Tuned radio apparatus
First Claim
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1. Tuned radio apparatus, comprising:
- receiver means for producing an output signal in response to selection command for a desired radio frequency signal having a respective selected frequency, said receiver means including tuning voltage generating means for generating a tuning voltage indicative of said selected frequency and selecting means for selecting said desired radio frequency signal from signals supplied thereto in response to said tuning voltage; and
antenna means tunable in response to said tuning voltage to resonate at said selected frequency for receiving a radio frequency signal having said selected frequency and for supplying the same to said receiver means, said antenna means including an antenna terminal to which the received radio frequency signal is supplied, said antenna terminal further connected to said tuning voltage generating means of said receiver means to receive said tuning voltage, at least one resonating antenna tunable to said selected frequency, filter means connected to said antenna terminal for outputting said tuning voltage and control means connected to receive said tuning voltage from said filter means for tuning said antenna to said selected frequency.
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Abstract
A tuned radio apparatus includes a tuned radio receiver and a tuned antenna apparatus both of which are tuned to the same frequency. The antenna apparatus may include a varactor similar to a varactor used in the receiver and receiving the same tuning voltage for tuning at least one antenna. The tuning voltage may be supplied from the receiver to the antenna apparatus and the received radio frequency output may be supplied from the antenna apparatus to the receiver over an antenna cable connected to a single antenna terminal.
22 Citations
18 Claims
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1. Tuned radio apparatus, comprising:
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receiver means for producing an output signal in response to selection command for a desired radio frequency signal having a respective selected frequency, said receiver means including tuning voltage generating means for generating a tuning voltage indicative of said selected frequency and selecting means for selecting said desired radio frequency signal from signals supplied thereto in response to said tuning voltage; and antenna means tunable in response to said tuning voltage to resonate at said selected frequency for receiving a radio frequency signal having said selected frequency and for supplying the same to said receiver means, said antenna means including an antenna terminal to which the received radio frequency signal is supplied, said antenna terminal further connected to said tuning voltage generating means of said receiver means to receive said tuning voltage, at least one resonating antenna tunable to said selected frequency, filter means connected to said antenna terminal for outputting said tuning voltage and control means connected to receive said tuning voltage from said filter means for tuning said antenna to said selected frequency. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Tuned radio apparatus, comprising:
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receiver means for producing an output signal in response to a selection command for a desired radio frequency signal having a respective selected frequency, said receiving means including tuning voltage generating means for generating a tuning voltage indicative of said selected frequency and selecting means for selecting said desired radio frequency signal from signals supplied thereto in response to said tuning voltage; resonating antenna element tunable to said selected frequency for receiving a radio frequency signal having said selected frequency and for supplying the same to said receiving means; and varactor means response to said tuning voltage for tuning said resonating antenna element to said selected frequency. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. Tuned antenna apparatus, for use in a radio apparatus including a tuned receiver, comprising:
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a source of tuning voltage adapted for supply to a tuned receiver and indicative of a selected radio frequency; a resonating antenna element and an electronically controllable capacitor means connected to said resonating antenna element for forming with said resonating antenna element a resonant circuit for effectively receiving and passing a selected frequency band of radiant energy signals; and control means responsive to said tuning voltage for generating an electronic control signal and supplying said electronic control signal to said electronically controllable capacitor means for establishing a resonant frequency for said resonant circuit which selects the frequency band of said radiant energy signals to be effectively received and passed from said resonating antenna element. - View Dependent Claims (15, 16, 17, 18)
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Specification