Abstract
In this letter, we propose a novel design of a UMTS diplexer using dual-mode rectangular ring-resonators. The diplexer is composed of two rectangular rings, which termed as the Tx- and Rx-ring, with each ring its input and output ports separated from each other by a quarter-wavelength to create the degenerate-mode resonance. The ratio of the long- and short-side dimension of rectangular ring can be used to fine tune the passband's bandwidth and the ratio is properly chosen to achieve sufficient bandwidth required by the UMTS diplexer applications. An enhanced parallel-coupled structure is introduced in the circuit to replace the conventional end-gap coupling for reducing the insertion losses in the passband. The effect of the coupling-line length is also simulated and the resulting data are used to precisely tune the positions of the zeros. In the zero assignment, one of the zeros possessed by each ring filter is managed to be implanted in the passband of its counterpart filter for increasing the isolation between the Rx-and Tx-port.
| Original language | English |
|---|---|
| Pages (from-to) | 63-65 |
| Number of pages | 3 |
| Journal | Microwave and Optical Technology Letters |
| Volume | 49 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2007 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Atomic and Molecular Physics, and Optics
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UMTS diplexer design using dual-mode ring resonators. / Ho, Min-Hua; Xu, Wei Qin; Chen, Yu Wei.
In: Microwave and Optical Technology Letters, Vol. 49, No. 1, 01.01.2007, p. 63-65.Research output: Contribution to journal › Article
TY - JOUR
T1 - UMTS diplexer design using dual-mode ring resonators
AU - Ho, Min-Hua
AU - Xu, Wei Qin
AU - Chen, Yu Wei
PY - 2007/1/1
Y1 - 2007/1/1
N2 - In this letter, we propose a novel design of a UMTS diplexer using dual-mode rectangular ring-resonators. The diplexer is composed of two rectangular rings, which termed as the Tx- and Rx-ring, with each ring its input and output ports separated from each other by a quarter-wavelength to create the degenerate-mode resonance. The ratio of the long- and short-side dimension of rectangular ring can be used to fine tune the passband's bandwidth and the ratio is properly chosen to achieve sufficient bandwidth required by the UMTS diplexer applications. An enhanced parallel-coupled structure is introduced in the circuit to replace the conventional end-gap coupling for reducing the insertion losses in the passband. The effect of the coupling-line length is also simulated and the resulting data are used to precisely tune the positions of the zeros. In the zero assignment, one of the zeros possessed by each ring filter is managed to be implanted in the passband of its counterpart filter for increasing the isolation between the Rx-and Tx-port.
AB - In this letter, we propose a novel design of a UMTS diplexer using dual-mode rectangular ring-resonators. The diplexer is composed of two rectangular rings, which termed as the Tx- and Rx-ring, with each ring its input and output ports separated from each other by a quarter-wavelength to create the degenerate-mode resonance. The ratio of the long- and short-side dimension of rectangular ring can be used to fine tune the passband's bandwidth and the ratio is properly chosen to achieve sufficient bandwidth required by the UMTS diplexer applications. An enhanced parallel-coupled structure is introduced in the circuit to replace the conventional end-gap coupling for reducing the insertion losses in the passband. The effect of the coupling-line length is also simulated and the resulting data are used to precisely tune the positions of the zeros. In the zero assignment, one of the zeros possessed by each ring filter is managed to be implanted in the passband of its counterpart filter for increasing the isolation between the Rx-and Tx-port.
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U2 - 10.1002/mop.22030
DO - 10.1002/mop.22030
M3 - Article
AN - SCOPUS:33845999614
VL - 49
SP - 63
EP - 65
JO - Microwave and Optical Technology Letters
JF - Microwave and Optical Technology Letters
SN - 0895-2477
IS - 1
ER -