EP0622907A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A radio phone and method of operating a radio phone
Assignee: Nokia Oyj
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Filing: 1994-04-21
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Granted: —
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Expires: 2014-04-21
Abstract
Abstract The present invention relates to a procedure for using a radio phone (2) with an external amplifying means (1) for receiving, amplifying and transmitting a radio frequency reception signal to the radio phone, in which radio phone a reception frequency signal is supplied to a front end amplifier (9). When the external amplifying means (1) is connected to the radio phone, the front end amplifier (9) of the radio phone is bypassed or the gain thereof (9) is adjusted to be lower. The control signal (OHJ) is preferably a voltage control signal of direct voltage frequency or low frequency produced in the amplifying means (1), which in the amplifying means is added into the reception signal, and in the radio phone separated from the reception signal into a control signal of the front end amplifier.
Inventors
- 👤 Erkka Sointula
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 23:21
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3052; H02; H02J; H02J7/00; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/18; H04B1/38; H04B1/3827; H04B1/3877
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
87 words
A radio phone (2) adapted for coupling to an external amplifying means (1), comprising a reception branch (RX R ) and a transmission branch (TX R ), the reception branch (RX R ) being provided with a front end amplifier (9) for amplifying a received radio frequency signal, wherein a control signal (OHJ) is coupled to the radio phone (2) when the external amplifying means (1) is coupled to the radio phone (2) for controlling amplification of the received radio frequency by the front end amplifier (9).
Claim 2
Dependent Claim
22 words
A radio phone (2) according to claim 1, wherein the control signal (OHJ) reduces the gain of the front end amplifier (9).
Claim 3
Dependent Claim
22 words
A radio phone (2) according to claim 1, wherein the control signal (OHJ) bypasses the gain of the front end amplifier (9).
Claim 4
Dependent Claim
19 words
A radio phone according to claims 1 to 3, wherein the control signal (OHJ) is a low-frequency voltage signal.
Claim 5
Dependent Claim
17 words
A radio phone according to claim 4, wherein the control signal (OHJ) is a direct voltage signal.
Claim 6
Dependent Claim
28 words
A radio phone according to claims 1 to 5, wherein there is provided a separate terminal (3) for connecting the control signal (OHJ) to the radio phone (2).
Claim 7
Dependent Claim
55 words
A radio phone according to claim 6, wherein there is provided means (10) coupled between the separate terminal (3) and a control input of the front end amplifier (9) for separating the control signal (OHJ) from other signals and for coupling the control signal (OHJ) to the control input of the front end amplifier (9).
Claim 8
Dependent Claim
74 words
Radio phone according to claim 7, wherein the separate terminal (3) is an antenna terminal of the radio phone suitable for coupling to the external amplifying means (1), amplifying and for transmitting a radio frequency signal to the radio and the means (10) coupled between the separate terminal (3) and the control input of the front end amplifier comprise a filter (10) for separating the control signal (OHJ) from the radio frequency reception signal.
Claim 9
Dependent Claim
32 words
A radio phone according to claim 8 dependant on claim 5, wherein the filter (10) further comprises an ac/dc converter for converting the low-frequency control signal (OHJ) into a direct voltage signal.
Claim 10
Independent Claim
77 words
A method of operating a radio phone (2) with an external amplifying means (1) for receiving, amplifying and transmitting a radio frequency reception signal to and from a radio phone, in which radio phone the reception frequency signal is supplied to a front end amplifier (9), wherein when the external amplifying means (1) is coupled to the radio phone, the front end amplifier (9) of the radio phone is bypassed or the gain thereof (9) is reduced.
Claim 11
Dependent Claim
46 words
A method according to claim 10, wherein when the external amplifying means (1) is coupled to the radio phone, a control signal (OHJ) is coupled to a control input of the front end amplifier (9), for controlling the front end amplifier (9) of the radio phone.
Claim 12
Dependent Claim
65 words
A method according to claim 11, wherein the control signal (OHJ) is produced in the external amplifying means (1) where it is added into a received radio frequency signal, supplied to the radio phone via an antenna terminal (3) of the radio phone, and it is separated from the radio frequency reception signal in the radio phone and coupled to the front end amplifier (9).
Claim 13
Dependent Claim
152 words
An external amplifying means (1) coupled to a radio phone (2), comprising an antenna terminal (ANT) for receiving and transmitting radio frequency signals, means (6') connected to the antenna terminal (ANT) for separating reception and transmission frequency signals from one another, a reception branch (RX v ) and a transmission branch (TX v ) to amplify respective received and transmitted signals, and second separation means (6) connected to each of the branches to separate the reception and transmission frequency signals into their respective branches (RX v , TX v ), the radio phone being coupled to a terminal point of the second separation means common to reception and transmission frequency signals, wherein there is provided means for producing a control signal (OHJ) of a direct voltage or of a low frequency, and for summing these in the radio frequency reception signal in said common terminal point of said second separation means (6).
Claim 14
Dependent Claim
26 words
Amplifying means according to claim 13, wherein there is provided a dc/dc converter for producing a direct voltage control signal (OHJ) from the supply voltage thereof.
Claim 15
Dependent Claim
27 words
Amplifying means according to claim 13, wherein there is provided a dc/ac converter for producing a low frequency voltage control signal (OHJ) from the supply voltage thereof.
References Cited (Backward Citations)
No citation records indexed.
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