---
_id: '31805'
author:
- first_name: Stephan
  full_name: Kruse, Stephan
  id: '38254'
  last_name: Kruse
- first_name: Meysam
  full_name: Bahmanian, Meysam
  id: '69233'
  last_name: Bahmanian
- first_name: Saeed
  full_name: Fard, Saeed
  id: '88494'
  last_name: Fard
- first_name: Marc-Michael
  full_name: Meinecke, Marc-Michael
  last_name: Meinecke
- first_name: Heiko G.
  full_name: Kurz, Heiko G.
  last_name: Kurz
- first_name: Christoph
  full_name: Scheytt, Christoph
  id: '37144'
  last_name: Scheytt
  orcid: https://orcid.org/0000-0002-5950-6618
citation:
  ama: 'Kruse S, Bahmanian M, Fard S, Meinecke M-M, Kurz HG, Scheytt C. A Low Phase
    Noise 77 GHz Frequency Synthesizer for Long Range Radar. In: <i>European Radar
    Conference (EuRAD)</i>. ; 2022. doi:<a href="https://doi.org/10.23919/EuRAD54643.2022.9924677">10.23919/EuRAD54643.2022.9924677</a>'
  apa: Kruse, S., Bahmanian, M., Fard, S., Meinecke, M.-M., Kurz, H. G., &#38; Scheytt,
    C. (2022). A Low Phase Noise 77 GHz Frequency Synthesizer for Long Range Radar.
    <i>European Radar Conference (EuRAD)</i>. <a href="https://doi.org/10.23919/EuRAD54643.2022.9924677">https://doi.org/10.23919/EuRAD54643.2022.9924677</a>
  bibtex: '@inproceedings{Kruse_Bahmanian_Fard_Meinecke_Kurz_Scheytt_2022, place={Milan,
    Italy}, title={A Low Phase Noise 77 GHz Frequency Synthesizer for Long Range Radar},
    DOI={<a href="https://doi.org/10.23919/EuRAD54643.2022.9924677">10.23919/EuRAD54643.2022.9924677</a>},
    booktitle={European Radar Conference (EuRAD)}, author={Kruse, Stephan and Bahmanian,
    Meysam and Fard, Saeed and Meinecke, Marc-Michael and Kurz, Heiko G. and Scheytt,
    Christoph}, year={2022} }'
  chicago: Kruse, Stephan, Meysam Bahmanian, Saeed Fard, Marc-Michael Meinecke, Heiko
    G. Kurz, and Christoph Scheytt. “A Low Phase Noise 77 GHz Frequency Synthesizer
    for Long Range Radar.” In <i>European Radar Conference (EuRAD)</i>. Milan, Italy,
    2022. <a href="https://doi.org/10.23919/EuRAD54643.2022.9924677">https://doi.org/10.23919/EuRAD54643.2022.9924677</a>.
  ieee: 'S. Kruse, M. Bahmanian, S. Fard, M.-M. Meinecke, H. G. Kurz, and C. Scheytt,
    “A Low Phase Noise 77 GHz Frequency Synthesizer for Long Range Radar,” 2022, doi:
    <a href="https://doi.org/10.23919/EuRAD54643.2022.9924677">10.23919/EuRAD54643.2022.9924677</a>.'
  mla: Kruse, Stephan, et al. “A Low Phase Noise 77 GHz Frequency Synthesizer for
    Long Range Radar.” <i>European Radar Conference (EuRAD)</i>, 2022, doi:<a href="https://doi.org/10.23919/EuRAD54643.2022.9924677">10.23919/EuRAD54643.2022.9924677</a>.
  short: 'S. Kruse, M. Bahmanian, S. Fard, M.-M. Meinecke, H.G. Kurz, C. Scheytt,
    in: European Radar Conference (EuRAD), Milan, Italy, 2022.'
conference:
  end_date: 2022.09.30
  start_date: 2022.09.28
date_created: 2022-06-08T08:35:46Z
date_updated: 2025-02-25T05:52:35Z
department:
- _id: '58'
doi: 10.23919/EuRAD54643.2022.9924677
language:
- iso: eng
place: Milan, Italy
publication: European Radar Conference (EuRAD)
status: public
title: A Low Phase Noise 77 GHz Frequency Synthesizer for Long Range Radar
type: conference
user_id: '38254'
year: '2022'
...
---
_id: '24023'
abstract:
- lang: eng
  text: This paper presents an ultra-wideband and ultra-low noise frequency synthesizer
    using a mode-locked laser as its reference. The frequency synthesizer can lock
    in the frequency range from 2 GHz to 20 GHz on any harmonic of a mode-locked laser
    optical pulse train. The integrated rms-jitter (1 kHz-100 MHz) of the synthesizer
    is less than 5 fs in the frequency range from 4 GHz to 20 GHz with a typical value
    of 4 fs and a minimum of 3 fs. This is the first reported wideband phase locked
    loop achieving sub-10 fs rms-jitter for offset frequencies larger than 1 kHz.
author:
- first_name: Meysam
  full_name: Bahmanian, Meysam
  id: '69233'
  last_name: Bahmanian
- first_name: Saeed
  full_name: Fard, Saeed
  id: '88494'
  last_name: Fard
- first_name: Bastian
  full_name: Koppelmann, Bastian
  id: '25260'
  last_name: Koppelmann
- first_name: Christoph
  full_name: Scheytt, Christoph
  id: '37144'
  last_name: Scheytt
  orcid: https://orcid.org/0000-0002-5950-6618
citation:
  ama: 'Bahmanian M, Fard S, Koppelmann B, Scheytt C. Wide-Band Frequency Synthesizer
    with Ultra-Low Phase Noise Using an Optical Clock Source. In: <i> 2020 IEEE/MTT-S
    International Microwave Symposium (IMS)</i>. IEEE; 2020. doi:<a href="https://doi.org/10.1109/IMS30576.2020.9224118">10.1109/IMS30576.2020.9224118</a>'
  apa: Bahmanian, M., Fard, S., Koppelmann, B., &#38; Scheytt, C. (2020). Wide-Band
    Frequency Synthesizer with Ultra-Low Phase Noise Using an Optical Clock Source.
    <i> 2020 IEEE/MTT-S International Microwave Symposium (IMS)</i>. <a href="https://doi.org/10.1109/IMS30576.2020.9224118">https://doi.org/10.1109/IMS30576.2020.9224118</a>
  bibtex: '@inproceedings{Bahmanian_Fard_Koppelmann_Scheytt_2020, place={Los Angeles,
    CA, USA, USA}, title={Wide-Band Frequency Synthesizer with Ultra-Low Phase Noise
    Using an Optical Clock Source}, DOI={<a href="https://doi.org/10.1109/IMS30576.2020.9224118">10.1109/IMS30576.2020.9224118</a>},
    booktitle={ 2020 IEEE/MTT-S International Microwave Symposium (IMS)}, publisher={IEEE},
    author={Bahmanian, Meysam and Fard, Saeed and Koppelmann, Bastian and Scheytt,
    Christoph}, year={2020} }'
  chicago: 'Bahmanian, Meysam, Saeed Fard, Bastian Koppelmann, and Christoph Scheytt.
    “Wide-Band Frequency Synthesizer with Ultra-Low Phase Noise Using an Optical Clock
    Source.” In <i> 2020 IEEE/MTT-S International Microwave Symposium (IMS)</i>. Los
    Angeles, CA, USA, USA: IEEE, 2020. <a href="https://doi.org/10.1109/IMS30576.2020.9224118">https://doi.org/10.1109/IMS30576.2020.9224118</a>.'
  ieee: 'M. Bahmanian, S. Fard, B. Koppelmann, and C. Scheytt, “Wide-Band Frequency
    Synthesizer with Ultra-Low Phase Noise Using an Optical Clock Source,” 2020, doi:
    <a href="https://doi.org/10.1109/IMS30576.2020.9224118">10.1109/IMS30576.2020.9224118</a>.'
  mla: Bahmanian, Meysam, et al. “Wide-Band Frequency Synthesizer with Ultra-Low Phase
    Noise Using an Optical Clock Source.” <i> 2020 IEEE/MTT-S International Microwave
    Symposium (IMS)</i>, IEEE, 2020, doi:<a href="https://doi.org/10.1109/IMS30576.2020.9224118">10.1109/IMS30576.2020.9224118</a>.
  short: 'M. Bahmanian, S. Fard, B. Koppelmann, C. Scheytt, in:  2020 IEEE/MTT-S International
    Microwave Symposium (IMS), IEEE, Los Angeles, CA, USA, USA, 2020.'
conference:
  end_date: 2020.08.06
  start_date: 2020.08.04
date_created: 2021-09-09T11:50:14Z
date_updated: 2023-02-01T08:37:34Z
department:
- _id: '58'
- _id: '230'
doi: 10.1109/IMS30576.2020.9224118
language:
- iso: eng
place: Los Angeles, CA, USA, USA
publication: ' 2020 IEEE/MTT-S International Microwave Symposium (IMS)'
publisher: IEEE
related_material:
  link:
  - relation: confirmation
    url: https://ieeexplore.ieee.org/document/9224118
status: public
title: Wide-Band Frequency Synthesizer with Ultra-Low Phase Noise Using an Optical
  Clock Source
type: conference
user_id: '15931'
year: '2020'
...
---
_id: '24051'
abstract:
- lang: eng
  text: Using direct-detection architecture in Radio Frequency (RF) receivers allows
    for ultra-low power dissipation and is often used in Wake-Up receivers. Unfortunately
    direct-detection receivers suffer from high sensitivity to co-channel interference
    which reduces the communication performance and reliability. In this paper, it
    is shown that co-channel interference robustness of direct-detection receivers
    is improved by using Binary Phase Shift Keying (BPSK) Barker code modulated Surface
    Acoustic Wave (SAW) correlator as a prior stage to the RF envelope detector. Replacing
    the band select filter with SAW correlator does not result in higher receiver
    hardware cost. In our receiver, the SAW correlator functions as a passive signal
    processor, providing gain for a BPSK Barker code modulated signal, while suppressing
    in-band interferers. This improves the co-channel interference robustness of the
    direct-detection receiver while preserving its advantage of power efficiency.
    The concept is verified by means of a direct-detection receiver with discrete
    components on an RF PCB including an SAW Barker Code correlator at a center frequency
    of 2.44 GHz fabricated on Lithium Niobate substrate. Measurements with WiFi signals
    demonstrate that the interference robustness is improved by more than 10 dB compared
    to a conventional direct-detection receiver.
author:
- first_name: Saed
  full_name: Abughannam, Saed
  id: '37628'
  last_name: Abughannam
- first_name: Saeed
  full_name: Fard, Saeed
  id: '88494'
  last_name: Fard
- first_name: Christoph
  full_name: Scheytt, Christoph
  id: '37144'
  last_name: Scheytt
  orcid: https://orcid.org/0000-0002-5950-6618
citation:
  ama: 'Abughannam S, Fard S, Scheytt C. Improving Co-Channel Interference Robustness
    In Direct Detection Receivers Using A Surface Acoustic Wave (SAW) Correlator .
    In: <i>Asia-Pacific Microwave Conference (APMC)</i>. ; 2019. doi:<a href="https://doi.org/10.1109/APMC46564.2019.9038186">10.1109/APMC46564.2019.9038186</a>'
  apa: Abughannam, S., Fard, S., &#38; Scheytt, C. (2019). Improving Co-Channel Interference
    Robustness In Direct Detection Receivers Using A Surface Acoustic Wave (SAW) Correlator
    . <i>Asia-Pacific Microwave Conference (APMC)</i>. <a href="https://doi.org/10.1109/APMC46564.2019.9038186">https://doi.org/10.1109/APMC46564.2019.9038186</a>
  bibtex: '@inproceedings{Abughannam_Fard_Scheytt_2019, title={Improving Co-Channel
    Interference Robustness In Direct Detection Receivers Using A Surface Acoustic
    Wave (SAW) Correlator }, DOI={<a href="https://doi.org/10.1109/APMC46564.2019.9038186">10.1109/APMC46564.2019.9038186</a>},
    booktitle={Asia-Pacific Microwave Conference (APMC)}, author={Abughannam, Saed
    and Fard, Saeed and Scheytt, Christoph}, year={2019} }'
  chicago: Abughannam, Saed, Saeed Fard, and Christoph Scheytt. “Improving Co-Channel
    Interference Robustness In Direct Detection Receivers Using A Surface Acoustic
    Wave (SAW) Correlator .” In <i>Asia-Pacific Microwave Conference (APMC)</i>, 2019.
    <a href="https://doi.org/10.1109/APMC46564.2019.9038186">https://doi.org/10.1109/APMC46564.2019.9038186</a>.
  ieee: 'S. Abughannam, S. Fard, and C. Scheytt, “Improving Co-Channel Interference
    Robustness In Direct Detection Receivers Using A Surface Acoustic Wave (SAW) Correlator
    ,”  Singapore , 2019, doi: <a href="https://doi.org/10.1109/APMC46564.2019.9038186">10.1109/APMC46564.2019.9038186</a>.'
  mla: Abughannam, Saed, et al. “Improving Co-Channel Interference Robustness In Direct
    Detection Receivers Using A Surface Acoustic Wave (SAW) Correlator .” <i>Asia-Pacific
    Microwave Conference (APMC)</i>, 2019, doi:<a href="https://doi.org/10.1109/APMC46564.2019.9038186">10.1109/APMC46564.2019.9038186</a>.
  short: 'S. Abughannam, S. Fard, C. Scheytt, in: Asia-Pacific Microwave Conference
    (APMC), 2019.'
conference:
  end_date: 2019.12.13
  location: ' Singapore '
  start_date: 2019.12.10
date_created: 2021-09-09T12:26:05Z
date_updated: 2023-01-31T13:32:19Z
department:
- _id: '58'
doi: 10.1109/APMC46564.2019.9038186
language:
- iso: eng
publication: Asia-Pacific Microwave Conference (APMC)
related_material:
  link:
  - relation: confirmation
    url: https://ieeexplore.ieee.org/document/9038186
status: public
title: 'Improving Co-Channel Interference Robustness In Direct Detection Receivers
  Using A Surface Acoustic Wave (SAW) Correlator '
type: conference
user_id: '15931'
year: '2019'
...