Abstract
This letter presents a balanced band-notched ultra-wideband (UWB) filtering circular patch antenna fed by a microstrip line. The proposed circuit is composed of a λ/4 slotline-resonator-based balanced band-notched UWB bandpass filter (BPF) and a stub-loaded circular radiating patch. The compact balanced BPF is new in that the slotline resonator is fed judiciously at its open end so that differential-mode fields can be effectively excited in the slotline resonator. Moreover, it can achieve an all-stop-like common-mode rejection because the slotline resonator is incomplete in structure when in common-mode operation. The way the BPF is coupled to the circular radiating patch is novel in that a good impedance match can be easily obtained with the aid of two tuning open stubs. A pair of spur-lines was implemented in the microstrip feedline near the plane of symmetry to produce a notch band around 5.5 GHz. Measurement shows that the differential-mode operating band with return loss greater than 10 dB covers 2.95-10.75 GHz except for the notch band of 5.01-6.19 GHz. Very good common-mode suppression is observed with the measured common-mode reflection coefficient greater than -1.78 dB in 1-12 GHz.
| Original language | English |
|---|---|
| Article number | 8024056 |
| Pages (from-to) | 2812-2815 |
| Number of pages | 4 |
| Journal | IEEE Antennas and Wireless Propagation Letters |
| Volume | 16 |
| DOIs | |
| Publication status | Published - 2017 Aug 31 |
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
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Balanced Band-Notched UWB Filtering Circular Patch Antenna with Common-Mode Suppression. / Lee, Ching-Her; Wu, Jhe Han; Hsu, Chung I.G.; Chan, Hsiao Lan; Chen, Hsun-Hsiang.
In: IEEE Antennas and Wireless Propagation Letters, Vol. 16, 8024056, 31.08.2017, p. 2812-2815.Research output: Contribution to journal › Article
TY - JOUR
T1 - Balanced Band-Notched UWB Filtering Circular Patch Antenna with Common-Mode Suppression
AU - Lee, Ching-Her
AU - Wu, Jhe Han
AU - Hsu, Chung I.G.
AU - Chan, Hsiao Lan
AU - Chen, Hsun-Hsiang
PY - 2017/8/31
Y1 - 2017/8/31
N2 - This letter presents a balanced band-notched ultra-wideband (UWB) filtering circular patch antenna fed by a microstrip line. The proposed circuit is composed of a λ/4 slotline-resonator-based balanced band-notched UWB bandpass filter (BPF) and a stub-loaded circular radiating patch. The compact balanced BPF is new in that the slotline resonator is fed judiciously at its open end so that differential-mode fields can be effectively excited in the slotline resonator. Moreover, it can achieve an all-stop-like common-mode rejection because the slotline resonator is incomplete in structure when in common-mode operation. The way the BPF is coupled to the circular radiating patch is novel in that a good impedance match can be easily obtained with the aid of two tuning open stubs. A pair of spur-lines was implemented in the microstrip feedline near the plane of symmetry to produce a notch band around 5.5 GHz. Measurement shows that the differential-mode operating band with return loss greater than 10 dB covers 2.95-10.75 GHz except for the notch band of 5.01-6.19 GHz. Very good common-mode suppression is observed with the measured common-mode reflection coefficient greater than -1.78 dB in 1-12 GHz.
AB - This letter presents a balanced band-notched ultra-wideband (UWB) filtering circular patch antenna fed by a microstrip line. The proposed circuit is composed of a λ/4 slotline-resonator-based balanced band-notched UWB bandpass filter (BPF) and a stub-loaded circular radiating patch. The compact balanced BPF is new in that the slotline resonator is fed judiciously at its open end so that differential-mode fields can be effectively excited in the slotline resonator. Moreover, it can achieve an all-stop-like common-mode rejection because the slotline resonator is incomplete in structure when in common-mode operation. The way the BPF is coupled to the circular radiating patch is novel in that a good impedance match can be easily obtained with the aid of two tuning open stubs. A pair of spur-lines was implemented in the microstrip feedline near the plane of symmetry to produce a notch band around 5.5 GHz. Measurement shows that the differential-mode operating band with return loss greater than 10 dB covers 2.95-10.75 GHz except for the notch band of 5.01-6.19 GHz. Very good common-mode suppression is observed with the measured common-mode reflection coefficient greater than -1.78 dB in 1-12 GHz.
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U2 - 10.1109/LAWP.2017.2748279
DO - 10.1109/LAWP.2017.2748279
M3 - Article
AN - SCOPUS:85029143390
VL - 16
SP - 2812
EP - 2815
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
SN - 1536-1225
M1 - 8024056
ER -