IP Library › Granted Patent US 9,843,291
Granted Patent B2
US 9,843,291 · App. 14/821,614 · Granted Dec 12, 2017

Cascaded switch between pluralities of LNAS

Inventors: Li-Chung Chang (Irvine, CA); Liang Dai (San Diego, CA); Prasad Srinivasa Siva Gudem (San Diego, CA)
Assignee: QUALCOMM Incorporated
H03F1/0205H03F3/19H03F3/211H04B1/006H03F2200/294H03F2200/451H03F2203/21109
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Quick Facts
Patent No.
US 9,843,291
App. No.
14/821,614
Granted
Dec 12, 2017
Kind
B2
Abstract

An apparatus includes a first plurality of low noise amplifiers (LNAs) and a cascaded switch configured to route outputs of the first plurality of LNAs to a second plurality of LNAs.

Claims (25)

1. An apparatus comprising:

a first plurality of low noise amplifiers (LNAs);

a cascaded switch configured to route outputs of the first plurality of LNAs to a second plurality of LNAs;

a third plurality of LNAs; and

a second cascaded switch configured to route outputs of the third plurality of LNAs to a fourth plurality of LNAs.

2. The apparatus of claim 1 , the cascaded switch comprising:

a first plurality of switches that includes first switches having inputs coupled to the first plurality of LNAs; and

a second plurality of switches that includes second switches having inputs coupled to outputs of the first plurality of switches.

3. The apparatus of claim 2 , wherein outputs of the second plurality of switches are coupled to inputs of the second plurality of LNAs.

4. The apparatus of claim 1 , wherein the first plurality of LNAs includes narrow-band LNAs, and wherein the second plurality of LNAs includes wide-band LNAs.

5. The apparatus of claim 1 , wherein the cascaded switch is configured to route the outputs of the first plurality of LNAs via printed circuit board routing to the second plurality of LNAs.

6. The apparatus of claim 1 , wherein the first plurality of LNAs includes a first number of LNAs, wherein the second plurality of LNAs includes a second number of LNAs, and wherein the first number is greater than the second number.

7. The apparatus of claim 1 , wherein the first plurality of LNAs is coupled to a first antenna, and wherein the third plurality of LNAs is coupled to a second antenna.

8. The apparatus of claim 7 , further comprising a receiver that includes a first input coupled to an output of the cascaded switch and that includes a second input coupled to an output of the second cascaded switch.

9. The apparatus of claim 1 , wherein the cascaded switch is configured to couple a plurality of the outputs of the first plurality of LNAs to LNAs of the second plurality of LNAs based on bandwidth and via printed circuit board routing.

10. An apparatus comprising:

means for routing first signals from a first plurality of low noise amplifiers (LNAs) to generate first routed signals;

means for routing the first routed signals to a second plurality of LNAs;

means for routing second signals from a third plurality of LNAs to generate second routed signals; and

means for routing the second routed signals to a fourth plurality of LNAs.

11. The apparatus of claim 10 , the first plurality of LNAs comprising narrow-band LNAs.

12. The apparatus of claim 10 , the second plurality of LNAs comprising wide-band LNAs.

13. The apparatus of claim 10 , further comprising means for signal processing first output signals of the second plurality of LNAs.

14. The apparatus of claim 13 , wherein the means for signal processing comprises means for mixing the first output signals based on a first local oscillator (LO) signal.

15. The apparatus of claim 14 , the means for routing the first signals comprising a first plurality of means for switching, and the means for routing the first routed signals comprising a second plurality of means for switching.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2015
From: CHANG, LI-CHUNG; DAI, LIANG; GUDEM, PRASAD SRINIVASA SIVA
To: QUALCOMM INCORPORATED
Reel/Frame 036524/0451 →
Continuity (1)
Related Publication 20170040947A1 · Feb 9, 2017