30 GHz Band Low Noise Receiver for 30/20 GHz Single-Conversion Transponder

Mizuno, Hideyuki; Kato, H.

doi:10.1109/jsac.1983.1145967

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…Various transponder configurations have been adopted, such as single-conversion transponder [1], double-conversion transponder and transponder with downconverter, onboard process and upconverter [2]. The single-conversion transponder has the advantages of smaller size and less weight [3], which directly converts the received RF signal down to the IF signal and transmits it to the earth stations.…”

Section: Introductionmentioning

confidence: 99%

“…The spurious rejection and IMD3 mostly depend on the performance of the mixer. In order to improve isolation and suppress these spurious signals, the balanced drain mixer [4], balanced MMIC Schottky barrier diode mixer [3,5,6], resistive source-degenerated mixer [7], antiparallel diode pair harmonic mixer [1] and balanced resistive PHEMT mixer [8] have been proposed for the designs of the mixers. Schottky barrier diode is famous for its low noise and high cut-off frequency, and thus the diode pair or quad is often adopted for compact balanced MMIC mixer design utilizing broadband baluns such as Lange couplers, spiral baluns [3,5], Marchand baluns and some others [9].…”

Section: Introductionmentioning

confidence: 99%

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Design of a Microstrip Balanced Mixer for Satellite Communication

Guo¹,

Xu²,

Qian³

et al. 2011

PIER

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Abstract-The design and measured results of a compact, low cost, low conversion loss microstrip single balanced Schottky diodes mixer is proposed. This mixer is designed for Ka-band satellite transponder simulator to convert the 30 GHz radio-frequency (RF) signal down to the 20 GHz intermediate-frequency (IF) signal with 9.8 GHz local oscillator (LO) frequency. This design takes full advantage of the frequency relationship of the RF, IF and LO, which is 3 : 2 : 1. A microstrip rat-race ring is designed at the LO frequency, which also functions as a 180-degree hybrid coupler at the RF frequency by its intrinsic multi-band characteristic. The amplitude and phase balance at both LO and RF frequency are analyzed, which guarantee the stateof-art performance of this single balanced mixer. The multi-function open/short stubs and a lowpass filter (LPF) with bonding wires across the rat-race ring are optimized to realize this low conversion loss mixer. The measured results show that the conversion loss is less than 9 dB at the IF frequency from 20.0 to 21.6 GHz, and the power of the second harmonic of LO is −45 dBm with +6.5 dBm LO drive power. The 3rd order inter-modulation products (IMD3) could be lower than −50 dBc with LO power higher than +7.8 dBm at the input RF power of −15 dBm.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of a Microstrip Balanced Mixer for Satellite Communication

Guo¹,

Xu²,

Qian³

et al. 2011

PIER

View full text Add to dashboard Cite

show abstract

“…When the frequencies are in such a relation, the harmonics of the LO signal (frequency mf p , where m is an integer), and the higher-order modulation components between the input and the LO signals (frequency |n×f in m×f p |, where n is an integer) are produced as spurious components near the output signal [3,4]. Since the spurious components represent interference to other communications, it is desired to suppress their level.…”

Section: Introductionmentioning

confidence: 99%