A Design Procedure for Bandpass Channel Multiplexers Connected at a Common Junction

Rhodes, John David; Alseyab, Saod A.

doi:10.1109/tmtt.1980.1130050

Cited by 9 publications

(3 citation statements)

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“…In the late 1970s, another approach to the synthesis of common junction multiplexers was proposed by Rhodes, Levy and Alseyab [5], [6]. In this approach, the channel filters are initially synthesized as doubly terminated filters using the classical methods for microwave all-pole filters.…”

Section: Pioneering Workmentioning

confidence: 99%

“…This method, however, was too inaccurate for small channel spacing and large numbers of channels, so it was improved in [6], where an iterative procedure was introduced for modifying all of the elements in each low-pass prototype. The performance offered by this procedure was demonstrated to be rather good, even with contiguous multiplexers.…”

Section: Pioneering Workmentioning

confidence: 99%

“…The method, however, was verified with Figu re 3. Return loss of a three-channel multiplexer prototype (channel filters: six poles, 26 dB return loss) [6]. two frequency channels very distant from each other, so little can be said about the achievable performance with closely spaced (or contiguous) channels.…”

Section: Recent Approachesmentioning

confidence: 99%

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Synthesis of Star-Junction Multiplexers

Macchiarella

2011

IEEE Microwave

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Section: Pioneering Workmentioning

confidence: 99%

Section: Pioneering Workmentioning

confidence: 99%

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Synthesis of Star-Junction Multiplexers

Macchiarella

2011

IEEE Microwave

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Combline Filters

Wang¹

2005

Encyclopedia of RF and Microwave Engineering

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The combline filter, which was first introduced by Matthaei in 1963, is one of the most commonly used bandpass filters in many communication systems and other microwave applications. With modern filter synthesis theory, combline filters having elliptic function frequency responses can be realized by using the nonadjacent couplings. In this article, the lumped‐element lowpass filter prototype is first presented. The equations for conversion between the lowpass prototype g values and the impedance/admittance inverters or coupling matrix elements are given. Matthaei's approximated design equations and procedures using Getsinger's design data for rectangular bars, and Cristal's design curves for cylindrical rods are described for design of direct‐coupled combline filters with narrow to moderate bandwidth. A compact tapped‐line input/output coupling configuration is addressed. The general filter topologies are then discussed. The commonly used cascaded triplet and cascaded quadruplet sections for creating more complicated filter structures are presented. Typical combline applications, including multiplexers, dielectric‐filled miniature combline filters, and linear phase or delay filters are presented.

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On the design of a multiplexer with a common junction

Gong

Chen

1990

Circuits Systems and Signal Process

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A Design Procedure for Bandpass Channel Multiplexers Connected at a Common Junction

Cited by 9 publications

References 2 publications

Synthesis of Star-Junction Multiplexers

Synthesis of Star-Junction Multiplexers

Combline Filters

On the design of a multiplexer with a common junction

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