A high performance 6 to 18 GHz MMIC converter chip for EW systems

Fudem, H.; Dietz, G.; Haubenstricker, R.; Hargis, R.; Moghe, S.

doi:10.1109/gaas.1990.175463

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…The circuit and mechanical structure of the LO unit determine the performance of the entire receiver because the LO signals not only determine the phase noise characteristics of the entire receiver path, but the leakage signals and spurious signals (external reference signals, multiplied signals, mixed signal, etc.) included in the LO signals also affect the performance of the entire system through the frequency mixer [11]. The comb generator structure with excellent phase noise characteristics and little difficulty in the implementation of the circuit was selected.…”

Section: Lo Sectionmentioning

confidence: 99%

“…First, the ultra-wideband input frequency range of 18-40 GHz were divided into two bands using 18-26 GHz (Band A) and 26-40 GHz (Band B) band pass filters and these were applied to the frequency mixer input. The designed frequency spectra were such that there was no secondary harmonic component in each band, thereby preventing spurious signals from appearing in the intermediate frequencies (IF,(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18).…”

Section: Introductionmentioning

confidence: 99%

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Front-End Module of 18–40 GHz Ultra-Wideband Receiver for Electronic Warfare System

Jeon¹,

Bang

2018

J Electromagn Eng Sci

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In this study, we propose an approach for the design and satisfy the requirements of the fabrication of a small, lightweight, reliable, and stable ultra-wideband receiver for millimeter-wave bands and the contents of the approach. In this paper, we designed and fabricated a stable receiver with having low noise figure, flat gain characteristics, and low noise characteristics, suitable for millimeter-wave bands. The method uses the chip-and-wire process for the assembly and operation of a bare MMIC device. In order to compensate for the mismatch between the components used in the receiver, an amplifier, mixer, multiplier, and filter suitable for wideband frequency characteristics were designed and applied to the receiver. To improve the low frequency and narrow bandwidth of existing products, mathematical modeling of the wideband receiver was performed and based on this spurious signals generated from complex local oscillation signals were designed so as not to affect the RF path. In the ultra-wideband receiver, the gain was between 22.2 dB and 28.5 dB at Band A (input frequency, 18-26 GHz) with a flatness of approximately 6.3 dB, while the gain was between 21.9 dB and 26.0 dB at Band B (input frequency, 26-40 GHz) with a flatness of approximately 4.1 dB. The measured value of the noise figure at Band A was 7.92 dB and the maximum value of noise figure, measured at Band B was 8.58 dB. The leakage signal of the local oscillator (LO) was-97.3 dBm and-90 dBm at the 33 GHz and 44 GHz path, respectively. Measurement was made at the 15 GHz IF output of band A (LO, 33 GHz) and the suppression characteristic obtained through the measurement was approximately 30 dBc.

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Section: Lo Sectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Front-End Module of 18–40 GHz Ultra-Wideband Receiver for Electronic Warfare System

Jeon¹,

Bang

2018

J Electromagn Eng Sci

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“…In addition, each component is connected using a microstrip line or a short RF cable for fabrication and testing. Additional tuning is also required to reduce mutual mismatching [2][3][4]. As previously discussed, the broadband switching matrix module connected to the rear end of the antenna in the electronic support equipment system is a key element determining the overall system performance.…”

Section: Introductionmentioning

confidence: 99%

Design of a 0.5–18 GHz Wideband Switching Matrix Box for Electronic Support Measurement

Jeon¹,

Koo²

2020

J Electromagn Eng Sci

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In this paper, we design and fabricate a broadband switching matrix box with low-noise figure, flat gain characteristics, and reliability by applying the chip-and-wire process using a bare-type MMIC device. To compensate for the mismatch among many components, the limiter, switch, amplifier, and power divider, which are suitable for sub-band frequency characteristics, are designed and applied to the matrix box. The matrix box has three submodules that are phase-matched for each frequency band and one built-in test (BIT) submodule to select the BIT path for calibration. Phase-matched RF semi-rigid cables of different lengths are used to connect to the external interface of the matrix box. The main RF line is a dielectric substrate, RT/Duroid 5880, with a relative dielectric constant of 2.2 and a dielectric thickness of 0.127 mm. The BIT path is a dielectric substrate, ceramic alumina (AI2O3), which has a relative dielectric constant of 9.8 and a dielectric thickness of 0.254 mm. In the wideband switching matrix box, the gain is from −1.71 dB to −2.69 dB at LB (input frequency, 0.5−2 GHz), with a flatness of 1.0 dB. Th e gain is from +14.8 dB to +12.4 dB at MB (input frequency, 1−6 GHz), with a flatness of 2.4 dB. The gain is from +12.6 dB to +9.4 dB at HB (input frequency, 6−18 GHz), with a flatness of 3.2 dB. The measured values of the noise figure are 2.69 dB at low band, 4.4 dB at medium band, and 5.95 dB at high band with a maximum value. The measured value of phase matching at high band is 7º with a maximum value.

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