Duplexer-less LNA/PA design for wireless transceivers with bondwire-antenna

Ahmed, A.; Wight, J.S.

doi:10.1109/dtis.2009.4938025

Cited by 5 publications

(13 citation statements)

References 19 publications

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“…Although these solutions are very accurate, they do not provide as easyto-hand-calculate analytic solution for a semicircular loop without a ground-plane underneath it. In [1], approximations were used to calculate hand-derived equations for the exact near and far-field patterns in spherical coordinates. The HFSS simulation model and result shown in Figure 1 shows the hand-calculated radiation pattern plotted using Mathematica in [1] is valid.…”

Section: Bondwire Antenna Design and Correctionmentioning

confidence: 99%

“…In [1], approximations were used to calculate hand-derived equations for the exact near and far-field patterns in spherical coordinates. The HFSS simulation model and result shown in Figure 1 shows the hand-calculated radiation pattern plotted using Mathematica in [1] is valid. However, the calculated radiation efficiency of 20.24% reported in [1] and value of the gain obtained from the HFSS simulation shown in Figure 1 are nonrealistic, because this hand-calculation is done with an impractical model because an antenna cannot exist without the presence of a ground-plane or a substrate.…”

Section: Bondwire Antenna Design and Correctionmentioning

confidence: 99%

“…This work consists of a duplexer-less LNA/PA design incorporated with a bondwire antenna as described in [1]. The novelty here is not the design or usage of the bondwire as an antenna, but that bondwire-antenna used as both an LC-tank-load and antenna for the PA and is also used as an input-matching element and antenna for the LNA.…”

Section: Background and Introductionmentioning

confidence: 99%

“…Both the output of the LNA and the input of the PA are matched with an active inductor (AI) as described in [2,3]. The same background used in [1] is applicable here, so there is no need for repetition. It is sufficient to say that bondwires have been used as antennas as discussed in [4][5][6][7][8], but in applications above 30 GHz, where these antennas have a higher gain and efficiency.…”

Section: Background and Introductionmentioning

confidence: 99%

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Active‐inductor‐matched 6‐GHZ duplexer‐less LNA/PA design incorporated with a bondwire‐antenna

Ahmed

2011

Micro & Optical Tech Letters

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This article presents a correction to a previously published duplexer‐less LNA/PA circuit incorporating a bondwire antenna showing the comparison between the calculated, simulated, and measured results of the gain, radiated power, radiation pattern, and the transmitter to receiver link‐budget for a bondwire‐antenna for short‐range radio communications in the 6‐GHz frequency range.The correction is given in the radiation efficiency and power transmitted by the PA. The LNA and PA were matched to the 50‐Ω ports of the measuring instruments via an active inductor. Besides the inductive bondwire antenna, the LNA and PA are designed to be completely inductor‐less, thus, saving the silicon chip area. The transceiver range is calculated to be about 4.72 m, ideal for applications such as remote controls, biomedical monitoring equipment, or RFID tags. Both front end blocks are designed with low‐power, low cost, and high yield considerations for production in industry. The inductorless LNA parameters at 6 GHz are S21 of 14 dB for both the LNA and PA, a deduced NF of 4.9 dB for the LNA, S11 and S22 less than −10 dB, with 10‐mW TX, and 15‐mW RX power consumption for a 1.2 V supply. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:761–766, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25823

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Section: Bondwire Antenna Design and Correctionmentioning

confidence: 99%

Section: Bondwire Antenna Design and Correctionmentioning

confidence: 99%

Section: Background and Introductionmentioning

confidence: 99%

Section: Background and Introductionmentioning

confidence: 99%

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Active‐inductor‐matched 6‐GHZ duplexer‐less LNA/PA design incorporated with a bondwire‐antenna

Ahmed

2011

Micro & Optical Tech Letters

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“…However, this approach occupies large valuable silicon area and the resulted antenna efficiency is extremely low. Application of bondwire as antenna was reported in [2], [3], but the lack of an accurate antenna model has made the design interface between the circuit and the antenna challenging. To alleviate the modeling difficulty, λ/2 antennae are often employed in the design.…”

Section: Introductionmentioning

confidence: 99%

Co-simulation of RFIC with bondwire antenna via retarded PEEC method

Zhang

Fong

et al. 2012

2012 IEEE International Symposium on Circuits and Systems

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We present an antenna modeling method based on partial element equivalent circuit (PEEC) theory. The antenna is modeled as an equivalent circuit of lumped circuit elements, which enables circuit co-simulation between the antenna and circuits in both time and frequency domains. Antenna radiation is captured as an equivalent radiation resistor. For verification, a 2.4-GHz transmitter with bondwire antenna was implemented in a standard digital 0.35µm CMOS technology. Measurement shows good agreement with the proposed model. This model can be applied to any other on-chip electromagnetic structures.

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Modelling the shape, length and radiation characteristics of bond wire antennas

Ndip

Öz

Tschoban

et al. 2012

IET Microw. Antennas Propag.

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Novel analytical models for accurately modelling the shape and length of bond wires in dependence on the loop height (Lh(max)), distance between the bonding positions (d(bp)) and the thickness of the metallisation (t(met.)) on which the wires are bonded, are derived in this work. These analytical models, which are based on the Gaussian distribution function, are applied to (i) develop realistic three-dimensional electromagnetic models of bond wire antennas and study their radiation characteristics and (ii) study the impact of process tolerances of bond wire parameters on the performance of the antennas. For these studies, a 42 GHz half-loop bond wire antenna is considered as an example. It is designed, fabricated and measured. Our results reveal that dbp has the most significant impact on the antenna performance. For example, -10% fluctuations in dbp causes similar to 2.5 GHz shift in the resonance frequency and 24% reduction in the maximum realised gain. Since this may completely detune the antenna, it is recommended that fluctuations in d(bp) should be kept below 10% during the manufacturing process. Good correlation is obtained between measurement and simulation results

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Duplexer-less LNA/PA design for wireless transceivers with bondwire-antenna

Cited by 5 publications

References 19 publications

Active‐inductor‐matched 6‐GHZ duplexer‐less LNA/PA design incorporated with a bondwire‐antenna

Active‐inductor‐matched 6‐GHZ duplexer‐less LNA/PA design incorporated with a bondwire‐antenna

Co-simulation of RFIC with bondwire antenna via retarded PEEC method

Modelling the shape, length and radiation characteristics of bond wire antennas

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