Broadband High Power Low Insertion Loss Single Directional Crossguide Couplers

Broadband High Power Low Insertion Loss Single Directional Crossguide Couplers

Features:

Broadband
High Power
Low Insertion Loss

Applications:

Amplifiers
Transmitter
Laboratory Test
Radar

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Waveguide single directional crossguide coupler consists of two right angled waveguides.

Coupling is achieved by starting two small holes on the common wide wall of the waveguide. After optimization design, the signal power coupled through these two coupling holes can be reversed and cancelled out. These holes are usually made into a small cross hole to achieve optimal performance.

A directional coupler is a component that places two transmission lines in close proximity so that power on one line can be coupled to the other. The coupler is matched to the characteristic impedance at all four ports, making it easy to embed into other circuits or subsystems. By adopting different coupling structures, coupling media, and coupling mechanisms, directional couplers suitable for various microwave systems with different requirements can be designed.

Application:

Directional couplers, as an important component of many microwave circuits, are widely used in modern electronic systems. It can be used to provide sampling power for temperature compensation and amplitude control circuits, and can complete power allocation and synthesis over a wide frequency range.
1. In a balanced amplifier, it helps to achieve good input-output voltage standing wave ratio (VSWR).
2. In balanced mixers and microwave devices (such as network analyzers), it can be used to sample incident and reflected signals.
3. In mobile communication, the use of a 90 ° bridge coupler can determine the phase error of a π/4 phase shift keying (QPSK) transmitter.

Qualwave supplies broadband and high power single directional crossguide couplers in a wide range from 1.13 to 40GHz. There are various types of waveguide ports, such as WR-28 and WR-34. The couplers are widely used in many applications.
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Part Number	Frequency (GHz, Min.)	Frequency (GHz, Max.)	Power (MW)	Coupling (dB)	Insertion Loss (dB, max.)	Directivity (dB, min.)	VSWR (Max.)	Waveguide Size	Flange	Coupling Port	Lead Time (weeks)
QSDCC-26300-40000	26.3	40	0.036	30±1.5, 40±1.5	-	15	1.3	WR-28（BJ320）	FBP320, FBM320	2.92mm	2~4
QSDCC-21700-33000	21.7	33	0.053	40/50±1.5, 40/50±0.7	-	15	1.25	WR-34（BJ260）	FBP260	WR-34	2~4
QSDCC-17600-26700	17.6	26.7	0.066	30±0.75, 40±1.5	-	15	1.3	WR-42（BJ220）	FBP220	2.92mm	2~4
QSDCC-14500-22000	14.5	22	0.12	40±0.7, 50±0.7	-	18	1.1	WR-51 (BJ180)	FBP180	WR-51	2~4
QSDCC-9840-15000	9.84	15	0.29	30/40/50±0.5, 40±1.5, 50±0.5	-	18	1.3	WR-75 (BJ120)	FDBP120	WR-75, N, SMA	2~4
QSDCC-8200-12500	8.2	12.5	0.33	20/40±0.2, 50±1.5, 60±1	-	15	1.25	WR-90 (BJ100)	FBP100, FBM100	N, SMA	2~4
QSDCC-6570-9990	6.57	9.99	0.52	40±0.7, 50, 55±1	-	18	1.3	WR-112 (BJ84)	FDP84, FDM84, FBP84	WR-112, SMA	2~4
QSDCC-4640-7050	4.64	7.05	1.17	40±1.5	-	15	1.25	WR-159 (BJ58)	FDP58	N	2~4
QSDCC-3220-4900	3.22	4.9	2.44	30±1	-	26	1.3	WR-229 (BJ40)	FDP40, FDM40	SMA	2~4
QSDCC-1130-1730	1.13	1.73	19.6	50±1.5	-	15	1.3	WR-650 (BJ14)	FDP14	N	2~4