Radio apparatus with adjustable reception quality

• US 7,003,272 B1
• Filed: 11/08/1997
• Issued: 02/21/2006
• Est. Priority Date: 03/03/1997
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Kottschlag, Gerhard, Pitz, Gerhard, Mader, Thomas
• Primary Examiner(s): Corsaro, Nick
• Assistant Examiner(s): Persino, Raymond B.
• Application Number:
  US09/380,165
• Time in Patent Office: 3,027 Days
• Field of Search: 455/226.1, 455/226.3, 455/250.1, 455/254, 455/343.1, 455/295, 455/296, 455/307, 455/70, 455/558, 455/63, 455/218, 455/219, 455/220, 455/234.1, 455/240.1
• US Class Current: 455/254
• CPC Class Codes: H04B 1/109 by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input
• CPC Class Codes: H04B 7/0808 comparing all antennas before reception

Abstract

A radio apparatus (95), particularly for mobile radio, which makes it possible to adjust the signal reception in a predeterminably optimized way is proposed. The radio apparatus (95) includes a receiver part (1) and an evaluation unit (5), which controls the sensitivity and/or the signal-to-noise ratio of the receiver part (1) as a function of a predeterminable signal reception quality and the actual signal reception. In the event of defective signal reception, the evaluation unit (5) increases the sensitivity and/or the signal-to-noise ratio of the receiver part (1), and when signal reception is error-free for a predeterminable time it reduces the sensitivity and/or the signal-to-noise ratio of the receiver part (1).

Claims

1. A radio apparatus for mobile radio, comprising a receiver part provided with an evaluation unit which controls said receiver part as a function of a predeterminable signal reception quality and an actual signal reception, said evaluation unit being formed so that in an event of defective signal reception said evaluation unit increases a parameter selected from the group consisting of a sensitivity, a signal-to-noise ratio, and both of said receiver part, said evaluation unit being formed so that in an event of error-free signal reception for a predetermined time, said evaluation unit lowers said at least one parameter of said receiver part, and wherein in the event of further defective signal reception, said evaluation unit again increases said parameter of said receiver part.

2. The radio apparatus as defined in claim 1, wherein said evaluation unit is formed so that it increases said at least one parameter of said receiver part in an event of neighboring channel disturbance or intermodulation.

3. The radio apparatus as defined in claim 1, wherein said receiver part includes at least one add-on reception amplifier, so that said evaluation unit adds said at least one reception amplifier in an event of defective signal reception and bypasses it in an event of error-free signal reception.

4. The radio apparatus as defined in claim 1, wherein said receiver part has at least one mixer, said evaluation unit being formed so that in an event of defective signal reception said evaluation unit increases a power supply of said at least one mixer to a first predetermined value and in an event of error-free signal reception said evaluation unit reduces it to a second predetermined value.

5. The radio apparatus as defined in claim 1, wherein said receiver part includes at least one first filter configuration and one second filter configuration, so that said evaluation unit adds one of said filter configurations in which a higher signal-to-noise ratio of said receiver part is assured.

6. The radio apparatus as defined in claim 1, wherein said evaluation unit is formed so that in an operating mode it provides at least one operation selected from the group consisting of adding at least one reception amplifier in said receiver part, increasing a power supply of a mixer of said receiving part to a first predetermined value, and switching over to one of filter configuration of said receiver part in which greater signal-to-noise ratio of said receiver part is assured.

7. The radio apparatus of claim 1, wherein the parameter is lowered so that energy is saved.

8. The radio apparatus as defined in claim 1, wherein said evaluation unit is formed so that in an operating mode said evaluation unit increases said at least one parameter of said receiver part to a maximum value.

9. The radio apparatus as defined in claim 8;

and further comprising means forming an insertion slot for a chip card and a card reader, so that the operating mode can be established as a function of the chip card detected in said insertion slot by said card reader.

10. The radio apparatus as defined in claim 8;

and further comprising a push button switch by which the operating mode can be established.

11. The radio apparatus as defined in claim 8;

and further comprising a data processing unit; and

an interface provided for connecting said data processing unit, so that the operating mode is established as a function of data transmitted to the radio apparatus via said interface.

12. The radio apparatus as defined in claim 8;

and further comprising means receiving a request by a base station, so that the operating mode can be established as a function of the request by the base station.

13. The radio apparatus as defined in claim 12;

and further comprising means for sending back a signal sent previously to the radio apparatus.

14. The radio apparatus as defined in claim 8;

and further comprising an external power supply formed so that the operating mode can be established upon detection of said external power supply.

15. The radio apparatus as defined in claim 14;

and further comprising an additional element selected from the group consisting of a power supply adaptor and a connected external antenna, so that the operating mode is established upon detection of said external power supply through said additional element.

16. The radio apparatus as defined in claim 8;

and further comprising a sensor arranged so that the operating mode is established as a function of a measured value ascertained by said sensor.

17. The radio apparatus as defined in claim 16;

and further comprising a battery connected to the radio apparatus, said sensor being formed so as to detect a change of said battery, so that the operating mode is established as a function of the charge of said battery detected by said sensor.