METHOD AND ARRANGEMENT RELATING TO TRANSCEIVERS
First Claim
1. A method of calibrating components in a transceiver that comprises a transmitter chain and a receiver chain which include a pre-determined number of frequency stages and means for frequency transposition between said frequency stages, the method comprising:
- successively establishing a sequence of signal connections between the frequency stages in the transmitter chain and the corresponding frequency stages in the receiver chain, thereby obtaining a sequence of signal paths from one baseband stage in the transmitter chain to a baseband stage in the receiver chain, wherein each signal path differs from the preceding signal paths by including one or more specific components that shall be calibrated and that are not included in any one of the preceding signal paths;
transmitting pre-determined test signals over each of said signal paths;
receiving response signals corresponding to the transmitted test signals;
establishing whether or not the performance or performances of the specific components for each signal path is/are acceptable in relation to the test signals and the response signals; and
adjusting the specific component or specific components so as to obtain an acceptable performance when it is established that said performance is unacceptable.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to the field of methods and arrangements pertaining to transceivers. The object of the invention is to enable transceivers to be used more simply and more cheaply. This is achieved with an improved method of calibrating transceivers, and with transceivers that can be calibrated in accordance with the method. A sequence of signal connections (60-70) is established between a transmitter chain (3) and a receiver chain (5) in a transceiver. A corresponding sequence of signal paths is established from a baseband stage in the transmitter chain to a baseband stage in the receiver chain. Each signal path includes at least one specific component that shall be calibrated with the use of the established signal path, wherein any further components in said signal path will have already been calibrated with the use of earlier established signal paths. When calibrating the components, pre-determined test signals (TS1-TS11) are sent over the signal paths, wherein the response signals (RS1-RS11) are received as a response to the transmitted test signals. It is ascertained whether or not the components in the transceiver fulfil pre-determined performance requirements, on the basis of the test signals and the response signals. The components are adjusted when they do not fulfil performance requirements.
30 Citations
13 Claims
-
1. A method of calibrating components in a transceiver that comprises a transmitter chain and a receiver chain which include a pre-determined number of frequency stages and means for frequency transposition between said frequency stages, the method comprising:
-
successively establishing a sequence of signal connections between the frequency stages in the transmitter chain and the corresponding frequency stages in the receiver chain, thereby obtaining a sequence of signal paths from one baseband stage in the transmitter chain to a baseband stage in the receiver chain, wherein each signal path differs from the preceding signal paths by including one or more specific components that shall be calibrated and that are not included in any one of the preceding signal paths;
transmitting pre-determined test signals over each of said signal paths;
receiving response signals corresponding to the transmitted test signals;
establishing whether or not the performance or performances of the specific components for each signal path is/are acceptable in relation to the test signals and the response signals; and
adjusting the specific component or specific components so as to obtain an acceptable performance when it is established that said performance is unacceptable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A transceiver circuit comprising:
-
a transmitter chain and a receiver chain that include a pre-determined number of frequency stages and means for frequency transposition between the frequency stages and;
means for establishing successively a sequence of signal connections between the frequency stages in the transmitter chain and the corresponding frequency stages in the receiver chain, thereby obtaining a sequence of signal paths from a baseband stage in the transmitter chain to a baseband stage in the receiver chain, wherein each signal path differs from the preceding paths by virtue of including one or more specific components that are not included in any one of the preceding signal paths. - View Dependent Claims (13)
-
Specification