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RH6324- 1.5 to 30 MHz

ПРОГРАММНО-УПРАВЛЯЕМЫЕ ПОЛОСОВЫЕ ФИЛЬТРЫ RH6324- 1.5 to 30 MHz

The pre-postselector RH6324 is digitally tunable filter operating from 1.5 MHz to 30 MHz. RH6324 can be included either in receiving or transmitting tract by input/output commutation. This module consists of three (3) internal tunable bandpass filters (the frequency range divided between them in the following way: 1.5-4 MHz, 4-10 MHz and 10-30 MHz) and two internal amplifiers which compensate filter’s insertion losses (one of amplifiers works in receiving tract while another one works in the transmitting tract). RH6324 uses serial interface for tuning.	RH6324 Specification:
	Frequency Coverage (3 bands)		1.5 to 30 MHz
	Input/Output Impedance:		50 Ω
	In-band Input/Output VSWR		2:1
	In-band RF Power Handling		5 Watt (input)
	Out-band RF Power Handling		Up to 20 Watt
	In-band Second Order Intercept Point				+100 dBm (input)
	In-band Third Order Intercept Point			+40 dBm (input)
	Center Frequency Drift:		±80 PPM/ºC
	Tuning Control		Serial
	Tuning Speed		150 µS
	DC Power Consumption (Static)		5V @ 800mA 12V @ 300mA
	Shape Factor (30 dB/ 3 dB)		7 typical
	Operating TemperatureRange	-40°C to +85°C
	Size:	162x92x48 mm
	Weight:		420 g
	RF Connection		MCX

RH6324 filters’ specification

FrequencyRange	#	Bandwidth (3 dB), %	Insertion Loss, dB	Shape factor (30 dB)
FrequencyRange	#	Bandwidth (3 dB), %	Insertion Loss, dB	Overall	Low Side	High Side
1.5-4 MHz	5	4.6/5.5	5.0/5.9	5.8/6.1	6.8/7.3	4.8/4.9
	4	3.6/4.5	5.2/6.2	5.9/6.2	6.9/7.2	4.9/5.0
	3	2.5/3.5	5.6/6.5	5.8/6.2	6.8/7.1	4.8/5.0
	2	1.7/2.4	6.1/6.9	5.9/6.1	6.7/7.2	5.1/6.1
4-10 MHz	5	4.6/5.5	4.9/6.3	6.0/6.2	7.0/7.2	5.0/5.1
	4	3.6/4.5	5.3/6.7	5.9/6.2	7.1/7.6	4.8/5.0
	3	2.5/3.5	5.8/7.0	6.0/6.2	6.9/7.2	4.9/5.2
	2	1.7/2.4	6.2/7.3	6.1/6.2	6.9/7.0	5.3/5.4
10-30 MHz	5	4.6/5.5	4.3/5.2	6.1/6.3	7.0/7.4	5.1/5.2
	4	3.6/4.5	4.7/5.8	6.1/6.5	7.3/8.0	4.9/5.2
	3	2.5/3.5	5.1/6.2	5.9/6.0	6.6/6.7	5.2/5.4
	2	1.7/2.4	5.4/6.6	5.8/6.1	6.6/7.2	5.0/6.1

Note: table values are shown as average/maximum.

RH6324 block diagram

Frequency response functions and VSWR functions

Each frequency range has 251 tuning frequencies. Some frequency response functions and VSWR functions are shown below:

f₀: 1.5 MHz;

Bandwidth: 2.87%;

VSWR: 1.17;

OIL: –5.28 dB;

OIL–10%: –29.52 dB;

OIL+10%: –30.43 dB.

f₀: 4 MHz;

Bandwidth: 2.73%;

VSWR: 1.30;

OIL: –4.38 dB;

OIL–10%: –30.17 dB;

OIL+10%: –32.45dB.

f₀: 8 MHz;

Bandwidth: 2.72%;

VSWR: 1.24;

OIL: –4.39 dB;

OIL–10%: –29.29 dB;

OIL+10%: –31.03dB.

f₀: 12 MHz;

Bandwidth: 2.46%;

VSWR: 1.31;

OIL: –3.97 dB;

OIL–10%: –33.38 dB;

OIL+10%: –34.14dB.

f₀: 20 MHz;

Bandwidth: 2.61%;

VSWR: 1.08;

OIL: –4.49 dB;

OIL–10%: –30.75 dB;

OIL+10%: –32.09dB.

f₀: 30 MHz;

Bandwidth: 2.69%;

VSWR: 1.13;

OIL: –5.71 dB;

OIL–10%: –29.78 dB;

OIL+10%: –32.18 dB.

Note: f₀ — tuning frequency;VSWR — VSWR at f₀ frequency;OIL — insertion loss at f₀;
OIL–10% — insertion loss at 0,9f₀;OIL+10% — insertion loss at 1,1f₀.

1.5-4 MHz filter performance

The following diagrams show value of Insertion Loss at f₀, Insertion Loss at 0.9f₀, Insertion Loss at 1.1f₀ and VSWR at each tuning frequency for 1.5-4 MHz filter.

$D:\PS_Tuning\PS30\PPS\D1_OIL.bmp$

Insertion Loss at f₀

$D:\PS_Tuning\PS30\PPS\D1_VSWR.bmp$

VSWR

$D:\PS_Tuning\PS30\PPS\D1_OIL+10.bmp$

Insertion Loss at 1.1f₀

$D:\PS_Tuning\PS30\PPS\D1_OIL-10.bmp$

Insertion Loss at 0.9f₀

4-10 MHz filter performance

The following diagrams show value of Insertion Loss at f₀, Insertion Loss at 0.9f₀, Insertion Loss at 1.1f₀ and VSWR at each tuning frequency for 4-10 MHz filter.

$D:\PS_Tuning\PS30\PPS\D2_OIL.bmp$

Insertion Loss at f₀

$D:\PS_Tuning\PS30\PPS\D2_VSWR.bmp$

VSWR

$D:\PS_Tuning\PS30\PPS\D2_OIL+10.bmp$

Insertion Loss at 1.1f₀

$D:\PS_Tuning\PS30\PPS\D2_OIL-10.bmp$

Insertion Loss at 0.9f₀

10-30 MHz filter performance

The following diagrams show value of Insertion Loss at f₀, Insertion Loss at 0.9f₀, Insertion Loss at 1.1f₀ and VSWR at each tuning frequency for 10-30 MHz filter.

$D:\PS_Tuning\PS30\PPS\D3_OIL.bmp$

Insertion Loss at f₀

$D:\PS_Tuning\PS30\PPS\D3_VSWR.bmp$

VSWR

$D:\PS_Tuning\PS30\PPS\D3_OIL+10.bmp$

Insertion Loss at 1.1f₀

$D:\PS_Tuning\PS30\PPS\D3_OIL-10.bmp$

Insertion Loss at 0.9f₀

Pinout& Ratings

PIN #	Reference designator	Description	Notes
1-5, 10	N/C	No Connect	—
6	PTT	SWRX/TX	Rx mode: 5V; Tx mode: 0V
7, 9, 11	GND	Digital/RF Ground	—
8	VCC	+5V Power Supply Input	4.75 to 5.25V @ 800mA
12	VDD	+12V Power Supply Input	11.5 to 12.5V @ 300mA
13	STB	Strobe	Active: 0V; Inactive: +5V
14	CLK	Serial Clock	Active: 5V; Inactive: 0V
15	DI	Serial Data Input	Active: 5V; Inactive: 0V

Serial interface description

Serial interface consists of 3 signals: CLK (clock), DI (data input), STB (strobe). Data input is 11 bits code. First 8 bits determine the tuning frequency and the last 3 bits determine the frequency band.

Frequencybandcode

Frequency band	D9	D10	D11
1,5–4 MHz	1	0	0
4–10 MHz	0	1	0
10–30 MHz	0	0	1

Tuning frequencycode

Tuning frequency code is calculated by X₁₀ conversion into binary code. X₁₀ is calculated by the formula:

f₀ — tuning frequency; f_l — low frequency of the band; f_h — high frequency of the band.

Example

If you wish to tune to 8.02 MHz, the tune word is:

Mechanical Outline

Note:sizes are shown in millimeters.

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