Static antenna tuning and antenna voltage measurement
First Claim
1. An improved antenna tuning apparatus for a transmitter/receiver antenna of a recognition system, said recognition system having an associated matching member which operates with a transponder to control a control mechanism of a device;
- the matching member and other non-matching members containing facilities each of which, when receiving energy transmitted from said transmitter/receiver antenna produces a respective unique recognition signal in said transponder;
control of the device being possible only upon simultaneous occurrence of both operation of the control mechanism and production of a recognition signal by the matching member;
wherein the improved static antenna tuning and antenna voltage measurement apparatus comprises;
antenna voltage conversion circuitry for converting a voltage signal to a measurement signal representative of transmitter/receiver antenna operation, said voltage signal arising from said transmitter/receiver antenna transmitting or receiving a recognition signal;
a comparator circuit for comparing said measurement signal to a predetermined optimal transmitter/receiver antenna operation signal; and
control circuitry for controlling the tuning of said transmitter/receiver antenna such that;
(a) in the event that said measurement signal indicates optimal performance of said transmitter/receiver antenna relative to said predetermine optimal transmitter/receiver antenna signal, storing said measurement signal as said predetermined optimal transmitter/receiver antenna operation signal, (b) in the event that said measurement signal indicates less than optimal performance of said transmitter/receiver antenna, generating a tuning signal to antenna tuning circuitry associated with said transmitter/receiver antenna and (c)repeating steps (a) to and (b) until an optimal transmitter/receiver antenna performance condition exists.
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Accused Products
Abstract
A static antenna tuning and antenna voltage measurement circuit (40) includes antenna voltage conversion circuitry (44) for converting a voltage signal (42) to a measurement signal representative of transmitter/receiver antenna (16) operation. Voltage signal (42) arises from transmitter/receiver antenna (16) transmitting or receiving a recognition signal (S1, S2). Comparator circuitry (48, 50, 52) compares the measurement signal to a predetermined optimal transmitter/receiver antenna operation signal. Control circuitry (54, 56) controls the tuning of transmitter/receiver antenna (16) such that (a) in the event that the measurement signal indicates optimal performance of transmitter/receiver antenna (16) relative to the predetermined optimal transmitter/receiver antenna operation signal, storing the measurement signal as the predetermined optimal transmitter/receiver antenna operation signal; (b) in the event that the measurement signal indicates less than optimal performance of transmitter/receiver antenna (16), generating a tuning signal to antenna tuning circuitry (56) associated with transmitter/receiver antenna (16); and (c) repeating steps (a) and (b) until an optimal transmitter/receiver antenna performance condition exists.
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Citations
20 Claims
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1. An improved antenna tuning apparatus for a transmitter/receiver antenna of a recognition system, said recognition system having an associated matching member which operates with a transponder to control a control mechanism of a device;
- the matching member and other non-matching members containing facilities each of which, when receiving energy transmitted from said transmitter/receiver antenna produces a respective unique recognition signal in said transponder;
control of the device being possible only upon simultaneous occurrence of both operation of the control mechanism and production of a recognition signal by the matching member;
wherein the improved static antenna tuning and antenna voltage measurement apparatus comprises;antenna voltage conversion circuitry for converting a voltage signal to a measurement signal representative of transmitter/receiver antenna operation, said voltage signal arising from said transmitter/receiver antenna transmitting or receiving a recognition signal; a comparator circuit for comparing said measurement signal to a predetermined optimal transmitter/receiver antenna operation signal; and control circuitry for controlling the tuning of said transmitter/receiver antenna such that;
(a) in the event that said measurement signal indicates optimal performance of said transmitter/receiver antenna relative to said predetermine optimal transmitter/receiver antenna signal, storing said measurement signal as said predetermined optimal transmitter/receiver antenna operation signal, (b) in the event that said measurement signal indicates less than optimal performance of said transmitter/receiver antenna, generating a tuning signal to antenna tuning circuitry associated with said transmitter/receiver antenna and (c)repeating steps (a) to and (b) until an optimal transmitter/receiver antenna performance condition exists. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- the matching member and other non-matching members containing facilities each of which, when receiving energy transmitted from said transmitter/receiver antenna produces a respective unique recognition signal in said transponder;
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8. A method for forming an improved antenna tuning apparatus for a transmitter/receiver of a recognition system transmitter/receiver circuit, said recognition system having an associated matching member which operates with a transponder to control a control mechanism of a device;
- the matching member and other non-matching members containing facilities each of which, when receiving energy transmitted from said transmitter/receiver antenna produces a respective unique recognition signal in said transponder;
control of the device being possible only upon simultaneous occurrence of both operation of the control mechanism and production of a recognition signal by the matching member;
wherein the method for forming the improved static antenna tuning apparatus comprises the steps of;forming an antenna voltage conversion circuitry for converting a voltage signal to a measurement signal representative of transmitter/receiver antenna operation, said voltage signal arising from said transmitter/receiver antenna transmitting or receiving a recognition signal; forming a comparator circuit for comparing said measurement signal to a predetermined optimal transmitter/receiver antenna operation signal; and forming control circuitry for controlling the tuning of said transmitter/receiver antenna such that;
(a) in the event that said measurement signal indicates optimal performance of said transmitter/receiver antenna relative to said predetermine optimal transmitter/receiver antenna signal, storing said measurement signal as said predetermined optimal transmitter/receiver antenna operation signal and (b) in the event that said measurement signal indicates less than optimal performance of said transmitter/receiver antenna, generating a tuning signal to antenna tuning circuitry associated with said transmitter/receiver antenna; and
(c)repeating steps (a) and (b) until an optimal transmitter/receiver antenna performance condition exists. - View Dependent Claims (9, 10, 11, 12, 13, 14)
- the matching member and other non-matching members containing facilities each of which, when receiving energy transmitted from said transmitter/receiver antenna produces a respective unique recognition signal in said transponder;
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15. An improved method for tuning a transmitter/receiver antenna of a recognition system transmitter/receiver circuit, said recognition system having an associated matching member which operates with a transponder to control a control mechanism of a device;
- the matching member and other non-matching members containing facilities each of which, when receiving energy transmitted from said transmitter/receiver antenna produces a respective unique recognition signal in said transponder;
control of the device being possible only upon simultaneous occurrence of both operation of the control mechanism and production of a recognition signal by the matching member;
wherein the improved static antenna tuning method comprises the steps of;converting a voltage signal to a measurement signal representative of transmitter/receiver antenna operation, said voltage signal arising from said transmitter/receiver antenna transmitting or receiving a recognition signal; comparing said measurement signal to a predetermined optimal transmitter/receiver antenna operation signal; and controlling the tuning of said transmitter/receiver antenna such that;
(a) in the event that said measurement signal indicates optimal performance of said transmitter/receiver antenna relative to said predetermine optimal transmitter/receiver antenna signal, storing said measurement signal as said predetermined optimal transmitter/receiver antenna operation signal and (b) in the event that said measurement signal indicates less than optimal performance of said transmitter/receiver antenna, generating a tuning signal to antenna tuning circuitry associated with said transmitter/receiver antenna; and
(c)repeating steps (a) and (b) until an optimal transmitter/receiver antenna performance condition exists. - View Dependent Claims (16, 17, 18, 19, 20)
- the matching member and other non-matching members containing facilities each of which, when receiving energy transmitted from said transmitter/receiver antenna produces a respective unique recognition signal in said transponder;
Specification