Name: Waveguide Filter
Brand: DOLPH MICROWAVE
Price: 1 USD

11 model rowsPassband and rejection data

WR229–WR12Listed sizes; discrete models

Aluminum / copperCatalogue material options

View specifications Drawings & documents Download datasheet PDF

Filter construction and options

Filter functions

Listed examples: bandpass, lowpass and transmit-reject. The ordering key also includes highpass and receive-reject.

Interfaces and finish

Cover/grooved flanges, aluminum or copper, Iridite per MIL-C-5541 internal finish and anticorrosion black-painted body finish.

Configuration

Standard and requested configurations are described for satellite, radar, wireless, research and telecommunications systems. Specify rejection in dB at each required frequency.

Waveguide Filter original specification sheet — Original specification sheet · Open full size

Standards and approval references

Specified surface-treatment standard

The original catalogue specifies Iridite per MIL-C-5541 for the inside finish. This is a finish specification; the four original finish rows are preserved in the table.

Download the original specification PDF

Specifications and configuration details

Filter model data

Model	Waveguide Size	Pass Freq. (Ghz)	Reject Freq. (Ghz)	VSWR Max.	IL (dB)
DH-40WBPF3.4T3.425PMA……	WR229	3.4-3.425		1.42	2
DH-40WTRF3.4T4.2PMA……	WR229	3.4-4.2	5.725-6.725	1.5	0.4
DH-40WBPF3.4T4.2PMA……	WR229	3.4-4.2		1.4	0.5
DH-40WBPF3.4T4.2PMA……	WR229	3.4-4.2		1.4	0.45
DH-40WBPF3.4T4.2PMA……	WR229	3.4-4.2		1.4	0.45
DH-40WBPF3.6T4.2PMA……	WR229	3.6-4.2		1.4	0.5
DH-220WLPF22.7T22.9PMA…	WR42	22.7-22.9		1.2	0.35
DH-260WLPF26T28.35PMA…	WR34	26.0-28.35		1.15	0.25
DH-320WBP33.0T37.0PMA…	WR28	33.0-37.0		1.42	0.9
DH-500WBPF42.6T44.6PMC…	WR19	42.6-44.6		2	1
DH-740WBPF72T74PMC…	WR12	72.0-74.0		2	1

Abbreviated model strings, repeated rows and empty cells are retained from the catalogue. Confirm the full part number; do not infer a value for a blank cell.

Rejection, function and length

Rejection (dB)	Filter Type	Length (mm)
50@3.4395 50@3.3855	Bandpass	200
70@5.72, 6.72	Transmit Reject	165
24@3.35 24@4.25 75@3.25 75@4.35-14.0	Bandpass	210
60@3.35 50@4.25	Bandpass	120
61@3.6 60@3.6-3.7 55@4.45-4.8	Bandpass	120
25@3.57, 4.25 60@3.525, 4.3 70@3.45, 4.35	Bandpass	200
40@18.0-21.2 30@45.4-45.8 30@68.1-68.7	Lowpass	50
45@30-31 30@45.4-45.8 30@68.1-68.7	Lowpass	50
60@32.5 60@37.5 66@50.0	Bandpass	80
20@41-46 40@40.5-46.5	Bandpass	60
40@76.5	Bandpass	60

Keep every rejection value with its printed frequency condition. The source rows are presented separately without merging model records.

Published finish entries

Flange Type	Inside Finish	Body Finish	Material
Cover/Grooved	Iridite per MIL-C-5541	Anticorrosion Black Painted	Al/Cu
Cover/Grooved	Iridite per MIL-C-5541	Anticorrosion Black Painted	Al/Cu
Cover/Grooved	Iridite per MIL-C-5541	Anticorrosion Black Painted	Al/Cu
Cover/Grooved	Iridite per MIL-C-5541	Anticorrosion Black Painted	Al/Cu

The source contains four repeated finish rows and eleven electrical rows. No extra row-to-model relationship has been inferred.

Ordering information: DH – 120 WBPF 10.8T11.5 P M A

Code	Published meaning
DH	Dolph Microwave
120	WR75
WBPF	Bandpass
WLPF	Lowpass
WHPF	Highpass
WTRF	Transmit Reject
WRRF	Receive Reject
10.8T11.5	Pass Band Freq. Range 10.8-11.5 GHz
P	Flange Cover
M	Flange Grooved
A	Material Al

Product-family reference from the original page

The entries below are retained as published. Where they differ from the model-specific catalogue, confirm the selected configuration using the notes above.