-21
申请号：TR9601030
申请日：1996-12-19
Applicant: MOTOROLA INC
Inventor： THOMPSON DAVID C , KIM JIN D , HASSEMER BRIAN J
Abstract: A wireless communication device (20) provides a matching state between a radio circuit (28) and an antenna assembly (26) in both its retracted and extended positions, and does so with an elegant design that increases reliability and manufacturability by reducing the number and complexity of components and moving mechanical parts. A matching circuit (30), which is reconfigured according to a switch (32) that is responsive to the antenna's position, provides the matching states.
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Patent Agency Ranking
公开(公告)号：GB2308744A
公开(公告)日：1997-07-02
申请号：GB9625360
申请日：1996-12-05
Applicant: MOTOROLA INC
Inventor： THOMPSON DAVID C , KIM JIM D , HASSEMER BRIAN J
IPC: H04B1/40 , H01Q1/24 , H01Q9/36 , H01Q11/08 , H04B1/04 , H04B1/18 , H04B1/38 , H04Q7/32 , H01Q1/10
Abstract: A wireless communication device (20) provides a matching state between a radio circuit (28) and an antenna assembly (26) in both its retracted and extended positions, and does so with an elegant design that increases reliability and manufacturability by reducing the number and complexity of components and moving mechanical parts. A matching circuit (30), which is reconfigured according to a switch (32) that is responsive to the antenna's position, provides the matching states.
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公开(公告)号：AU7428196A
公开(公告)日：1997-06-26
申请号：AU7428196
申请日：1996-12-12
Applicant: MOTOROLA INC
Inventor： THOMPSON DAVID C , KIM JIN D , HASSEMER BRIAN JON
IPC: H04B1/40 , H01Q1/24 , H01Q9/36 , H01Q11/08 , H04B1/04 , H04B1/18 , H04B1/38 , H04Q7/32 , H04B1/034
Abstract: A wireless communication device (20) provides a matching state between a radio circuit (28) and an antenna assembly (26) in both its retracted and extended positions, and does so with an elegant design that increases reliability and manufacturability by reducing the number and complexity of components and moving mechanical parts. A matching circuit (30), which is reconfigured according to a switch (32) that is responsive to the antenna's position, provides the matching states.
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公开(公告)号：CA2191817A1
公开(公告)日：1997-06-23
申请号：CA2191817
申请日：1996-12-02
Applicant: MOTOROLA INC
Inventor： THOMPSON DAVID C , KIM JIN D , HASSEMER BRIAN J
Abstract: A wireless communication device (20) provides a matching state between a radio circuit (28) and an antenna assembly (26) in both its retracted and extended positions, and does so with an elegant design that increases reliability and manufacturability by reducing the number and complexity of components and moving mechanical parts. A matching circuit (30), which is reconfigured according to a switch (32) that is responsive to the antenna's position, provides the matching states.
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公开(公告)号：MY119210A
公开(公告)日：2005-04-30
申请号：MYPI9605113
申请日：1996-12-05
Applicant: MOTOROLA INC
Inventor： THOMPSON DAVID C , KIM JIN D , HASSEMER BRIAN J
Abstract: A WIRELESS COMMUNICATION DEVICE (20) PROVIDES A MATCHING STATE BETWEEN A RADIO CIRCUIT (28) AND AN ANTENNA ASSEMBLY (26) IN BOTH ITS RETRACTED AND EXTENDED POSITIONS, AND DOES SO WITH AN ELEGANT DESIGN THAT INCREASES RELIABILITY AND MANUFACTURABILITY BY REDUCING THE NUMBER AND COMPLEXITY OF COMPONENTS AND MOVING MECHANICAL PARTS. A MATCHING CIRCUIT (30), WHICH IS RECONFIGURED ACCORDING TO A SWITCH (32) THAT IS RESPONSIVE TO THE ANTENNA''S POSITION, PROVIDES THE MATCHING STATES.
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公开(公告)号：GB2313263B
公开(公告)日：2000-07-12
申请号：GB9707938
申请日：1997-04-18
Applicant: MOTOROLA INC
Inventor： PENNOCK MARK A , THOMPSON DAVID C
Abstract: A transmitter (135) responds to a first control signal by outputting a transmit signal at a transmit power according to the first control signal. A power-level detector (149) responds to the transmit power by outputting a second control signal representative of a power level of the transmit power. A sensing network (159) is capable of changing from one state to another state in response to a stimulus, for example, the position of a retractable antenna (101) or attachment of a connector (113) or both. The sensing network may modify the second control signal depending upon the state of the sensing circuit. A controller (161) responds to the second control signal, whether modified or not, by determining the first control signal according to the second control signal.
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