A Resonant Printed Monopole Antenna With an Embedded Non-Foster Matching Network

Mirzaei, Hassan; Eleftheriades, George V.

doi:10.1109/tap.2013.2276912

Cited by 45 publications

(27 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The realized impedance bandwidth was 5.77 times larger than the passive directivity over quality factor, D/Q, upper bound. Similar impedance bandwidth enhancements have been reported for related implementations [12], [13]. IV.…”

Section: Non-foster Realizationsupporting

confidence: 85%

Electrically small metamaterial-inspired antennas with active near field resonant parasitic elements: From theory to practice

Tang

Ziolkowski

2017

2017 11th European Conference on Antennas and Propagation (EUCAP)

View full text Add to dashboard Cite

Abstract-By augmenting several classes of metamaterialinspired near-field resonant parasitic (NFRP) electrically small antennas (ESAs) with active (non-Foster) circuits, we have achieved performance characteristics surpassing their fundamental passive bounds. The designs not only have high radiation efficiencies, but they also exhibit large frequency bandwidths, large beam widths, large front-to-back ratios, and high directivities. Furthermore, the various initially theoretical and simulated designs have led to practical realizations. These active NFRP ESAs will be reviewed and recently reported designs will be introduced and discussed.

show abstract

Section: Non-foster Realizationsupporting

confidence: 85%

Electrically small metamaterial-inspired antennas with active near field resonant parasitic elements: From theory to practice

Tang

Ziolkowski

2017

2017 11th European Conference on Antennas and Propagation (EUCAP)

View full text Add to dashboard Cite

show abstract

“…Different NFCs, including CMOS based NFC [12], diode based NFC [13] and amplifier based NFC [14], have been matched to various types of antennas, including the monopole antenna [15], loop antenna [16], Egyptian axe dipole antenna [17], microstrip leaky-wave antenna [18], and parasitic array [19], with mostly favorable results. The results show that the NFCs can truly enlarge the bandwidth of the antennas and maintain a stability condition at the same time.…”

Section: Introductionmentioning

confidence: 99%

Gain and Noise Performance of Non-Foster Matching Circuit for VLF Receiver Loop Antenna

Yan¹,

Liu²,

Dong³

et al. 2018

PIER M

View full text Add to dashboard Cite

Abstract-Non-Foster matching circuits are those that can function as negative capacitors or inductors, and can thus overcome the gain-bandwidth limitation of passive matching circuits for antennas. This paper presents a non-Foster matching circuit (NFC) for a very low frequency (VLF) receiver loop antenna. The bandwidth of the antenna was improved by 383%, and the average gain was improved in most bands compared to a passive matching circuit (over 15-30 kHz). In contrast to circuits reported in other publications, the signal to noise ratio (SNR) of the passive matching network performed better than the non-Foster matching network. To analyze this phenomenon, a noise model was developed for the simplified balanced NFC, and noise analysis was conducted between the non-Foster and passive matching networks, which indicates that the non-Foster matching circuits cannot provide a better SNR performance than the passive matching circuits under low noise figure level receiver conditions.

show abstract

“…Earlier researchers mainly concentrated studies on the high frequency (HF) band [6][7][8][9][10]. Different NFCs, including CMOS based NFC [11], diode based NFC [12], and amplifier based NFC [13] have been matched to various types of antennas, including the monopole antenna [14], loop antenna [15], Egyptian axe dipole antenna [16], microstrip leaky-wave antenna [17], and parasitic array [18], with mostly favorable results. Also, negative non-Foster impedances are not absolutely stable circuits which could be a serious problem in practical application; the stability of negative impedances in several circuits was analyzed, including series C-C tank circuit, parallel C-C tank circuit, and series-parallel C-C tank circuit [14,19].…”

Section: Introductionmentioning

confidence: 99%

Non-Foster Matching Circuit Design via Tunable Inductor for VLF Receive Loop Antennas

Yan

Liu

et al. 2017

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

This paper presents a non-Foster matching circuit (NFC) for very low frequency (VLF) receive loop antennas. A 1 * 1 m VLF receive loop antenna was designed with a CMOS switch-based tunable inductor built into the NFC. The NFC can be applied to different VLF loop antennas by adjusting the number and inductance of the cells in the tunable inductor. A loop antenna was matched to the designed NFC with −10 dB 11 fractional bandwidth, marking a 383% improvement as well as enhanced transducer gain ( 21 ) compared to most bands in passive matching (over 15-30 kHz). The noise and received signal-to-noise ratio (SNR) of the matching network were assessed to find that, with a low noise floor level (4 dB) receiver, the SNR of the passive loaded antenna performs better than the non-Foster loaded antenna in VLF.

show abstract

A Resonant Printed Monopole Antenna With an Embedded Non-Foster Matching Network

Cited by 45 publications

References 24 publications

Electrically small metamaterial-inspired antennas with active near field resonant parasitic elements: From theory to practice

Electrically small metamaterial-inspired antennas with active near field resonant parasitic elements: From theory to practice

Gain and Noise Performance of Non-Foster Matching Circuit for VLF Receiver Loop Antenna

Non-Foster Matching Circuit Design via Tunable Inductor for VLF Receive Loop Antennas

Contact Info

Product

Resources

About