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# 77th ARFTG Microwave Measurement Conference

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Displaying Results 1 - 25 of 31
• ### [Title page]

Publication Year: 2011, Page(s): 1
| PDF (64 KB)
• ### 77th ARFTG conference organizers

Publication Year: 2011, Page(s):1 - 2
| PDF (46 KB)

Publication Year: 2011, Page(s):1 - 4
| PDF (68 KB)
• ### Calibration residual error propagation analysis using conformal mapping

Publication Year: 2011, Page(s):1 - 4
| | PDF (141 KB) | HTML

In this paper a new method is introduced for analyzing the error propagation when calibrating a vector network analyzer (VNA) with non-ideal calibration elements (“standards”). The underlying equations are perceived as a conformal mapping from the calibration element plane to the calculated S-parameter. With this approach a deep insight of the error propagation is possible. The metho... View full abstract»

• ### High speed non-linear device characterization and uniformity investigations at X-band frequencies exploiting behavioral models

Publication Year: 2011, Page(s):1 - 4
Cited by:  Papers (1)
| | PDF (301 KB) | HTML

This paper outlines a non-linear measurement approach suitable for wafer mapping and technology screening applications. It is shown how rapid characterization and uniformity investigations of non-linear devices is possible through the development of an intelligence driven, open-loop active harmonic load pull measurement system, where localized behavioral models are exploited to dramatically improv... View full abstract»

• ### High-speed device characterization using an active load-pull system and waveform engineering postulator

Publication Year: 2011, Page(s):1 - 4
Cited by:  Papers (1)
| | PDF (234 KB) | HTML

This paper presents a methodology that provides rapid estimation of the parameters necessary for the high-speed characterization of transistor devices used in modern microwave power amplifiers. The key in achieving this significant measurement speed improvement is the use of a systematic waveform postulation methodology in combination with an active harmonic load-pull measurement system. The metho... View full abstract»

• ### Design study of a thermocouple power sensor as a monolithic fin-line

Publication Year: 2011, Page(s):1 - 3
| | PDF (354 KB) | HTML

Making traceable power measurements above 110 GHz using current measurement technologies is challenging. We investigate a design of power sensor consisting of a thermocouple-based integrated circuit (IC) mounted as a finline component in WR-6 waveguide. The design is original in that it contains an antenna, terminating resistor and thermocouples on-chip. We detail the design and report results fro... View full abstract»

• ### Characterizations of asymmetric fixtures with a two-gate approach

Publication Year: 2011, Page(s):1 - 6
Cited by:  Papers (5)  |  Patents (2)
| | PDF (288 KB) | HTML

A technique for extracting asymmetric fixtures from a through standard and de-embedding the fixture effects from the composite measurement of DUT and fixture combination has been proposed. The technique consists of: (1) building a through standard which is the cascaded combination of the two fixtures. The two fixtures can be asymmetric in return loss but are symmetric in insertion loss and have th... View full abstract»

• ### Traceable GMSK vector modulation error based on analog PM

Publication Year: 2011, Page(s):1 - 12
Cited by:  Papers (4)
| | PDF (202 KB) | HTML

The paper addresses the problems about calibration of vector modulation error: first, signal generator calibrates VSA and vice versa, it forms a closed-loop, so it lacks traceability. Second, signal setting of vector modulation error has always been neglected in the VSA calibration This has exposed the shortcomings of the system level verification of VSA. To solve the problems for the GMSK, we pro... View full abstract»

• ### Modification of waveguide flange design for millimeter and submillimeter-wave measurements

Publication Year: 2011, Page(s):1 - 7
Cited by:  Papers (11)
| | PDF (809 KB) | HTML

Waveguide flange design makes major impact to measurement reproducibility in the range of millimeter and sub-millimeter-wave frequencies, e.g. above 110 GHz. Original concept of flange design, so-call “Oshima” flange, was established in the early 2000s. Its flange alignment is ensured using ring with tight tolerance, however, it is not compatible to MIL-DTL-3922/67C (UG-387) flange. ... View full abstract»

• ### Evaluation of complex residual error in vector network analyzer measurement system in the range of millimeter-wave and submillimeter-wave frequencies

Publication Year: 2011, Page(s):1 - 7
Cited by:  Papers (1)
| | PDF (972 KB) | HTML

This paper describes a technique for the evaluation of complex residual errors in coaxial and waveguide vector network analyzer (VNA) measurements in the range of microwave, millimeter and submillimeter wave frequencies. The technique is based on reference values of scattering parameters for transmission line standards consisting of coaxial air dielectric lines and waveguide standard sections. Ref... View full abstract»

• ### Contactless distance measurement method

Publication Year: 2011, Page(s):1 - 4
Cited by:  Papers (1)
| | PDF (244 KB) | HTML

A new method capable of contactless distance measurement with high resolution has been proposed. The method is intended to measure distance differences smaller than one half of a wavelength. First experimental results are reported. The method is based on precise phase evaluation of signal reflected by the surface whose distance is measured. This is achieved using interference between the reflected... View full abstract»

• ### MOS-16: A new method for in-fixture calibration and fixture characterization

Publication Year: 2011, Page(s):1 - 7
Cited by:  Papers (1)  |  Patents (2)
| | PDF (239 KB) | HTML

The calibration of test fixtures or the estimation of their performance are well known tasks. In the case of fixtures with variable length, there are some established methods to de-embed the DUT (Device Under Test). The calibration or evaluation of a fixture with a fixed length, like a socket or a probe-card offers less possibilities. This contribution presents a novel calibration procedure, capab... View full abstract»

• ### Wideband relative permittivity extraction based on CPW phase constant measurements

Publication Year: 2011, Page(s):1 - 3
Cited by:  Papers (5)
| | PDF (198 KB) | HTML

We introduce a semi-numerical method to extract the relative permittivity of typical microwave substrate materials from on-wafer scattering-parameter measurements of coplanar waveguides of different lengths. Despite its numerical nature, the method is robust and converges rapidly. We demonstrate the accuracy of the method using structures built on four different substrates in a frequency range up ... View full abstract»

• ### New calibration technique for coaxial network analyzer reflection measurements at millimeter-wave frequencies

Publication Year: 2011, Page(s):1 - 6
| | PDF (1556 KB) | HTML

This paper describes the development of a new calibration technique for Vector Network Analyzers (VNA) operating in coaxial lines at millimeter-wave frequencies. The technique utilizes a new design of primary reference standard - the air-dielectric open-circuit. These standards are mechanically robust and provide a simple route to achieving VNA measurements that are traceable to the International ... View full abstract»

• ### Measurements of micromachined waveguide devices at WR-3 band using a T/R-T module based network analyzer

Publication Year: 2011, Page(s):1 - 4
Cited by:  Papers (1)
| | PDF (231 KB) | HTML

Making accurate and reliable measurements at WR-3 band is challenging. This is made more so when a T/R-T based test configuration is used. This paper compared the calibrations and measurements between a T/R-T and a full T/R-T/R configuration. The shortfall of load matching in the T/R-T configuration has been identified and described using signal flow analyses. The effects of both the device perfor... View full abstract»

• ### A simple procedure for characterizing line-stretcher phase shifters

Publication Year: 2011, Page(s):1 - 4
| | PDF (199 KB) | HTML

A novel procedure to characterize coaxial line-stretcher phase shifter based on the two-line method is presented in this work. Intrinsic losses and differential phase shift are determined using S-parameters data measured with an uncalibrated vector network analyzer. To validate the method, different trombone-type line-stretcher phase shifters are used with arbitrary connectors. View full abstract»

• ### Comparison of different methods for calculating uncertainties in the electrical properties of planar waveguides

Publication Year: 2011, Page(s):1 - 5
| | PDF (150 KB) | HTML

In this paper different approaches to calculate uncertainties in the wideband electrical properties of planar waveguides such as coplanar waveguides (CPW) and microstrip lines (MSL) are compared against each other. The linear propagation of uncertainties (LPU) approach is demonstrated to give comparable results to the more general Monte Carlo procedure. The influence of higher order terms in the p... View full abstract»

• ### Second-order waveguide calibration of a one-port vector network analyzer

Publication Year: 2011, Page(s):1 - 3
Cited by:  Papers (2)
| | PDF (338 KB) | HTML

A method for second-order system correction of a calibrated vector network analyzer (VNA) is described. It is based on a single reflection measurement of an electrically long high precision waveguide section terminated by a flush short. The complex-valued residual error parameters, i.e. residual directivity, residual source match, and residual reflection tracking of a pre-calibrated VNA are determ... View full abstract»

• ### An improved stability broadband/mm-wave VNA structure

Publication Year: 2011, Page(s):1 - 5
Cited by:  Papers (1)
| | PDF (185 KB) | HTML

In the past, the stability and quality of broadband mm-wave network analysis measurements have sometimes been challenges because of required high frequency multiplexing schemes, physically large and inhomogeneous measurement structures and complex receiver chains. A newer structure for this class of VNA measurements will be presented where a broadband, miniature front-end receiver is used for more... View full abstract»

• ### Adapter evaluation using three-adapter technique with ‘Thru-Line’ two-tier calibration in one-port measurements

Publication Year: 2011, Page(s):1 - 7
| | PDF (106 KB) | HTML

This paper presents a method using a two-tier calibration with Thru-Line' for evaluating the S-parameters of adapters based on three-adapter technique. It uses a one-port VNA (Vector Network Analyzer) to avoid cable movements with OSL' (Open-Short-Load) calibration standards, which are widely used for one-port measurements, being used at the first and second calibrations. Formulas are also deriv... View full abstract»

• ### Measurement and evaluation of the WR-28 calorimeter

Publication Year: 2011, Page(s):1 - 3
| | PDF (172 KB) | HTML

We have designed and measured WR28 calorimeter which will be used as national primary power standard frequency range is 26.5-40GHz. The detail of design and measurement results was published in 2010CPEM and 74th ARFTG[1][2]. At present, the effective efficiency of WR-28 calorimeter was calculated and some uncertainty evaluations were done. View full abstract»

• ### An automatic measurement setup for outer diameter of inner conductor in coaxial air lines

Publication Year: 2011, Page(s):1 - 3
| | PDF (221 KB) | HTML

An automatic measurement setup for measuring outer diameter of the inner conductor (ODIC) of coaxial air lines is introduced. The setup is used to measure ODIC of air lines with precision connectors, including N, 7mm, 3.5mm, 2.92mm, 2.4mm, 1.85mm, 1.0mm. Multiple needle gauges are used to achieve measurement uncertainties better than 0.3μm. As an example, the measurement results of 2.92 mm ... View full abstract»

• ### Fabrication of calibration standards for the millimeter- and sub-millimeter wavelength ring-centered waveguide flange

Publication Year: 2011, Page(s):1 - 4
Cited by:  Papers (3)
| | PDF (1009 KB) | HTML

This paper introduces a new fabrication approach for calibration shims with ring-centered waveguide flanges using KMPR based microfabrication. The high precision of the ring-centered flange imposes more strict restrictions on the dimensions of corresponding waveguide shims, making conventional machining techniques less competitive. Taking advantage of the KMPR microfabrication process, a set of ac... View full abstract»

• ### attoF MOS varactor RF measurement VNA coupled with interferometer

Publication Year: 2011, Page(s):1 - 2
Cited by:  Papers (2)
| | PDF (160 KB) | HTML

Nowadays with capabilities offered by advanced silicon technologies both for design above 60GHz and for high performance Digitally Controlled Oscillator, the use of sub fF varactor is mandatory. One of the challenge to develop this device is to be able to characterize it accurately for process optimization and modeling. In high and above all low frequency range, this type of measurement has to fac... View full abstract»