Transmitter and/or receiver module

• US 20050107042A1
• Filed: 01/17/2003
• Published: 05/19/2005
• Est. Priority Date: 01/31/2002
• Status: Abandoned Application

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: De Graauw, Antonius Johannes Matheus
• Application Number:
  US10/502,789
• Publication Number:
  US 20050107042A1
• Time in Patent Office: Days
• US Class Current: 455/78
• CPC Class Codes: H04B 1/0458 Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages matching circuits in general H03H
• CPC Class Codes: H04B 1/40 Circuits
• CPC Class Codes: H04B 1/48 in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter H04B1/46 takes precedence

Abstract

The transmitter and/or receiver module comprises a dipole antenna (28) and a matching circuit (26) matching the output impedance of the module to the antenna impedance, a switch circuit (24) for switching between received and transmitted signals, a power amplifier (30) for amplifying the transmitted signal, and a low-noise receiver amplifier (32) for amplifying the received signal, wherein the matching circuit (26) and the antenna (28) are designed to provide a bandpass filter function for the module. Differential signals are provided from the transmitter power amplifier (30) to the antenna (28) and/or from the antenna (28) to the receiver amplifier (32) without conversion of the differential signals to single-ended signals.

Claims

1. A method of processing signals

to be transmitted from a transmitter module comprising a dipole antenna and a transmitter power amplifier for amplifying the transmitted signal;

and/or

to be received from a receiver module comprising a dipole antenna and a receiver amplifier for amplifying the received signal, which method comprises a step of providing differential signals from the transmitter power amplifier to the antenna and/or from the antenna to the receiver amplifier without conversion of the differential signals to single-ended-signals.

2. A method as claimed in claim 1, wherein one and the same balanced antenna is used for the transmitter module and/or the receiver module.

13. A consumer electronics device comprising the module as claimed in claim 1.

3. A transmitter and/or receiver module comprising

a dipole antenna (28),

a transmitter power amplifier (30) for amplifying the transmitted signal, and/or

a receiver amplifier (32) for amplifying the received signal, wherein

the antenna (28) and the transmitter power amplifier (30) and/or the receiver amplifier (32) are interconnected respective through double line connections (25,27;

25,29), whereby

differential signals from the antenna are provided to the receiver amplifier (32) and from the transmitter power amplifier (30) to the antenna (28) without conversion of the differential signals to single-ended signals.

4. A module as claimed in claim 3 having a balanced switch circuit (24) for switching between received and transmitted signals, wherein the antenna (28) and the transmitter power amplifier (30) for amplifying the transmitted signal and/or the receiver amplifier (32) for amplifying the received signal are connected through double line interconnections (25,27,29) to the switch circuit (24).

5. A module as claimed in claim 3 having a matching circuit (26) matching the output impedance of the antenna (28) and the transmitter power amplifier (30) and/or the receiver amplifier (32), wherein the antenna (28) comprises two antenna sections (40,42) which are connected to the matching circuit (26) at two distinct nodes (41,43) thereof.

6. A module as claimed in claim 5, wherein the matching circuit (26) and the antenna (28) are designed to provide a bandpass filter function for the module.

7. A module as claimed in claim 3, wherein the matching circuit (26) is an integrated parallel resonant impedance matching circuit.

8. A module as claimed in claim 3, wherein the combination of the impedance matching circuit (26) and a dipole radiator antenna (28) forms a two-pole band-pass-filter.

9. A module as claimed in claim 3, wherein the antenna (28) comprises a stepped-impedance printed dipole.

10. A substrate provided with a dipole antenna, said antenna comprising an impedance step arrangement.

11. A substrate as claimed in claim 10, wherein the impedance step is realized in that the dipole antenna comprises two connecting parts each having a connection line and a dipole bar, which dipole bar has a larger width than the connection line.

12. A substrate as claimed in claim 11, characterized in that a matching circuit is present where the parts of the antenna interconnect, a major portion of said matching circuit and the antenna being embodied in one electrically conductive layer.