Power‐efficient full‐duplex K/Ka‐band phased array front‐end

Tabarani, Filipe; Boccia, Luigi; Calzona, Domenico; Amendola, Giandomenico; Schumacher, Hermann

doi:10.1049/iet-map.2019.0447

Cited by 16 publications

(4 citation statements)

References 29 publications

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“…A combined Rx/Tx aperture usually features switches for alternating Rx and Tx operation [4, 21, 22]. On the other hand, [23] presents a beamformer chip capable of full-duplex Rx/Tx with a noise figure of 3.2 dB. This, however, requires radiators with four inputs, two for Rx and two for Tx.…”

Section: Low-noise Frontend Assemblymentioning

confidence: 99%

A compact low-noise frontend for interleaved Rx/Tx arrays at K-/Ka-Band

Sieganschin¹,

Jaschke²,

Jacob³

2021

Int. J. Microw. Wireless Technol.

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This contribution deals with a frontend for interleaved receive (Rx)-/transmit (Tx)-integrated phased arrays at K-/Ka-band. The circuit is realized in printed circuit board technology and feeds dual-band Rx/Tx- and single-band Tx-antenna elements. The dual-band element feed is composed of a substrate-integrated waveguide (SIW) diplexer with low insertion loss, a low-noise amplifier (LNA), a bandpass filter, and several passive transitions. The compression properties of the LNA are identified through two-tone measurements. The results dictate the maximum allowable output power of the power amplifier. The single band feed consists of a SIW with several transitions. Simulation and measurement results of the individual components are presented. The frontend is assembled and measured. It exhibits an Rx noise figure of 2 dB, a Tx insertion loss of ~ 2.9 dB, and an Rx/Tx-isolation of 70 dB. The setup represents the unit cell of a full array and thus complies with the required half-wave spacing at both Rx and Tx.

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Section: Low-noise Frontend Assemblymentioning

confidence: 99%

A compact low-noise frontend for interleaved Rx/Tx arrays at K-/Ka-Band

Sieganschin¹,

Jaschke²,

Jacob³

2021

Int. J. Microw. Wireless Technol.

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“…The power amplifier (PA), a critical component in the satellite-based communication system, is primarily employed for amplifying and transmitting high-power RF signals. Furthermore, its performance and stability directly influence the overall effectiveness of the communication system [12][13][14][15][16]. Therefore, the design and implementation of PAs evince immense significance and practical value.…”

Section: Introductionmentioning

confidence: 99%

Catalyzing satellite communication: A 20W Ku-Band RF front-end power amplifier design and deployment

Chen,

Wang,

Zhang

et al. 2024

PLoS ONE

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This paper presents a groundbreaking Ku-band 20W RF front-end power amplifier (PA), designed to address numerous challenges encountered by satellite communication systems, including those pertaining to stability, linearity, cost, and size. The manuscript commences with an exhaustive discussion of system design and operational principles, emphasizing the intricacies of low-noise amplification, and incorporating key considerations such as noise factors, stability analysis, gain, and gain flatness. Subsequently, an in-depth study is conducted on various components of the RF chain, including the pre-amplification module, driver-amplification module, and final-stage amplification module. The holistic design extends to the inclusion of the display and control unit, featuring the power-control module, monitoring module, and overall layout design of the PA. It is meticulously tailored to meet the specific demands of satellite communication. Following this, a thorough exploration of electromagnetic simulation and measurement results ensues, providing validation for the precision and reliability of the proposed design. Finally, the feasibility of that design is substantiated through systematic system design, prototype production, and exhaustive experimental testing. It is noteworthy that, in the space-simulation environmental test, emphasis is placed on the excellent performance of the Star Ku-band PA within the 13.75GHz to 14.5GHz frequency range. Detailed power scan measurements reveal a P1dB of 43dBm, maintaining output power flatness < ± 0.5dBm across the entire frequency and temperature spectrum. Third-order intermodulation scan measurements indicate a third-order intermodulation of ≤ -23dBc. Detailed results of power monitoring demonstrate a range from +18dBm to +54dBm. Scans of spurious suppression and harmonic suppression, meanwhile, show that the PA evinces spurious suppression ≤ -65dBc and harmonic suppression ≤ -60dBc. Rigorous phase-scan measurements exhibit a phase-shift adjustment range of 0° to 360°, with a step of 5.625°, and a phase-shift accuracy of 0.5dB. Detailed data from gain-scan measurements show a gain-adjustment range of 0dB to 30dB, with a gain flatness of ± 0.5dB. Attenuation error is ≤ 1%. These test parameters perfectly align with the practical application requirements of the technical specifications. When compared to existing Ku-band PAs, our design reflects a deeper consideration of specific requirements in satellite communication, ensuring its outstanding performance and uniqueness. This PA features good stability, high linearity, low cost, and compact modularity, ensuring continuous and stable power output. These features position the proposed system as a leader within the market. Successful orbital deployment not only validates its operational stability; it also makes a significant contribution to the advancement of China’s satellite PA technology, generating positive socio-economic benefits.

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“…Compared with the lower frequency bands of C-and Ku-bands [5], [6], the use of higher frequency bands in LEO satellite communications has the advantages of system throughput, terminal size and mobility [7], [8]. For example, K-and Ka-bands (17.7-21.2 GHz and 27.5-31 GHz) have been adopted in LEO satellite communications to establish down-and up-links [9]- [12]. The antenna mounted on the mobile vehicular platform should have low-profile, low-cost and capability of beam-scanning [13]- [20].…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Combined-Aperture Variable Inclination Continuous Transverse Stub Antenna With Consistent Beam Direction

You

Wang

et al. 2022

IEEE Trans. Antennas Propagat.

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Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document.When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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Power‐efficient full‐duplex K/Ka‐band phased array front‐end

Cited by 16 publications

References 29 publications

A compact low-noise frontend for interleaved Rx/Tx arrays at K-/Ka-Band

A compact low-noise frontend for interleaved Rx/Tx arrays at K-/Ka-Band

Catalyzing satellite communication: A 20W Ku-Band RF front-end power amplifier design and deployment

Dual-Band Combined-Aperture Variable Inclination Continuous Transverse Stub Antenna With Consistent Beam Direction

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