A 38 to 44 GHZ Sub-Harmonic Balanced HBT Mixer With Integrated Miniature Spiral Type Marchand Balun

Johansen, Tom K.; Krozer, Viktor

doi:10.2528/pier12110207

Cited by 6 publications

(9 citation statements)

References 16 publications

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“…The Marchand balun is chosen owing to its broadband properties. The lumped element implementation allows compact size and straightforward design procedure for good phase and magnitude balance [7, 8]. The lumped element implementation uses offset broadside coupled spiral inductors together with capacitors to realize the coupled transmission lines, normally used in Marchand baluns.…”

Section: Designmentioning

confidence: 99%

“…For the even-mode circuit, shown in Fig. 2, the requirement for the transmission coefficient being zero is the same as the Y -parameter Y 21e become zero [8]. Thus, for (1) to be fulfilled we have This is a nice property as it shows that by careful selection of C m it is possible to obtain good phase and magnitude match even though the coupled spiral is not as specified above.…”

Section: Designmentioning

confidence: 99%

“…The coupled broadside spiral inductor design is limited in the realization, as it is often not possible to obtain values as dictated by equations (6)- (8). Further investigation of the structure is therefore required to reveal possible solutions or trade offs for this problem.…”

Section: A) Marchand Balunmentioning

confidence: 99%

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Design of a broadband passive X-band double-balanced mixer in SiGe HBT technology

Michaelsen

Johansen

Tamborg³

et al. 2014

Int. J. Microw. Wireless Technol.

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In this paper, a passive double-balanced mixer in SiGe HBT technology is presented. Owing to lack of suitable passive mixing elements in the technology, the mixing elements are formed by diode-connected HBTs. The mixer uses lumped element Marchand baluns on both the local oscillator (LO) and the radio frequency (RF) port. A break out of the Marchand balun is measured. This demonstrates good phase and magnitude match of 0.7° and 0.11 dB, respectively. The Marchand baluns are broadband with a measured 3 dB bandwidth of 6.4 GHz, while still having a magnitude imbalance better than 0.4 dB and a phase imbalance better than 5°. Unfortunately with a rather high loss of 2.5 dB, mainly due to the low Q-factor of the inductors used. The mixer is optimized for use in doppler radars and is highly linear with a 1 dB compression point above 12 dBm IIP2of 66 dBm. The conversion gain at the center frequency of 8.5 GHz is −9.8 dB at an LO drive level of 15 dBm. The whole mixer is very broadband with 3 dB bandwidth from 7 to 12 GHz covering the entire X-band. The LO–IF, RF–IF, and RF–LO isolation is better than 46, 36, and 36 dB, respectively, in the entire band of operation.

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Section: Designmentioning

confidence: 99%

Section: Designmentioning

confidence: 99%

See 1 more Smart Citation

Design of a broadband passive X-band double-balanced mixer in SiGe HBT technology

Michaelsen

Johansen

Tamborg³

et al. 2014

Int. J. Microw. Wireless Technol.

View full text Add to dashboard Cite

show abstract

“…Another advantage is that the wide frequency gap between the RF and LO signals simplifies the LO and RF separation. Frequency mixer circuits, either in microstrip [11][12][13] or in monolithic technology [14][15][16][17][18], generally use transistors [19][20][21][22][23][24], or diodes [25][26][27][28], in order to generate the desired nonlinear behavior.…”

Section: Introductionmentioning

confidence: 99%

Millimeter Wave Subharmonic Mixer Implementation Using Graphene Film Coating

Hotopan¹,

Hoeye²,

Vázquez³

et al. 2013

PIER

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In this work, a subharmonic frequency mixer for millimeter wave applications has been designed. The mixing and multiplication phenomena are simultaneously achieved via a nonlinear component consisting in a microstrip line gap covered by a graphene film coating. The circuit structure is made up of various filters, which have been optimized to ensure high port-to-port isolation. The nonlinear behavior of the subharmonic frequency mixer has been experimentally evaluated within the 39-40.5 GHz RF frequency band. The frequency downconversion is achieved by mixing the RF signal with the second harmonic component of a 17.9 GHz LO signal. Conversion losses are minimized by generating a return path for IF, through the use of a quarter wavelength open-ended stub.

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“…Millimeter-wave and submillimeter-wave frequency multipliers [1][2][3][4][5][6] and mixers [7][8][9][10][11][12][13][14] based on planar Schottky diodes are widely used for atmosphere and space detection. The multipliers are usually driven by an oscillator [15][16][17][18] or a phase-locked millimeter-wave source.…”

Section: Introductionmentioning

confidence: 99%

A New Scheme for the Design of Balanced Frequency Tripler With Schottky Diodes

Guo¹,

Xu²,

Qian³

2013

PIER

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Abstract-We propose a balanced frequency tripler scheme for millimeter-wave and submillimeter-wave application, in which doublesided suspended stripline is adopted. Two arms of Schottky diodes are mounted on the upper side of the substrate, and the other two arms of diodes are mounted on the lower side. The diodes are DC biased without bypass chip capacitor, which is essential in the common used balanced tripler scheme. Furthermore, the numbers of the diodes are doubled as there are only two arms of diodes in the common balanced tripler scheme, and this will double the power handling capability of the tripler. A W-band frequency tripler is designed according to the proposed scheme with commercial Schottky Varistors. The output power is from 2.9 to 5.7 dBm at the frequencies from 89.7 to 94.8 GHz, with the conversion efficiency from 1.95% ∼ 3.7%.

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A 38 to 44 GHZ Sub-Harmonic Balanced HBT Mixer With Integrated Miniature Spiral Type Marchand Balun

Cited by 6 publications

References 16 publications

Design of a broadband passive X-band double-balanced mixer in SiGe HBT technology

Design of a broadband passive X-band double-balanced mixer in SiGe HBT technology

Millimeter Wave Subharmonic Mixer Implementation Using Graphene Film Coating

A New Scheme for the Design of Balanced Frequency Tripler With Schottky Diodes

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