Handset radiofrequency front end module in fine pitch quad flat no lead (FQFP-N) package

• US 20040201423A1
• Filed: 03/30/2004
• Published: 10/14/2004
• Est. Priority Date: 04/14/2003
• Status: Active Grant

• Current Assignee: MACOM Technology Solutions Holdings, Inc.
• Original Assignee: M/A Com, Inc. (MACOM Technology Solutions Holdings, Inc.)
• Inventors: Weigand, Christopher Dirk, Winslow, Thomas Aaron, Giacchino, Richard John
• Granted Patent: US 7,148,751 B2
• Time in Patent Office: Days
• US Class Current: 330/307
• CPC Class Codes: H03F 1/30 Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in differential amplifiers H03F3/45479
• CPC Class Codes: H03F 1/34 Negative-feedback-circuit arrangements with or without positive feedback H03F1/02 - H03F1/30, H03F1/38 - H03F1/50, H03F3/50 take precedence ; for rejection of common mode signals H03F3/45479
• CPC Class Codes: H03F 2200/111 the amplifier being a dual or triple band amplifier, e.g. 900 and 1800 MHz, e.g. switched or not switched, simultaneously or not
• CPC Class Codes: H03F 2200/153 Feedback used to stabilise the amplifier
• CPC Class Codes: H03F 2200/18 the bias of the gate of a FET being controlled by a control signal
• CPC Class Codes: H03F 2200/451 the amplifier being a radio frequency amplifier
• CPC Class Codes: H03F 3/195 in integrated circuits
• CPC Class Codes: H03F 3/211 using a combination of several amplifiers H03F3/60 takes precedence
• CPC Class Codes: H03F 3/3432 with bipolar transistors
• CPC Class Codes: H03F 3/3435 using Darlington amplifiers
• CPC Class Codes: H03F 3/50 Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
• CPC Class Codes: H03F 3/72 Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
• CPC Class Codes: H04B 1/006 using switches for selecting the desired band H04B1/0057 takes precedence
• 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 1/12 Neutralising, balancing, or compensation arrangements
• 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

An apparatus and method for transmitting signal, the apparatus comprising a front end telecommunications module including a power amplifier, a matching circuit coupled to the power amplifier, and a filter coupled to the matching circuit, such that a signal received by the power amplifier is transmitted to the filter through the matching circuit. The telecommunications module provides quad-band capability in a compact design.

Claims

1. A circuit comprising:

at least one first power amplifier;

at least one first matching circuit coupled to the at least one first power amplifier; and

,

at least one first filter coupled to the at least one first matching circuit,

wherein a signal received by the at least one first power amplifier is transmitted to the at least one first filter through the at least one first matching circuit.

2. The circuit of claim 1, further comprising a decoder coupled to the at least one first power amplifier.

3. The circuit of claim 1, further comprising at least one switch coupled to the at least one first filter.

4. The circuit of claim 1, further comprising:

at least one second power amplifier;

at least one second matching circuit coupled to the at least one second power amplifier; and

,

at least one second filter coupled to the at least one second matching circuit, wherein a signal received by the at least one second power amplifier is transmitted to the at least one second filter through the at least one second matching circuit.

5. The circuit of claim 4, further comprising a decoder coupled to the at least one first and at least one second power amplifiers.

6. The circuit of claim 5, further comprising at least one switch coupled to the at least one first and at least one second power amplifiers, and to the at least one first and at least one second filters.

7. The circuit of claim 1, wherein the at least one first power amplifier, the at least one first matching network, and the at least one first filter are all disposed on a leadframe.

8. The circuit of claim 7, wherein the leadframe includes forty-two connector pads.

9. The circuit of claim 6, wherein the at least one switch comprises a single pole six throw switch.

10. The circuit of claim 6, wherein the at least one switch is coupled to at least one antenna terminal.

11. The circuit of claim 6, wherein the at least one switch is coupled to at least one reception terminal.

12. The circuit of claim 5, wherein the decoder provides control signals to the at least one first and at least one second power amplifiers.

13. The circuit of claim 12, wherein the decoder provides control signals to at least one switch coupled to the at least one first and at least one second filters.

14. The circuit of claim 1, wherein the at least one first filter comprises a low pass filter.

15. The circuit of claim 4, wherein the at least one first and at least one second filters both comprise low pass filters.

16. The circuit of claim 4, wherein the at least one first and second power amplifiers, the at least one first and second matching networks, and the at least one first and second filters are all disposed on a leadframe.

17. A method for transmitting a signal, comprising the steps of:

applying a first signal to a first input port of a circuit module;

amplifying and filtering the first signal in the circuit module; and

,

providing the amplified and filtered signal at a first output port of the circuit module.

18. The method of claim 17, comprising the further steps of:

applying a second signal to a second input port of a circuit module;

amplifying and filtering the second signal in the circuit module; and

,

providing the amplified and filtered signal at a second output port of the circuit module.

19. A telecommunications system comprising:

an antenna; and

,

a front end module coupled to the antenna,

wherein the front end module includes at least one first power amplifier, at least one first matching circuit coupled to the at least one first power amplifier, and at least one first filter coupled to the at least one first matching circuit, wherein a signal received by the at least one first power amplifier is transmitted to the at least one first filter through the at least one first matching circuit.