A 290-310 GHz Single Sideband Mixer with Integrated Waveguide Filters

Cheng Guo; Xiaobang Shang; Michael J. Lancaster; Jun Xu; Jeffrey Powell; Hui Wang; Kai Parow-Souchon; Manju Henry; Colin Vegas; Byron Alderman; Peter G. Huggard

doi:10.1109/TTHZ.2018.2841771

A 290-310 GHz Single Sideband Mixer with Integrated Waveguide Filters

Cheng Guo, Xiaobang Shang, Michael J. Lancaster, Jun Xu, Jeffrey Powell, Hui Wang, Kai Parow-Souchon, Manju Henry, Colin Vegas, Byron Alderman, Peter G. Huggard

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

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Abstract

A 290-310 GHz Schottky diode based sub-harmonic mixer with integrated, low loss, impedance matching waveguide cavity filters is presented in this paper. This mixer was designed for use in a 300 GHz communication system with a 20 GHz intermediate frequency (IF) band centred at 15 GHz. Image rejection of the 260-280 GHz lower sideband (LSB), as well as impedance matching, was achieved using an integrated 3rd order filter in the RF waveguide. The conventional coupling matrix was used to design the filter even though the impedance presented to the RF port was complex and frequency dependent. The mixer was measured to have: (1) Single sideband (SSB) conversion loss of 9-10 dB across the upper sideband (USB), with a mixer noise temperature of 2000-2600 K. (2) A return loss at the RF port better than 12 dB, with three filter reflection zeroes (poles) distinguishable. (3) A sideband rejection ratio (SBR) from 13 to 25 dB, demonstrating the RF filter's excellent performance in terms of impedance matching and filtering.

Original language	English
Pages (from-to)	446-454
Number of pages	9
Journal	IEEE Transactions on Terahertz Science and Technology
Volume	8
Issue number	4
Early online date	1 Jun 2018
DOIs	https://doi.org/10.1109/TTHZ.2018.2841771
Publication status	Published - Jul 2018

Keywords

Amplitude modulation
Band-pass filters
Image rejection
Matched filters
Mixers
Planar Schottky diode
Radio frequency
Resonator filters
Schottky diodes
Subharmonic mixer
Waveguide filters

ASJC Scopus subject areas

Radiation
Electrical and Electronic Engineering

Access to Document

10.1109/TTHZ.2018.2841771Licence: Creative Commons: Attribution (CC BY)

Guo_et_al_A_290-310_GHZ_IEEE_TransactionsFinal published version, 1.39 MBLicence: Creative Commons: Attribution (CC BY)

https://ieeexplore.ieee.org/document/8370697/Licence: Creative Commons: Attribution (CC BY)

Micromachined Circuits For Terahertz Communications
Lancaster, M. (Principal Investigator), Constantinou, C. (Co-Investigator), Dimov, S. (Co-Investigator), Feresidis, A. (Co-Investigator), Gardner, P. (Co-Investigator), Cherniakov, M. (Co-Investigator), Gashinova, M. (Co-Investigator) & Huang, F. (Co-Investigator)
Engineering & Physical Science Research Council
22/06/15 → 22/12/18
Project: Research

Cite this

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title = "A 290-310 GHz Single Sideband Mixer with Integrated Waveguide Filters",

abstract = "A 290-310 GHz Schottky diode based sub-harmonic mixer with integrated, low loss, impedance matching waveguide cavity filters is presented in this paper. This mixer was designed for use in a 300 GHz communication system with a 20 GHz intermediate frequency (IF) band centred at 15 GHz. Image rejection of the 260-280 GHz lower sideband (LSB), as well as impedance matching, was achieved using an integrated 3rd order filter in the RF waveguide. The conventional coupling matrix was used to design the filter even though the impedance presented to the RF port was complex and frequency dependent. The mixer was measured to have: (1) Single sideband (SSB) conversion loss of 9-10 dB across the upper sideband (USB), with a mixer noise temperature of 2000-2600 K. (2) A return loss at the RF port better than 12 dB, with three filter reflection zeroes (poles) distinguishable. (3) A sideband rejection ratio (SBR) from 13 to 25 dB, demonstrating the RF filter's excellent performance in terms of impedance matching and filtering.",

keywords = "Amplitude modulation, Band-pass filters, Image rejection, Matched filters, Mixers, Planar Schottky diode, Radio frequency, Resonator filters, Schottky diodes, Subharmonic mixer, Waveguide filters",

author = "Cheng Guo and Xiaobang Shang and Lancaster, {Michael J.} and Jun Xu and Jeffrey Powell and Hui Wang and Kai Parow-Souchon and Manju Henry and Colin Vegas and Byron Alderman and Huggard, {Peter G.}",

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AU - Wang, Hui

AU - Parow-Souchon, Kai

AU - Henry, Manju

AU - Vegas, Colin

AU - Alderman, Byron

AU - Huggard, Peter G.

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AB - A 290-310 GHz Schottky diode based sub-harmonic mixer with integrated, low loss, impedance matching waveguide cavity filters is presented in this paper. This mixer was designed for use in a 300 GHz communication system with a 20 GHz intermediate frequency (IF) band centred at 15 GHz. Image rejection of the 260-280 GHz lower sideband (LSB), as well as impedance matching, was achieved using an integrated 3rd order filter in the RF waveguide. The conventional coupling matrix was used to design the filter even though the impedance presented to the RF port was complex and frequency dependent. The mixer was measured to have: (1) Single sideband (SSB) conversion loss of 9-10 dB across the upper sideband (USB), with a mixer noise temperature of 2000-2600 K. (2) A return loss at the RF port better than 12 dB, with three filter reflection zeroes (poles) distinguishable. (3) A sideband rejection ratio (SBR) from 13 to 25 dB, demonstrating the RF filter's excellent performance in terms of impedance matching and filtering.

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KW - Matched filters

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A 290-310 GHz Single Sideband Mixer with Integrated Waveguide Filters

Abstract

Keywords

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Micromachined Circuits For Terahertz Communications

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