A Wideband Diplexer for Ka-Band Passive Intermodulation Measurement

Smacchia, Davide; Carceller, Carlos; Guglielmi, M.; Soto, Pablo; Boria, Vicente E.; Ruiz, Jesús Rubio; González, Pérez

doi:10.1109/mwsym.2018.8439191

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…7, with a reflection coefficient better than -33 dB from 17 to 21.5 GHz. In future works, a diplexer could be implemented to feed the horn through two standard waveguides in parallel [31], [32].…”

Section: A Pillbox Beamformermentioning

confidence: 99%

High-Gain Tapered Long Slot Array for Satcom Applications in PCB Technology With Folded Corporate Feed Network

Mahmoud,

Ettorre,

Sauleau

2024

IEEE Trans. Antennas Propagat.

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This paper presents an antenna covering the full frequency band from 17 GHz to 31 GHz for K/Ka-band satellite communication (Satcom) applications. A long slot array with 64 slots is designed for the radiating aperture. It is fed by a tapered corporate feed network (CFN) to reduce the sidelobe level (SLL) in the radiating plane orthogonal to the slots. A new technique to fold the CFN by a factor up to 65% is introduced without affecting the array performance. This technique can be applied to any CFN in a multi-layer system. Both parts are fabricated in printed circuit board (PCB) technology. A pillbox beamformer is used to illuminate the CFN. This beamformer consists of an Hplane horn located in the focal plane of an integrated parabolic reflector. The main beam of the antenna can be steered along the slot plane to provide a ±42 • coverage in elevation by changing the position of the horn in the focal plane. The pillbox beamformer is made of Aluminum to minimize losses and is fabricated by computer numerically controlled (CNC) milling. The total size of the antenna is 44.5×33.1×4.3λ 3 0 where λ0 is the wavelength at the maximum frequency of operation (31 GHz).

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Section: A Pillbox Beamformermentioning

confidence: 99%

High-Gain Tapered Long Slot Array for Satcom Applications in PCB Technology With Folded Corporate Feed Network

Mahmoud,

Ettorre,

Sauleau

2024

IEEE Trans. Antennas Propagat.

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“…The ever increasing demand for high-quality communication services has led to the increase in the development of higher bandwidth systems [1,2]. A diplexer-antenna subsystem is commonly used in applications with simultaneous transmit (Tx) and receive (Rx) channels.…”

Section: Introductionmentioning

confidence: 99%

Design of integrated wideband WR34‐band diplexer‐antenna array module for exploration of monolithic metal 3‐D printing for space applications

Vaitukaitis,

Rao,

Nai

et al. 2024

IET Microwaves Antenna & Prop

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The design of a wideband diplexer integrated with a 16‐slot Continuous Transverse Stub (CTS) antenna array is presented. The diplexer‐antenna array module covers the whole WR34 band. The Tx and Rx bands cover 21.7–26 and 27.5–33 GHz ranges, respectively. The diplexer is designed to have a 100 dB attenuation in the stopband and 40 dB isolation between the channels. The antenna array has a high gain, between 26.9 and 31 dBi, at the lowest and highest frequencies. For the preliminary exploration of monolithic metal 3‐D printing of complex geometry integrated RF front ends, two prototypes were manufactured in AlSi10 Mg. One‐piece fabrication eliminates complicated assembly, enhances reliability, and reduces weight, which is more desirable for space applications. Due to several factors, namely, an unpolished inner surface and imperfect printing quality, the diplexer had a poor measured performance. The measured results of the antenna array had a relatively better agreement with simulations. Although, the realised gain was affected by the much lower effective conductivity of the unpolished 3‐D printed material. Hence, the measured realised gain was between 27.8 and 30.9 dBi in the 29–33 GHz range.

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Practical Circuit-Based Design Approach for Waveguide Lowpass Filter With Extremely Steep Skirt Response

Lee,

Baek

et al. 2024

IEEE Access

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This paper presents a practical circuit-based design approach for a waveguide lowpass filter with a steep skirt response. For efficient filter design, the proposed structure employs a cascade of troughs with the same physical dimensions. Having identical troughs in most parts of a filter structure greatly alleviates the design difficulty. In addition, our filter design approach is largely based on circuit analysis rather than electromagnetic simulations, greatly expediting filter designs. A WR-75 waveguide lowpass filter example has been designed, fabricated, and measured for demonstration.

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A Wideband Diplexer for Ka-Band Passive Intermodulation Measurement

Cited by 4 publications

References 9 publications

High-Gain Tapered Long Slot Array for Satcom Applications in PCB Technology With Folded Corporate Feed Network

High-Gain Tapered Long Slot Array for Satcom Applications in PCB Technology With Folded Corporate Feed Network

Design of integrated wideband WR34‐band diplexer‐antenna array module for exploration of monolithic metal 3‐D printing for space applications

Practical Circuit-Based Design Approach for Waveguide Lowpass Filter With Extremely Steep Skirt Response

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