Carrier aggregation using diplexers

Patent metadata

Field	Value
Publication number	US-10432235-B2
Application number	US-201615177125-A
Country	US
Kind code	B2
Filing date	Jun 8, 2016
Priority date	Jun 9, 2015
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

A multiplexing system can include a first diplexer and a second diplexer. The first diplexer can be configured to filter a first transmit signal received at the first transmit terminal to a first cellular frequency band and output the filtered first transmit signal at the first common terminal. The first diplexer can be further configured to filter a first receive signal to a second cellular frequency band and output the filtered first receive signal at the first receive terminal input. The second diplexer can be configured to filter a second transmit signal received at the second transmit terminal to the second cellular frequency band and output the filtered second transmit signal at the second common terminal. The second diplexer can be further configured to filter a second receive signal to the first cellular frequency band and output the filtered second receive signal at the second receive terminal.

First claim

What is claimed is:

1. A multiplexing system comprising:
a first diplexer having a first transmit terminal, a first receive terminal, and a first common terminal, the first diplexer configured to filter a first transmit signal received at the first transmit terminal to a first cellular frequency band and output the filtered first transmit signal at the first common terminal, the first diplexer further configured to filter a first receive signal received at the first common terminal to a second cellular frequency band and output the filtered first receive signal at the first receive terminal; and
a second diplexer having a second transmit terminal, a second receive terminal, and a second common terminal, the second diplexer configured to filter a second transmit signal received at the second transmit terminal to the second cellular frequency band and output the filtered second transmit signal at the second common terminal, the second diplexer further configured to filter a second receive signal received at the second common terminal to the first cellular frequency band and output the filtered second receive signal at the second receive terminal, the second diplexer further configured to filter the second receive signal to the first cellular frequency band concurrently with the first diplexer filtering the first transmit signal to the first cellular frequency band.

2. The multiplexing system of claim 1 further comprising a first power amplifier having a first output coupled to the first transmit terminal, the first power amplifier configured to amplify an unamplified first transmit signal to generate the first transmit signal.

3. The multiplexing system of claim 2 wherein the first power amplifier is a narrowband power amplifier configured to amplify the first cellular frequency band of the unamplified first transmit signal.

4. The multiplexing system of claim 2 further comprising a second power amplifier having a second output coupled to the second transmit terminal, the second power amplifier configured to amplify an unamplified second transmit signal to generate the second transmit signal.

5. The multiplexing system of claim 4 wherein the second power amplifier is a narrowband power amplifier configured to amplify the second cellular frequency band of the unamplified second transmit signal.

6. The multiplexing system of claim 1 further comprising a first antenna coupled to the first common terminal and a second antenna coupled to the second common terminal.

7. The multiplexing system of claim 6 further comprising a diversity receiver system and one or more diversity antennas coupled to the diversity receiver system.

8. The multiplexing system of claim 7 wherein the diversity receiver system includes a first filter configured to filter a first diversity signal received at the one or more diversity antennas to the first cellular frequency band.

9. The multiplexing system of claim 8 wherein the diversity receiver system includes a second filter configured to filter a second diversity signal received at the one or more diversity antennas to the second cellular frequency band.

10. The multiplexing system of claim 1 further comprising a first antenna band select switch (BSS) having a first antenna BSS pole, a first antenna BSS throw, and a second antenna BSS throw, the first antenna BSS throw coupled to the first common terminal.

11. The multiplexing system of claim 10 further comprising a third diplexer having a third transmit terminal, a third receive terminal, and a third common terminal coupled to the second antenna BSS throw, the third diplexer configured to filter a third transmit signal received at the third transmit terminal to a third cellular frequency band and output the filtered third transmit signal at the third common terminal, the third diplexer further configured to filter a third receive signal received at the third common terminal to a fourth cellular frequency band and output the filtered third receive signal at the third receive terminal.

12. The multiplexing system of claim 11 further comprising a first power amplifier band select switch having a first power amplifier band select switch pole, a first power amplifier band select switch throw, and a second power amplifier band select switch throw, the first power amplifier band select switch throw coupled to the first transmit terminal and the second power amplifier band select switch throw coupled to the third transmit terminal.

13. The multiplexing system of claim 1 wherein the first diplexer is a passive device.

14. The multiplexing system of claim 1 wherein the first diplexer includes a first bandpass filter and a second bandpass filter.

15. The multiplexing system of claim 1 wherein the first cellular frequency band and the second cellular frequency band includes Universal Mobile Telecommunications System (UMTS) Bands 2 and 5.

16. The multiplexing system of claim 1 wherein the first cellular frequency band and the second cellular frequency band includes Universal Mobile Telecommunications System (UMTS) Bands 4 and 12.

17. A radio-frequency (RF) module comprising:
a packaging substrate configured to receive a plurality of components; and
a multiplexing system implemented on the packaging substrate, the multiplexing system including a first diplexer having a first transmit terminal, a first receive terminal, and a first common terminal, the first diplexer configured to filter a first transmit signal received at the first transmit terminal to a first cellular frequency band and output the filtered first transmit signal at the first common terminal, the first diplexer further configured to filter a first receive signal received at the first common terminal to a second cellular frequency band and output the filtered first receive signal at the first receive terminal, the multiplexing system further including a second diplexer having a second transmit terminal, a second receive terminal, and a second common terminal, the second diplexer configured to filter a second transmit signal received at the second transmit terminal to the second cellular frequency band and output the filtered second transmit signal at the second common terminal, the second diplexer further configured to filter a second receive signal received at the second common terminal to the first cellular frequency band and output the filtered second receive signal at the second receive terminal, the second diplexer further configured to filter the second receive signal to the first cellular frequency band concurrently with the first diplexer filtering the first transmit signal to the first cellular frequency band.

18. The RF module of claim 17 wherein the RF module is a front-end module (FEM).

19. The RF module of claim 17 wherein the multiplexing system further includes a first antenna band select switch having a first antenna band select switch pole, a first antenna band select switch throw, and a second antenna band select switch throw, the first antenna band select switch throw coupled to the first common terminal.

20. A wireless device comprising:
a transceiver configured to generate a radio-frequency (RF) signal;
a front-end module (FEM) in communication with the transceiver, the FEM including a packaging substrate configured to receive a plurality of components, the FEM further including a multiplexing system implemented on the packaging substrate, the multiplexing system including a first diplexer having a first transmit terminal, a first receive terminal, and a first common termina

Assignees

• Skyworks Solutions Inc

Inventors

• Thompson Philip H
• Arkiszewski Roman Zbigniew
• Caron Joshua James

Classifications

• H04B1/0057 Primary

  using diplexing or multiplexing filters for selecting the desired band · CPC title

• H04W84/042

  Public Land Mobile systems, e.g. cellular systems · CPC title

• H04B2201/70724

  UMTS · CPC title

• H04B7/04 Primary

  using two or more spaced independent antennas · CPC title