Four-port microstrip diplexer for RF interference rejection

Konpang, Jessada; Sandhu, Muhammad Yameen; Somjit, Nutapong; Hunter, I.C.

doi:10.1109/ecticon.2016.7561364

Cited by 3 publications

(6 citation statements)

References 7 publications

(9 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High signal isolation between the Tx and Rx modules is achievable by only using one resonator filter topology. Moreover, the four-port microstrip dual-mode diplexer still reduces overall signal losses with the same or better isolation compared to the existing state-of-the art diplexers [13].…”

Section: Design Of Four-port Dual-mode Diplexermentioning

confidence: 99%

“…To compare the size of the proposed four-port dualmode diplexer, a conventional four-port diplexer [13] is simulated by using a single-mode microstrip open-loop resonator. e total number of degrees required in a singlemode bandpass filter can be reduced by half for dual-mode resonators.…”

Section: Design Of Four-port Dual-mode Diplexermentioning

confidence: 99%

“…As a result of a very complicated filter design and fabrication process, the insertion loss of the filter and diplexer can increase. Moreover, an alternative technique to design diplexer with low cost, high signal isolation, and ease of fabrication process was introduced by using four-port network [12,13]. e realized microstrip filter prototype with small circuit size can be achieved by this technique.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Four-Port Dual-Mode Diplexer with High Signal Isolation

Konpang

Wattikornsirikul

2020

Active and Passive Electronic Components

Self Cite

View full text Add to dashboard Cite

An ease of four-port dual-mode diplexer with high signal isolation is presented. A compact dual-mode diplexer with high signal isolation between the Rx and Tx modules is achievable by only using one resonator filter topology. Two back-to-back dual-mode diplexers have a 180° phase shift in one branch. The high isolation can be achieved by amplitude and phase cancellation technique. The delayed transmission line can be easily achieved by the phase shifter. The simulated and measured four-port dual-mode diplexers are designed at the centre frequency of Rx/Tx at 1.95 GHz and 2.14 GHz, respectively. The measured results of Rx/Tx dual-mode diplexer devices are presented with 47.1 dB Rx/Tx isolation. This four-port dual-mode diplexer achieves the isolation (S32) of more than 24.1 dB when compared with the conventional three-port dual-mode diplexer structure.

show abstract

Section: Design Of Four-port Dual-mode Diplexermentioning

confidence: 99%

Section: Design Of Four-port Dual-mode Diplexermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Four-Port Dual-Mode Diplexer with High Signal Isolation

Konpang

Wattikornsirikul

2020

Active and Passive Electronic Components

Self Cite

View full text Add to dashboard Cite

show abstract

“…To compare the size of the proposed four-port dual-mode diplexer, a conventional four-port diplexer [13] is simulated by using a single-mode microstrip open loop resonator. The total number of degrees required in a single-mode bandpass filter can be reduced by half for dual-mode resonator.…”

Section: Four-port Dual-mode Diplexer Designmentioning

confidence: 99%

“…Normally, most common diplexer designs require high degree filters to achieve high Tx/Rx isolation, resulting in a very complicated filter design and fabrication process. An alternative technique to design a diplexer with low cost, high signal isolation and easy fabrication process was proposed by using a four-port network [12,13]. To achieve the realized prototype, the technique for size reduction and high isolation signal by using dual-mode resonator was presented in [14].…”

Section: Introductionmentioning

confidence: 99%

Dual-Mode Diplexer With High Isolation Based on Amplitude and Phase Cancellation Technique

Wattikornsirikul¹,

Kumngern²

2018

PIER M

View full text Add to dashboard Cite

This paper presents a dual-mode diplexer with easy fabrication and high signal isolation based on amplitude and phase cancellation technique. The dual-mode structure enables a compact and easy asymmetrical frequency response which also requires considerable attenuation between the proximity in frequency of the transmitter and that of the receiver. Two back-to back dual-mode threeport diplexers and a 180 • phase shifter are easily employed to construct the proposed device, which are combined to form a four-port dual-mode diplexer. A 180 • phase shift in one branch can be achieved by delayed transmission line. The simulated and measured four-port dual-mode diplexers are designed at the operational frequency of Tx/Rx at 1.95 GHz and 2.14 GHz, respectively. The measured results of Tx/Rx dual-mode diplexer devices are presented of 48.5 dB Tx/Rx isolation. This four-port dualmode diplexer achieves the isolation (S 32) more than 21.5 dB compared with a conventional three-port dual-mode diplexer.

show abstract

A Miniaturized Dual-Band Diplexer Design with High Port Isolation for UHF/SHF Applications Using a Neural Network Model

2023

View full text Add to dashboard Cite

In this paper, a compact dual-band diplexer is proposed using two interdigital filters. The proposed microstrip diplexer correctly works at 2.1 GHz and 5.1 GHz. In the proposed diplexer, two fifth-order bandpass interdigital filters are designed to pass the desired frequency bands. Applied interdigital filters with simple structures pass the 2.1 GHz and 5.1 GHz frequencies and suppress other frequency bands with high attenuation levels. The dimensions of the interdigital filter are obtained using the artificial neural network (ANN) model, constructed from the EM-simulation data. The desired filter and diplexer parameters, such as operating frequency, bandwidth, and insertion loss, can be obtained using the proposed ANN model. The insertion loss parameter of the proposed diplexer is 0.4 dB, and more than 40 dB output port isolation is obtained (for both operating frequencies). The main circuit has the small size of 28.5 mm × 23 mm (0.32 λg × 0.26 λg). The proposed diplexer, with the achieved desired parameters, is a good candidate for UHF/SHF applications.

show abstract

Four-port microstrip diplexer for RF interference rejection

Cited by 3 publications

References 7 publications

Four-Port Dual-Mode Diplexer with High Signal Isolation

Four-Port Dual-Mode Diplexer with High Signal Isolation

Dual-Mode Diplexer With High Isolation Based on Amplitude and Phase Cancellation Technique

A Miniaturized Dual-Band Diplexer Design with High Port Isolation for UHF/SHF Applications Using a Neural Network Model

Contact Info

Product

Resources

About