Compact multi-level folded coupled line RF couplers

Settaluri, R.K.; Weisshaar, A.; Lim, Chan Hian; Tripathi, V.K.

doi:10.1109/mwsym.1999.780303

Cited by 8 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The three other combinations were also designed by changing the length of the C-section. In the second combination, length l 11 is changed to l 12 by subtracting an amount of length ∆l 1 and by keeping the length l 21 as such. Similarly in the third combination, the length l 21 is changed to l 22 by adding an amount of length ∆l 2 by keeping the length l 11 as such.…”

Section: Prototype Resultsmentioning

confidence: 99%

“…Similarly in the third combination, the length l 21 is changed to l 22 by adding an amount of length ∆l 2 by keeping the length l 11 as such. Finally both the lengths l 11 and l 21 have been changed to l 12 and l 22 and corresponding delay obtained has been assigned as the code 11.…”

Section: Prototype Resultsmentioning

confidence: 99%

“…However, more number of groups can be incorporated by increasing the coupling within each group so that the group delay peaks will be narrower resulting in a wide range of weak delay zone. This can be achieved by again increasing the number of C-sections in each group or by using multi-layer C-sections as explained in [21]. Thus, it permits the information encoding at several frequencies.…”

Section: Criteria For Cascading the C-sectionsmentioning

confidence: 99%

See 2 more Smart Citations

A Temporal Multi-Frequency Encoding Technique for Chipless Rfid Based on C-Sections

Nair¹,

Perret²,

Tedjini³

2013

PIER B

View full text Add to dashboard Cite

Abstract-A time domain chipless RFID tag based on cascaded microstrip coupled transmission line sections (C-sections), which can operate in multi-frequency bands is presented. The group delay characteristics of the C-sections are exploited to generate the tag Identification (ID). The tag comprises cascaded commensurate group of C-sections and two cross-polarized ultra wide-band (UWB) antennas. Since the proposed tag can operate in multi-frequency bands, this paper proves the possibility of increasing the coding capacity compared to the existing time domain designs. A tag operating at ISM (Industrial Scientific and Medical) bands at 2.45 GHz and 5.8 GHz together with conformance of frequency and power regulations is discussed elaborately. The prototype of the device is fabricated and validated experimentally. The time domain characteristic of the tag is also validated experimentally by interrogating a short pulse. Furthermore, measurement results using commercial Ultra Wide Band (UWB) radar which can be used as a chipless RFID reader is also incorporated. The obtained results confirm the concept and the possibility of using temporal multi-frequency in chipless RFID.

show abstract

Section: Prototype Resultsmentioning

confidence: 99%

Section: Prototype Resultsmentioning

confidence: 99%

Section: Criteria For Cascading the C-sectionsmentioning

confidence: 99%

See 1 more Smart Citation

A Temporal Multi-Frequency Encoding Technique for Chipless Rfid Based on C-Sections

Nair¹,

Perret²,

Tedjini³

2013

PIER B

View full text Add to dashboard Cite

show abstract

“…Line folding is very straightforward and consists of folding the transmission lines in meander-like patterns. It is very effective when TFMS lines are used [5]. The second approach for circuit size reduction is to replace transmission lines with lumped elements [6].…”

Section: Size Reduction Techniquementioning

confidence: 99%

A New Miniaturized Type of Three-Dimensional SiGe 90° Hybrid Coupler at 20 GHz using The Meandering TFMS and Stripline Shunt Stub Loading

Hettak

Morin²,

Stubbs

2007

2007 IEEE/MTT-S International Microwave Symposium

View full text Add to dashboard Cite

This paper proposes a new scheme for realizing a compact 3-D 900 hybrid coupler based on the compact meandered thin-film microstrip (TFMS) transmission line and stripline shunt stub loading, and successfully demonstrated by using the multi-layer 0.35 pm SiGe HBT Jazz process. The proposed coupler takes advantage of the multi-level metallization processes offered in SiGe technology. The intrinsic area of the fabricated 3-D hybrid coupler is significantly reduced and has shown a size reduction of 92% in circuit area at 20 GHz compared to that of a conventional hybrid coupler using the TFMS configuration. Experimental results are presented in support of the novel miniature coupler.

show abstract