Topic
Frequency extender
About: Frequency extender is a research topic. Over the lifetime, 5 publications have been published within this topic receiving 2 citations.
Papers
18 Jan 2021
TL;DR: In this article, a linearity measurement method for 6G Rx, which uses only one continuous wave transmission frequency extender, is proposed where the RF input signal of frequency extenders is narrowband amplitude modulated (AM), generating side tones around continuous wave carrier.
Abstract: The future sixth-generation (6G) is envisioned to support data rates up to 1 Tbps. The operational frequencies of the 6G system will be expanded towards the sub-mmW and THz regions. The 6G systems will utilize directive beams, as well, to compensate increased signal attenuation between link ends. The linearity of a receiver (Rx) is one of the most significant parameters for any radio system. Traditional Rx linearity measurement relies on a two-tone measurement technique, which requires two dedicated RF signals and combining them to the test signal. The generation of two independent RF signals at a 300 GHz frequency band leads to a costly and bulky solution. This paper proposes a linearity measurement method for 6G Rx, which uses only one continuous wave transmission frequency extender. A method is proposed where the RF input signal of frequency extender is narrowband amplitude modulated (AM), generating side tones around continuous wave carrier. The carrier frequency and first side tones are used as test signals, and the linearity test is like a traditional two-tone test with unequal signals. It is shown that the carrier level can be modified by back-offing the RF input power in the frequency extender input. By varying the AM modulation index, the side tones’ levels can be varied, enabling the sweep of the tone input power to perform Rx linearity measurements.
6 citations
1 Sep 2017
TL;DR: In this article, the potential of the Low THz spectrum for high resolution imaging applications such as automotive radar is described, which requires compact and portable equipment which may be achieved by extending the operation of current battery powered vector network analyzers.
Abstract: The potential of the Low THz spectrum for high resolution imaging applications such as automotive radar is described. Experiments require compact and portable equipment which may be achieved by extending the operation of current battery powered vector network analyzers. The development of a novel hybrid 670 GHz VNA based frequency extender is described including instrument performance data.
2 citations
Patent•
14 Nov 2019
TL;DR: In this paper, a wideband signal source consisting of a voltage controlled oscillator (VCO), a first buffer and a programmable frequency extender is presented, where the VCO outputs a signal with at least N:1 frequency tuning ratio, with N being an integer or noninteger number larger than 1.
Abstract: Present invention relate to a wideband signal source. The wideband signal source comprises a voltage controlled oscillator (VCO), a first buffer and a programmable frequency extender. The VCO outputs a signal with at least N:1 frequency tuning ratio, with N being an integer or a non-integer number larger than 1. The frequency extender receives the signal via the buffer to generate a final output, which has a wider frequency band than the signal. The buffer isolates the final output from interfering VCO for VCO operation stability. The frequency extender comprises at least a 1/N frequency divider, which matches the N:1 frequency tuning ratio of the signal, such that the final output has a gapless frequency band wider than the VCO output signal.
Patent•
17 May 2017
TL;DR: In this article, a multiplexer based frequency extender comprising a preamplifier to receive a RF input signal and output a pre-amplified RF signal, at least one frequency multiplier or a frequency divider, and a multiple-xer comprises multiple differential pairs, each differential pair comprises a corresponding bias current control circuit that switches ON or OFF a bias current flowing through a corresponding differential pair.
Abstract: The disclosure discloses a multiplexer based frequency extender comprising a preamplifier to receive a RF input signal and output a pre-amplified RF signal, at least one frequency multiplier or at least one frequency divider, and a multiplexer. The multiplexer comprises multiple differential pairs, each differential pair comprises a corresponding bias current control circuit that switches ON or OFF a bias current flowing through a corresponding differential pair. The at least one frequency multiplier or the at least one frequency divider receives the pre-amplified RF signal and outputs a frequency-multiplied RF signal or a frequency-divided signal. The multiplexer couples to receive the pre-amplified RF signal, the frequency-multiplied RF signal and/or the frequency-divided signal, the multiplexer selects a signal from the received signals and outputs based on the selected signal a multiplexer output signal.
8 Sep 1997
TL;DR: In this article, a new principle of a mm-wave frequency extender, suitable for commercial available network analyzers, is presented and the main features of the modified network analyzer are discussed.
Abstract: A new principle of a mm-wave frequency extender, suitable for commercial available network analyzers, is presented and the main features of the modified network analyzer are discussed. A system realization in W-band is described. The system performance is proved by measurements in the frequency range 89-100 GHz.
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2019 | 1 |
| 2017 | 2 |
| 1997 | 1 |