System and method for triggering a device under test via RF leakage

Patent metadata

Field	Value
Publication number	US-8995513-B1
Application number	US-201314076865-A
Country	US
Kind code	B1
Filing date	Nov 11, 2013
Priority date	Nov 11, 2013
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

Device and method for outputting a leaked radio frequency (RF) signal useable for triggering devices under test (DUTs). The device may include a vector signal analyzer (VSA) which may also perform the method for triggering DUTs. The VSA may include a first component, configured to generate an RF signal, an input configured to receive RF signals transmitted from DUTs, and a received RF signal conditioning portion, each coupled to an internal switching portion. The VSA may be configured to generate the RF signal via the first component, leak the RF signal from the first component to the internal switching portion, generating a leaked RF signal, route the leaked RF signal to the input, bypassing the received RF signal conditioning portion and output the leaked RF signal which is useable to trigger DUTs via the input.

First claim

We claim:

1. A vector signal analyzer (VSA), comprising:
a first component, configured to generate a radio frequency (RF) signal;
an internal switching portion, coupled to the first component;
an input, coupled to the internal switching portion, wherein the input is configured to receive RF signals transmitted from devices under test (DUTs); and
a received RF signal conditioning portion, coupled to the internal switching portion, wherein the received RF signal conditioning portion comprises one or more components, wherein the received RF signal conditioning portion is configured to condition, via the one or more components, the received RF signals, and wherein the internal switching portion is configured to route the received RF signals from the input through the received RF signal conditioning portion;
wherein the VSA is configured to:
generate the RF signal via the first component;
leak the RF signal from the first component to the internal switching portion, thereby generating a leaked RF signal, wherein power of the leaked RF signal is above a detectable signal threshold of one or more DUTs;
route, via the internal switching portion, the leaked RF signal to the input, bypassing at least one of the one or more components of the received RF signal conditioning portion, thereby preserving the power of the leaked RF signal above the detectable signal threshold of the one or more DUTs; and
output the leaked RF signal via the input, wherein the outputted leaked RF signal is useable to trigger the one or more DUTs.

2. The VSA of claim 1 , further comprising:
a demodulating circuit, wherein the first component comprises a local oscillator in the demodulating circuit.

3. The VSA of claim 1 , further comprising:
a downconverting circuit, wherein the first component comprises one or more local oscillators in the downconverting circuit, and wherein the one or more local oscillators are configured to generate one or more RF signals, including the RF signal.

4. The VSA of claim 1 , further comprising:
a downconverting circuit coupled to the internal switching portion, wherein the downconverting circuit comprises:
an RF signal mixer;
a demodulating circuit coupled to the RF signal mixer, wherein the first component comprises a first local oscillator in the demodulating circuit, and wherein the first local oscillator is configured to generate the RF signal; and
a second component, wherein the second component comprises one or more second local oscillators, wherein the one or more second local oscillators are configured to generate one or more additional RF signals;

wherein the VSA is further configured to:
generate the RF signal via the demodulating circuit;
generate the one or more additional RF signals via the downconverting circuit; and

wherein to leak the RF signal from the first component to the internal switching portion, the VSA is configured to:
leak the RF signal and at least one of the one or more additional RF signals to the RF signal mixer;
combine, via the RF signal mixer, the RF signal and the at least one of the one or more additional RF signals leaked to the RF signal mixer, thereby generating a combined leaked RF signal, wherein power of the combined leaked RF signal is above the detectable signal threshold of the one or more DUTs; and
leak the combined leaked RF signal to the internal switching portion.

5. The VSA of claim 1 , wherein the one or more components of the received RF signal conditioning portion comprise:
one or more amplifiers.

6. The VSA of claim 1 , wherein the received RF signal conditioning portion comprises one or more variable attenuators, wherein each of the one or more variable attenuators is configurable to provide reduced attenuation.

7. The VSA of claim 6 , wherein the VSA is further configured to:
configure at least one of the one or more variable attenuators for reduced attenuation; and
wherein to route, via the internal switching portion, the leaked RF signal to the input, the VSA is configured to:
route the leaked RF signal through the at least one of the one or more variable attenuators thereby preserving power of the leaked RF signal above the detectable signal threshold of the one or more DUTs.

8. The VSA of claim 1 , wherein the first component comprises:
a calibration synthesizer.

9. The VSA of claim 1 , wherein the output is configured to:
output the RF signal as a conducted signal.

10. The VSA of claim 1 , wherein the output is configured to:
output the RF signal as an over-the-air signal.

11. A method for providing a radio frequency (RF) signal useable to trigger one or more devices under test (DUTs), the method comprising:
providing a vector signal analyzer (VSA), wherein the VSA comprises:
a first component, configured to generate a radio frequency (RF) signal;
an internal switching portion, coupled to the first component;
an input, coupled to the internal switching portion, wherein the input is configured to receive RF signals transmitted from the one or more DUTs; and
a received RF signal conditioning portion, coupled to the internal switching portion, wherein the received RF signal conditioning portion comprises one or more components, wherein the received RF signal conditioning portion is configured to condition, via the one or more components, the received RF signals, and wherein the internal switching portion is configured to route the received RF signals from the input through the received RF signal conditioning portion; and

the VSA performing:
generating the RF signal via the first component;
leaking the RF signal from the first component to the internal switching portion, thereby generating a leaked RF signal, wherein power of the leaked RF signal is above a detectable signal threshold of the one or more DUTs;
routing, via the internal switching portion, the leaked RF signal to the input, bypassing at least one of the one or more components of the received RF signal conditioning portion, thereby preserving the power of the leaked RF signal above the detectable signal threshold of the one or more DUTs; and
outputting the leaked RF signal via the input, wherein the outputted leaked RF signal is useable to trigger the one or more DUTs.

12. The method of claim 11 , wherein the VSA further comprises:
a demodulating circuit, wherein the first component comprises a local oscillator in the demodulating circuit.

13. The method of claim 11 , wherein the VSA further comprises:
a downconverting circuit, wherein the first component comprises one or more local oscillators in the downconverting circuit, the method further comprising:
generating one or more RF signals, including the RF signal, via the one or more local oscillators.

14. The method of claim 11 , wherein the VSA further comprises:
a downconverting circuit coupled to the internal switching portion, wherein the downconverting circuit comprises:
an RF signal mixer;
a demodulating circuit coupled to the RF signal mixer, wherein the first component comprises a first local oscillator in the demodulating circuit; and
a second component, wherein the second component comprises one or more second local oscillators, wherein the one or more second local oscillators are configured to generate one or more additional RF signals;

wherein the method further comprises:
the VSA performing:
generating the one or more additional RF signals via the downconverting circuit; and

wherein said leaking the RF signal from the first component to the internal switching portion comprises:
the VSA performing:
leaking the RF signal and at least one of the one or more additional R

Assignees

• Nat Instr Corp

Inventors

• Sandoval Roman R
• Rupp Craig E
• Reid William G
• Shah Jaffar
• Lamas De Anda Paulo A

Classifications

• H04B17/002 Primary

  Electricity · mapped topic

• H04B17/0085 Primary

  using test signal generators · CPC title

• H04B17/354

  Adjacent channel leakage power · CPC title

• H04B17/16 Primary

  Test equipment located at the transmitter · CPC title