Design Equations for an Interdigitated Directional Coupler (Short Papers)

Ou, Weiming

doi:10.1109/tmtt.1975.1128534

Cited by 72 publications

(29 citation statements)

References 3 publications

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“…A wire-bonded multiconductor transmission line is a four-port device and its input admittance matrix can be found in [29]. By placing open or short-circuits at its diagonal ports, the two-port circuits drawn in the insets of Fig.…”

Section: Theoretical Study Of Open-and Short-circuited Wire-bonded Mtlsmentioning

confidence: 99%

Generalized Analytical Design of Broadband Planar Baluns Based on Wire-Bonded Multiconductor Transmission Lines

Sanchez-Martinez¹,

Márquez-Segura²

2013

PIER

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Abstract-A novel generalized design procedure of broadband planar baluns based on wire-bonded multiconductor transmission lines (MTL) is presented hereby based on analytical equations. The proposed balun consists of two parts. The first one is an in-phase power divider, which equally splits the input power through its two outputs. The later are two MTLs with wire bonding between alternate conductors configured to introduce +90 and −90 degrees phase shift respectively, so that the balanced output signal has a 180 degree phase difference. In that sense, new closed-form design equations in order to calculate the design parameters of both multiconductor elements are obtained. These equations allow the proper dimensions of both MTLs to be computed irrespective of both the number of conductors and the coupling factor, and therefore, to determine the performance of the balun. The design procedure for wire-bonded MTL baluns has been assessed by means of full-wave electromagnetic simulations and by experimental work. In addition, the very good agreement between the theoretical results and measurements makes possible to define a time-saving design methodology.

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Section: Theoretical Study Of Open-and Short-circuited Wire-bonded Mtlsmentioning

confidence: 99%

Generalized Analytical Design of Broadband Planar Baluns Based on Wire-Bonded Multiconductor Transmission Lines

Sanchez-Martinez¹,

Márquez-Segura²

2013

PIER

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“…For quarter-wave long symmetric five-conductor coupled line, the following relations hold for the currents and voltages at the terminal of each conductor line (refer to Fig. 1 (a) for the notation of currents and voltages) [4,5]: where Y mn 's are admittance parameters determined by capacitances and phase velocity (v p ) as follows:…”

Section: Analysis Of Three-way Power Dividermentioning

confidence: 99%

“…1 (b), where C n0 (n = 1, 2, 3) represents self capacitance per unit length between each conductor line and ground, and C 12 and C 23 are mutual capacitances per unit length between two adjacent conductor lines. The mutual capacitance between non-adjacent conductor lines is ignored for simplicity of the analysis, which is a reasonable approximation [5,6]. In order to determine the conditions for impedance matching at port 1, suppose that the power is injected into port 1 and is equally split into each output port.…”

Section: Analysis Of Three-way Power Dividermentioning

confidence: 99%

Compact three-way planar power divider using five-conductor coupled line

Kim

Jeon

Jeong

2011

IEICE Electron. Express

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Abstract:In this paper, a planar three-way power divider with compact size is presented using quarter-wave long five-conductor couple line. It is analytically proved that the proposed structure allows the performance of three-way power dividers. Based on the derived equations and simulation, the three-way power divider is designed and measured at 2.0 GHz. The measurement shows excellent performance with insertion loss of 0.2 dB, and return loss and isolation better than 20 dB at a design frequency.

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“…The L-band amplifier design is based on earlier work by Padin 33 et al, but modified to suite the needs of the CSO. Referring to Figure 9, the input of the balanced amplifier is run through a 3 dB, 90 degree Lange coupler [43][44][45] . Use of a Lange coupler has the advantage of isolating the input port from the isolated (S31) and direct (S21) coupled ports.…”

Section: Balanced 3-6 Ghz Low Noise Amplifier Developmentmentioning

confidence: 99%

<title>Heterodyne instrumentation at the CSO</title>

et al. 1998

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The Caltech Submillimeter observatory (CSO) is one of the World's premier submillimeter telescopes. It consists of a 10.4 meter diameter Leighton radio dish situated in a compact dome near the summit of Mauna Kea, Hawaii. The telescope has been operating under a contract from the National Science Foundation on a regular basis since 1988. For the first time heterodyne Superconducting-Insulating-Superconducting (SIS) receivers with a 1 GHz intermediate frequency (IF) are available for the entire 180 -950 GHz Submillimeter band. To enhance the extra-galactic capabilities of the observatory and to allow interferometry with the upcoming Submillimeter Array (SMA) project, we are actively working towards upgrading all heterodyne instruments with a 3 GHz IF bandwidth. Concurrent to the planned IF upgrade, we are constructing a dual polarization beam switching 345 GHz extra-galactic receiver, also with a 3 GHz IF bandwidth. Ideally, this instrument will give the CSO a factor of 8 improvement in integration time over the current 345 GHz receiver, and will be ideally suited for the study of highly red-shifted extra-galactic sources.

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Design Equations for an Interdigitated Directional Coupler (Short Papers)

Cited by 72 publications

References 3 publications

Generalized Analytical Design of Broadband Planar Baluns Based on Wire-Bonded Multiconductor Transmission Lines

Generalized Analytical Design of Broadband Planar Baluns Based on Wire-Bonded Multiconductor Transmission Lines

Compact three-way planar power divider using five-conductor coupled line

<title>Heterodyne instrumentation at the CSO</title>

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