Abstract
We present a microwave correlation measurement system based on two low-cost USB-connected software defined radio dongles modified to operate as coherent receivers by using a common local oscillator. Existing software is used to obtain I/Q samples from both dongles simultaneously at a software tunable frequency. To achieve low noise, we introduce an easy low-noise solution for cryogenic amplification at 600-900 MHz based on single discrete HEMT with 21 dB gain and 7 K noise temperature. In addition, we discuss the quantization effects in a digital correlation measurement and determination of optimal integration time by applying Allan deviation analysis.
| Original language | English |
|---|---|
| Article number | 114706 |
| Pages (from-to) | 1-5 |
| Journal | Review of Scientific Instruments |
| Volume | 87 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1 Nov 2016 |
| MoE publication type | A1 Journal article-refereed |
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Dive into the research topics of 'Low-noise correlation measurements based on software-defined-radio receivers and cooled microwave amplifiers'. Together they form a unique fingerprint.Projects
- 1 Finished
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Quantum technology and materials for parallel sensor-actuator units in ICT
Hakonen, P. (Principal investigator), Kauppinen, O. (Project Member), Tomi, M. (Project Member), Thanniyil Sebastian, A. (Project Member) & Häkkinen, P. (Project Member)
01/01/2015 → 31/12/2016
Project: Academy of Finland: Other research funding
Equipment
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OtaNano – Low Temperature Laboratory
Savin, A. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility
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