Robust Sub-harmonic Mixer at 340 GHz Using Intrinsic Resonances of Hammer-Head Filter and Improved Diode Model

Wang, Cheng; He, Yuan; Lü, Bin; Jiang, Jun; Li, Miao; Deng, X. H.; Xiong, Yujie; Zhang, Jian

doi:10.1007/s10762-017-0436-4

Cited by 16 publications

(20 citation statements)

References 17 publications

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“…1. At first, it requires the design of some passive functional units, such as LO LPF, IF LPF and the likes [24]- [28]. In addition, those passive functional units can be directly applied for other sub-terahertz circuits.…”

Section: Introductionmentioning

confidence: 99%

A 200–240 GHz Sub-Harmonic Mixer Based on Half-Subdivision and Half-Global Design Method

Cui

Zhang

et al. 2020

IEEE Access

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For the terahertz harmonic mixer, a design model based on Half-Subdivision and Half-Global Design Method (HS-HGDM) with a single functional unit is proposed. The single functional unit circuit of the mixer, such as LO or IF Low Pass Filter (LPF), is designed by Subdivision Design Method (SDM), and the rest circuits of the mixer are designed by Global Design Method (GDM). The harmonic mixer based on this model is characterized by simple circuit structure, low conversion loss, small circuit size and high stability. In this paper, an improved Compact Suspended Micro-strip Resonators (CSMRs) filter is developed for the IF part of sub-harmonic mixer. The remaining circuits consist of some basic transmission units, such as the High-Z Low-Z impedance Transmission Lines (H-Z L-Z TLs) applied for main circuit, and full/reduced height WR4.3/WR8 applied for providing RF/LO signal. In RF frequency range 200-240 GHz, a Single Sideband (SSB) conversion loss of 7.36±0.76 dB operating at IF frequency 1.8 GHz, and a Double Sideband (DSB) noise temperature below 1034 K with the LO power of 2-5 mW and the LO frequency of 107 GHz were achieved. This broadband sub-harmonic mixer operates at room temperature, which makes it applicable to sub-millimeter wave or terahertz wireless communication systems and imaging inspection systems. INDEX TERMS Terahertz sub-harmonic mixer, CSMRs filter, wireless communication systems.

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Section: Introductionmentioning

confidence: 99%

A 200–240 GHz Sub-Harmonic Mixer Based on Half-Subdivision and Half-Global Design Method

Cui

Zhang

et al. 2020

IEEE Access

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“…[6][7][8][9][10][11][12][13] The regular single-stage reduced matching process is that the same size chamfering or filleting is performed on both sides of LO waveguide and RF waveguide. [6][7][8][9] The key of terahertz harmonically mixers using regular SDM is required to design function units individually, including Direct Current (DC) grounded in RF port, RF/LO reducing waveguide, LO Low-Pass Filter (LPF), IF LPF, and so on. The high-low impedance filters, hammerhead filter, compact suspended micro-strip resonators (CSMRs) filters, and their improved structures are usually adopted as the LO/IF low-pass filter of the terahertz subharmonic mixer.…”

Section: Introductionmentioning

confidence: 99%

“…Terahertz mixer is one of the core components of terahertz solid transceiver system. A single‐stage reduced matching technology and Subdivision Design Method (SDM) are generally used to design terahertz harmonically mixers . The regular single‐stage reduced matching process is that the same size chamfering or filleting is performed on both sides of LO waveguide and RF waveguide .…”

Section: Introductionmentioning

confidence: 99%

“…A single‐stage reduced matching technology and Subdivision Design Method (SDM) are generally used to design terahertz harmonically mixers . The regular single‐stage reduced matching process is that the same size chamfering or filleting is performed on both sides of LO waveguide and RF waveguide . The key of terahertz harmonically mixers using regular SDM is required to design function units individually, including Direct Current (DC) grounded in RF port, RF/LO reducing waveguide, LO Low‐Pass Filter (LPF), IF LPF, and so on.…”

Section: Introductionmentioning

confidence: 99%

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Design of 199 to 238 GHz broadband subharmonic mixer combining two‐stage reduced matching technology with Global Design Method

Cui

Zhang

Liu

et al. 2019

Int J Numerical Modelling

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Terahertz technology is widely used in communications, radar, electronic countermeasures, precision guidance, and biomedical applications. In this paper, a 199 to 238 GHz broadband subharmonic mixer combining two-stage reduced matching technology with Global Design Method is designed, fabricated, measured, and analysed successfully. Compared with traditional single-stage reduced matching technology and Subdivision Design Method, the two-stage reduced matching technology is applied for terahertz mixer's Radio Frequency (RF) waveguide and Local Frequency (LO) waveguide, while the LO/Intermediate Frequency (IF) Low-Pass Filter of terahertz mixers is not necessary to design separately. The core of Global Design Method is that the whole mixer circuit, including LO/RF waveguide, is divided into basic transmission units, which match and filter circuit simultaneously with more optimization variables. When LO driven power is 3.1 mW, LO frequency is 108, 112 GHz. The measured singlesideband (SSB) conversion loss ranges from 7.84 to 12.4 dB with RF frequency 199 to 238 GHz. The measured double-sideband (DSB) noise temperature varies between 580 and 1059 K with LO driven power 2 to 5 mW. The multi-stage reduced matching technology and Global Design Method is general, effective, accurate, can reduce circuit size, simplify circuit structure, broaden frequency band, and can be applied for terahertz harmonically mixers.

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“…Traditional Schottky mixers use flip-chip diodes in an inverted suspended stripline circuit topology [5]- [8] which prohibits post assembly visual inspection required for reliability qualification in space applications. Furthermore, the inverted circuit must be glued to obtain a dc-ground which introduces mechanical stress and thereby degrading the reliability further as pointed out in [6]. Apart from the mixer implementation the receiver packaging is crucial in order to obtain key receiver performance in terms of stability and local oscillator (LO) spurious generation.…”

Section: Introductionmentioning

confidence: 99%

A 183-GHz Schottky Diode Receiver with 4 dB Noise Figure

Anderberg

Sobis

Drakinskiy

et al. 2019

2019 IEEE MTT-S International Microwave Symposium (IMS)

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Atmospheric science based on space-borne millimeter wave measurements require reliable and state-of-theart receivers. In particular, the water vapor line at 183.3 GHz motivates the development of sensitive mixers at this frequency. Traditional assembly techniques employed in the production of Schottky diode receivers involve flip-chip mounting and soldering of discrete dies, which prohibit the implementation of reliable and repeatable production processes. In this work, we present a subharmonic 183 GHz mixer implementing a repeatable assembly method using beamlead Schottky diodes. The mixer was integrated with a InP HEMT MMIC low noise intermediate frequency amplifier resulting in a record-low receiver noise temperature of 450 K at 1 mW of local oscillator power measured at room-temperature. The measured Allan time was 10 s and the third order local oscillator spurious power was less than-60 dBm. The proposed assembly method is of particular importance for space-borne missions but also applicable to a wide range of terahertz applications.

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Robust Sub-harmonic Mixer at 340 GHz Using Intrinsic Resonances of Hammer-Head Filter and Improved Diode Model

Cited by 16 publications

References 17 publications

A 200–240 GHz Sub-Harmonic Mixer Based on Half-Subdivision and Half-Global Design Method

A 200–240 GHz Sub-Harmonic Mixer Based on Half-Subdivision and Half-Global Design Method

Design of 199 to 238 GHz broadband subharmonic mixer combining two‐stage reduced matching technology with Global Design Method

A 183-GHz Schottky Diode Receiver with 4 dB Noise Figure

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